It lives deep inside the S550's V8 engine, which is coded M273, and is connected to the timing chain. Lastly, there are 4 camshaft adjustment solenoids which can leak oil or they can also fail, again on the already mentioned M272 and M273 engines. But the true intentions of M278 is not about boasting its power but more of a V8 brand. It has a non-return high-pressure supply with two separate fuel rails. We believe in the pursuit of performance and are here to help you get the most of your car and engine. E 250 BlueEFFICIENCY: Similar to above but tuned to higher power levels. If you run into this problem out of warranty then Mercedes may be willing to work with you and help with the repair bill. Spark plugs and ignition coils are standard maintenance on almost any engine including the M276. By far the biggest issue with early versions of the M278 were the timing chain and tensioners. Those same engines ran into excess carbon build-up as early as 40,000 to 60,000 miles. This effectively stops the oil from seeping in and causing issues. All prior 6-cylinder engines from Mercedes were straight sixes. Rating . While the 4.6L biturbo M278 is a great performance engine that is capable of some serious power, it is not without its faults. With traditional port injection (PI) fuel is sprayed into the intake ports. Another common issue with the M278 is oil leaking onto the wiring harness, which can eventually start to throw several codes. E 250 BlueEFFICIENCY: Similar to above but tuned to higher power levels. The 2010-2011 S550 is a great choice if you want an upgraded look. Alternatively with which engine could I replace this engine with? It has sodium filled exhaust valves for optimal heat reduction, and also uses a direct injection system like the M278. The Mercedes-Benz M276 engine family has a lot to offer. A couple of his favorites were his heavily modded 2016 Subaru WRX and his current 2020 VW Golf GTI. Here are some of the coolest concepts that have fallen through the cracks. The Mercedes-Benz M278, M157 and M152 were 90-degree V8 petrol engines that were introduced in 2010 to replace the M273 and M156 engines. Drivers have given the M278 rave reviews in nearly all of the models that feature it. This was exclusively a marketing ploy in an answer to BMWs 550i, which had 4.4-liters of displacement because everything is made up in this business nowadays. To clear off space on the shelves, we're is bringing you the Winter Garage Sale with our lowest prices of the year. The Mercedes-Benz M273 engine is a V8 automobile piston engine family used in the 2000s (decade). The M278 improved upon the outgoing M273 in a variety of ways. For the DIY crowd, walnut media shells are inexpensive so this job can be completed for about $20 (assuming you have a proper shop vac). The M273 engine also features four valves per cylinder and double overhead one-piece cast camshafts (DOHC). 35% Off Spare Parts. *Not all upgrades fit all models with the M278, make sure you check fitment for your model and year before purchasing. Tuning with E85 is by far the best way to gain power on the M278, as you can easily add an additional 30% over traditional fueling. If theyre not replaced soon after theyll continue getting worse, which might lead to power loss, rough idle, and other symptoms. Some were available with all-wheel-drive. Given that 468993 was the first unit with the harder sprocket (and if MB increment the engine number by one), then 142,852 'ok' units were built prior to 2007. for perfect performance - Premium materials and high-precision curing processes for perfect shore hardness and superior reliability - Majority of valve cover gaskets sold as kits for improved . Required fields are marked *. This helps efficiency despite its larger design. There was also a wagon version (S212), coupe (C207), and cabriolet (A207). Performance models made between 429-449hp and 465tq, and peak torque was achieved at just 1,800 RPM. Another popular upgrade for M278 equipped cars is the intake. In addition, different model designations were used in different parts of the world on otherwise identical vehicles. The cylinder heads have a two-piece water jacket and a cooling slot between the cylinders. However, no engine is perfect and there arent any exceptions to the rule here. Get it as soon . The connecting rods, crankshaft, and valves are all forged, while the hyper-eutectic pistons, crankcase, and cylinder heads are all cast aluminum. High-flow panel inserts can be used in conjunction with intakes for the best flow (short of getting a full intake kit). Go read that article to learn more. The M273 was a naturally aspirated 5.5L V8 that produced 382hp and 391tq in its final iteration. JavaScript is disabled. Price: Buy It Now $10,900. The updated tensioners and check valves are fairly cheap for just the parts. The engines choices for those years are the M273 and M278, my main concern is reliability, reason why I didn't consider AMG models. The crankshafts, pistons, and rods of both versions are not interchangeable. Its available as a 4.3, 5.0, 5.4, and 5.4L supercharged engine. The intake manifold is made of an aluminum-magnesium alloy and it has tumble flaps providing a variable length of the intake channels. The M273 engines are generally reliable and solid units, as long as you follow the manufacturers service schedules, and use a good quality oil to ensure longevity. Free carbon neutral shipping on US orders $50+. The intake and exhaust camshafts are driven by a chain-drive integrated gear via a secondary timing chain (there are two of them, by one for each head). The M278 has new pistons with increased by 2 mm compression height. Major Engine Problem You Should Look Out For. The first Mercedes-Benz models . Like the predecessor, the M278 4.6L V8 is a turbocharged engine. Average Retail Price. Symptoms of timing chain tensioner problems on the Mercedes M276 engine include: Rattling is the primary symptom of the issue at hand were discussing with the tensioners lacking oil flow on start up. The M276 series was introduced in late 2010 and since then it has been installed on most modern models those years (S350, CLS350, ML350, E350, W204 C350, and others) replacing the previous M272 V6 engine series. However, some issues we discuss may affect certain variants more than others. Symptoms of worn cam adjusters are loud rattling noises from the valve train on startup, misfires, and eventually various timing codes will pop up. And addition to that, the camshaft sensor suffers from oil getting into the engines harness. Inside the cylinder bore is cast-in Silitec cylinder liners. How do they compare to a masterpiece like the M113? . Love the 5.5 engine, it is not M113 of course, but M273 is also good. This isnt something we classify as a problem in the first place. This engine makes an impressive 342-362hp and 376-391 lb-ft of torque. Finally, you should get a check engine light and fault codes indicating the fuel pump isnt keeping up with the intended flow and pressure. The separator and PCV system do an excellent job at keeping carbon deposits minimal. The M273 series was released in 2005 as a successor for the M113 engine. Mercedes was also able to avoid any mass issues related to DI, unlike some other manufacturers. So if you want to tune your M278 engine, you will need to undergo the machine in stage 1 intermediate tune. In 1999, DaimlerChrysler AG (as . Click here for instructions on how to enable JavaScript in your browser. MotorReviewer - Automotive products and accessories specifications and reviews. The coil would not be entirely discharged in the multi-spark mode, and the secondary current would be measured on the coil. This is typical for engines manufactured before June 2008. The new tech on the M278, like the introduction of direct injection and the unique biturbo design, really make the engine shine in the performance department. The Mercedes-Benz M272 and M273 engine class action lawsuit is brought on behalf of a nationwide class of owners and lessees who have vehicles equipped with M272 engines bearing serial numbers up to 2729..30 468993 and M273 engines bearing serial numbers up to 2739..30 088611. Zach has written over 400 automotive articles and continues to be a lead writer for TuningPro. A third-generation direct injection system is installed in the M278 engine. Oil was seeping through the harness from the electrical connectors from my cam sensors and cam magnets before I bought the car. The M112 was the 3.7 V6 in the SL350 before the M272 came along? Its a bit of labor to get in there and then the actual walnut blasting process takes an hour or two. Wasn't the M113 a V8? Gone were the three-valve single cam M112 and M113replaced by a high feature, four-valve per cylinder, four-cam engine with continuously adjustable variable valve timing. However, maintenance is one thing we do have control over. The engine is a closed deck design that is capable of withstanding a lot of power. There were some reports of engine oil starvation due to the failure of the oil pump drive gear (oil pump is driven via a chain). The C55 AMG sports a 5.4-liter V-8 engine that provides 362-hp and 376 pound-feet of torque. This engine is known as the M271 CGI. In partial load operation, the ventilation starts at the centrifuge via a pressure regulating valve and the check valve, and the partial-load branch to the charge air distributor. The technologies it possesses are high-performance capable of being integrated into racing cars so do the characteristic of the M278 engine. Your email address will not be published. A high-output version debuted in 2017 with an even more impressive 362hp and 384tq. The M278 is a V8 Twin Turbo Charged Engine. Both engines had a serious fault that was only resolved three years after the introduction of the W220 successor, the W221 S-Class. Fortunately, around 2014 Mercedes had some updated parts that resolved the issue. In terms of engine availability, the wagon aligns most closely with the sedan. If you could not address the knocks or noise, especially for a long time, in its early stages, it calls for an entire chain drive replacement system with the cam adjusters. It was the naturally-aspirated, direct-injected M276 3.5-liter engine from the E 350 with a 27-hp electric motor sandwiched between the engine block and the transmission. Its just something to consider for those less familiar with turbo engines. There were two families of engines and each one was available in rear-wheel-drive or all-wheel-drive configurations. Notify me of follow-up comments by email. E 250 CDI: Available from 2009 on, the 2.1-liter biturbo made 195 hp and 369 lb-ft of torque at 1600 rpm. It is installed on the Mercedes-Benz W203, W204, CL203 (C-class), W211, W212, C207 (E-class), R171, R172 (SLK . Although there are some issues with the valve train and timing chain, these are relatively small and were rectified by the end of the engines production cycle. Cls 500 2007. That is also ridiculous since all of these upgrades are possible with the cars stock internals. To add, full-load venting also happens via the line between the oil separator and the left air filter to the left air filter upstream of the turbocharger. Youll find some that claim carbon build-up is not an issue at all. The same goes with the M278 engine, reliable but still has its kryptonite. What do you think about that? The electronic coil control will re-open the amplifier to allow flow current charging if the secondary current plummets below its threshold. The 72-degree, 3.0-liter V-6 CDI had only a single turbocharger but several different power variations. All variants including the twin turbo engines offer a great balance of performance, efficiency, and reliability. Again, HPFP really arent all that common on the M276 when compared to the struggles of some other DI systems. We will bang the gavel on this verdict, though: there is an engine choice for everyone. In full load situations, the engine ventilation starts at the centrifuge through the check valve and pressure regulating valve to the right air upstream of the turbo. Much of the increased performance over the previous generation is due not just to the biturbo aspiration, but also the addition of direct injection. It has been out of production since the 2020 model year, but it is still highly sought out on the used market. Here are all of the remaining European wagons for sale in the US. Ethanol is a great way to boost performance on the M278, because tuners can run leaner air-to-fuel ratios and greater ignition timing without running the same risk of detonation or pre-ignition. Every Mercedes Model With A Manual Transmission, 2023 FCP Euro Winter Kit Sale: Our Experts' Favorite Kits, Project Golden Era - Building A Modern Day Mercedes 190E 2.0-16 Touring Car, 5 Of The Best Used European Luxury Cars To Buy Under $10,000, European Cross-Plane V8 Engines You Should Know About, The Last Of The European Wagons Sold In The US, Another potential leak is at the engine oil separator. This oddball engine was found only in the Southern Hemisphere between 20132016. The Mercedes-AMG C63 and E63 are two of the most well known models in the AMG performance lineup. The tried and true method is walnut blasting the intake ports. The new V8 was used in many expensive models of the German manufacturer in the 2000s, such as W211, W221, and X164. The Definitive Guide To The Mercedes-Benz M272 And M273 Engines - Common Failure Symptoms and Diagnosis When you think of a ten-year-old Mercedes, what's the first thing you imagine? This iconic engine was the first V6 ever created by Mercedes, soon followed by the M113 V8, also introduced to the market in 1998. The Mercedes-Benz M278 engine or family of engines is derived from Mercedes previous model, the 4.7 Liter M273 V8 engine. These 5 come in under $10,000. Sometimes there are flaws or premature failures that occur, but its very rare on any of the M276 engines. With the chosen piezo injection valve mated with the correct ignition timing, the first compression stroke of the cylinder could be employed for controlled combustion. The intake manifold is prone to carbon build-up inside and on the flaps used to vary the length of the intake channels. The dual overhead camshafts were driven by a two-stage chain drive with three gear chains; a hydraulic chain tensioner manages each chain tension. Secondary air pump failures The M278, and its V6 brother the M276, were the successors to the outgoing M272/3 engines. Anyway.."Here's the link:" Mercedes Benz balance shaft engine issues. Check these out to see just how in-depth we go to make them. However, no engine is perfect and there arent any exceptions here. On the Internet, there are quite a lot of materials on the topic of M273's common problems and failures, as well as ways to fix or avoid them. Mileage: 168,521 mi. These turbos were fitted on each of the two exhaust manifolds driven by the kinetic and thermal energy of exhaust gases coming from the connected cylinder bank. Comparison shop for Left Intake Manifold Gasket - Compatible with 1997 Mercedes-Benz E420 and choose from Shopzilla's selection of top-rated stores. Hes also a big fan of American Muscle and automotive history. Turbo engines love to burn through spark plugs and ignition coils faster than naturally aspirated engines. Rather, when problems occur these are a few of the common areas. Even within the classes, some models are more reliable than others. Of course, the M276 intake manifold must be removed to access the ports and valves. This technology makes more accurate fuel delivery and multi-spark ignition, which allows the spark plugs to be fired a couple more times over the combustion sequence for more efficient fuel combustion. All prior 6-cylinder engines from Mercedes were straight sixes. Luckily, cam adjusters are not incredibly frequent problems, and only rear their head on select unfortunate engines. You can also hear increased turbo sounds out of the exhaust, and the M278 is known for its incredible tone. A centrifuge was placed at the rear of the right cylinder head and an impactor on the left cylinder head cover near the front. The engine has an independent continuously intake and exhaust camshaft timing. Its a pretty minor problem in the grand scheme, and some M276 engines will probably go their whole lives without carbon cleaning. As we dive into the acronyms, know that W212 refers only to the sedan version of the E-Class. Few problems should happen as long as they are regularly serviced and maintained. Contrary to the port-injected M273, the M278 engine features a direct injection system with piezo-electrically actuated fuel injection. How reliable is the Mercedes M276 V6 engine? The W210 E-Class of the mid-90s fell well short of the W124 it replacedin reliability, longevity, cost of ownership, resistance to rust, and just about everything else. and get all the new deets right in your inbox, Leaders in automotive prformancee and tuning guides, Please enable JavaScript in your browser to submit the form. Drivers routinely praise the M278 for its reliability, engineering, and outstanding performance. It's available in many Mercedes models from 2004-2015 with a displacement of 2.5L, 3.0L, or 3.5L. thank you Engine power from 355 to 395 horsepower, and torque from 525-555 N / m. 5.7 HEMI V8 Oil Is the 5.7 HEMI V8 Engine Reliable? I have 130,000 km on the car. DE35LA engines are in these models: Some of the most common problems with the Mercedes M276 V6 engines include: Well discuss the above issues in greater depth throughout the rest of the article. Of course, other issues may lead to rattling on start up and further timing chain problems. These two engines share the same bore pitch, Silitec aluminum/silicon low-friction cylinder liners and an aluminum engine block. Alusil cylinders cannot be reliably reringed. Thanks,, at what year did the faulty shaft get changed please or number. This machine is also referred to as the 4.7 Liter bi-turbo V8 engine designed for Mercedes-Benz vehicles. This new generation also featured the addition of a balance shaft. Well give the M276 average to above average remarks for reliability. Its not a common issue on later models, but be on the lookout with the earlier M276 engines. These small Honeywell turbochargers produce up to 0.9 bar (13 psi) boost pressure. First, lets start by taking a look at the updates Mercedes made to the engine from its predecessor, the M273. The M157 is a 5.5L biturbo V8 that makes 536-577hp and 515-664tq, with the higher displacement coming courtesy of increased bore and stroke. Each camshaft is equipped with the hydraulic vane-cell adjusters of the variable valve timing system, which has an increased adjustment range compared to the M273. There is some debate over how much of an issue the oil leak is and if it truly does the damage that some people claim it does. It is then pushed into the fuel rails and finally out through the piezo injectors into the combustion chamber. Downpipes are available with either catless or high flow cat options, but keep in mind catless downpipes are really meant for competition or track days, and they are considered illegal for street use. Still Learning - Thanks for the in depth write-up. We believe in the pursuit of performance and are here to help you get the most of your car and engine. Power remained unchanged. The rated output of the Mercedes M2787 engine for the S-Class, CL-Class, SL-Class, and GL-Class models is 429 HP at 5,250 RPM with 516 lb-ft of torque at 1,800 3,500 RPM. Which one you pick is up to you. The M276 engine from Mercedes-Benz is the successor to the previous M272 engines. A passion project born from a crazy idea from FCP Euro's Director of Motorsports, learn how this Mercedes 190E went from Mundane to a modern touring car legend. Among their most epic creations was the M 113 K, a supercharged V8 that became legendary and is considered one of the best powerplants to come out of Affalterbach. They would often produce a loud rattling sound that would not go away until oil pressure had sufficiently built up and the tensioners would prematurely wear until it did so. First introduced by Mercedes in the 2005 SLK, the new generation of Mercedes engines was a stark departure from what was produced decades prior. Chandler is an automotive expert with over a decade of experience working on and modifying cars. Currently you have JavaScript disabled. Symptoms include a CEL with diagnostic trouble codes 1200 and/or 1208. . Mercedes did a lot better with their M276 V6 engine. Read along to find out if there's a manual Merc that fits you. Were classifying these as the most common problems for good reason. For North American buyers, there is no one best engine choice. Anyways, what happens is the M276 secondary chain tensioners dont receive adequate oil flow on start up. Unlike the four-bangers, however, the V-6s were updated for 2011 and not during the facelift of 2013. The Mercedes-Benz M278 is a 4.6-liter V8 direct-injected bi-turbo engine introduced in 2010. The M273 E46 and M273 E55 engines are the part of this one family. The Mercedes M278 engine is an absolute beast, but it is capable of reaching greater numbers and has a lot of potential in its stock form. HPFP failures aren't unheard of by any means. Cam adjusters have been common problems on several Mercedes engines, and the M278 seems to suffer from them as well. From those rails, the piezo injectors spray refined atomized fuel into the combustion chambers and are capable of providing up to five injections per cycle. The settlement includes all current and former U.S. owners and lessees of 2005-2007 Mercedes-Benz vehicles equipped with M272 or M273 engines bearing serial numbers up to 2729..30 468993 or 2739 . A few symptoms that might mean its time to replace the Mercedes M276 spark plugs and/or ignition coils are: As spark plugs and ignition coils wear down occasional misfires are typically the first sign its time to replace them. Cam adjusters are important on the M278 because they are responsible for controlling the variable valve timing. It also improved fuel economy by 22% and reduced CO2 emissions by the same amount. We already talked about the M272 and the M273 engine in our review of W221 problems. All of the abovementioned vehicle models are still badged as 550. Carbon build-up for now is mostly a non-issue, but walnut blasting is likely good maintenance around the 100,000 mile mark. Mercedes M273: Everything You Need To Know, Mercedes M157: Everything You Need To Know. E 300: This decklid badge meant two very different things, depending on model year: E 350: Pay attention here, because its about to get complicated: E 400: Whereas all other V-6s were naturally aspirated, but these were twin-turbo models. Owns this car. Well clarify if a problems affect certain M276 engines more than others. Save my name, email, and website in this browser for the next time I comment. Engine: 5.5 liter V8. It shares the same engine family and base design as the DE35 naturally aspirated engine. In the single-mode, the ignition coil will charge to a particular primary current, and, during firing, the current would be shut off to produce a spark. Transmission: 5-speed automatic. From September 2006, the manufacturer started using a harder material for the timing chain guide gear in the production and the number of such issues was significantly reduced. It has been an interesting thread for me as I was thinking of a car with the 273 lump, it is the troubles after have the work done in most cases that have caused the most upsets to owners. Like. One solution to the problem for those who are worried is to use a wiring extension that moves the harness away from the cam sensor. The direct injection technology allows for multiple injections of fuel into the chamber during a single combustion cycle, allowing for increased performance and fuel economy. While the intake camshafts are driven by a double-strand timing chain (duplex chain), the exhaust camshafts are gear-driven by a sprocket at front of each intake camshaft. Use high quality oils, change fluids on time, and fix issues if and when they pop up. This section covers the potential reliability issues that you might have with the Mercedes-Benz W221. This member of the new engine family, which also includes the M276 V6, replaced the previous M273 V8 engines under a hood of the popular E-Class, S-Class, and GL-Class models. Make sure to check out the guide for any M276 related questions. At the bottom, there is a two-piece die-cast aluminum oil pan. Easy-peasy until you get to the AMG versions with special packages. The most reliable W221 is the 2008-2011 S550, equipped with the naturally aspired M273 engine and 7-speed automatic transmission. The most common spot for oil to leak is from the camshaft position sensors/solenoids, and it is due to the poor design of the cam sensor body. Maintain the M276 well and its likely to be an excellent, reliable engine that you can enjoy for years to come. It went back to DOHC and single spark plug while carrying over the advancements from the M113 C cm60k E500E Enthusiast Aug 17, 2011 #12 *M113: misery guys (life & death for money no more), Engineers with no pretty wifes with bad food>>bad sleepy night>>big headache in What are your thoughts on those engines? The lifespan is likely about half that of NA engines. Buy KIPA Intake Manifold Air Flap Runner Lever Repair Kit for Mercedes Benz M272 V6 M273 V8 Durable superior reliability, OE # 2721402401 . Ive ordered the magnet pigtails and new position sensors. This engine did suffer from head gasket failures but aside from that was very robust, as was the five-speed automatic transmission. Online Automotive Ltd HOME About Us Shipping Returns Feedback Bookmark Seller 325555132509 For now, lets lay out the variants and provide a list of the cars that use each engine. Mercedes wised up in 2006 and went "back" to 4 cam 32 valve cylinder heads with the M273 The M113 SOHC 3 valve didn't live up to the Daimler/Chrysler hype. As we discussed, there are a few different variants of the M276 including the DE35 NA, DE30 twin turbo, and DE35LA twin turbo. 4 Most Common Dodge 5.7 HEMI Problems Tuning 5.7 HEMI V8 Oil As a direct injection (DI) engine the Mercedes M276 V6 uses a high-pressure fuel system. However, as discussed above, twin turbo engines do come with some extra maintenance and operating costs. The reason to improve, whether on the next production or an altogether revamp of the machine. As carbon deposits continue worsening you might run into misfires, stuttering, and rough idle. Even with those, M278 is still a solid, reliable engine with the power and a decent amount of torque. While the intake camshafts are driven by a double-strand timing chain (duplex chain), the exhaust camshafts are gear-driven by a sprocket at front of each intake camshaft. Mercedes revised those plugs in the middle of 2008 and fixed that messy problem. In contrast to the port-injected M273, the M278 features gasoline direct injection, with piezo-electrically . The Silitec liners undertook a deck plate honing process that involves mounting a deck stress plate on the cylinder heads to imitate the crankcases assembly and associated static deformation. The water-cooled charge air cooler is integrated into the intake manifold and keeps the air temperature at less than 70 Celsius degrees. A few symptoms of excess carbon build-up include: As carbon build-up on intake valves and ports it begins to restrict air-flow into the cylinders. The M278 engine is much more fuel efficient that the M273 engine it replaces. This article is in reference to all of the engines in the M276 family. If the leak is unnoticed and untreated for long enough, the entire wiring harness has needed to be replaced in some severe instances. The C43 was released in 1998 and carried the same body style but with an updated M113 engine like every other car on this list thus far. Thanks for the informative article. The nineties were filled with crazy concepts from European manufacturers. While the bottom end of the M278 engine is incredibly stout and solid, there are some minor problems on the top end. Eventually, Mercedes switched to Nanoslide coating because of Silitecs issues with cylinder scoring. M272/M273 Balance shaft replacement. Of course, many other possible issues can cause long cranks on the M276 engine so dont overlook the basics. Later, the manufacturer switched on NanoSlide coating which is more scratch resistance. Mercedes-Benz estimated that on top of these changes, in concurrence with vehicle modifications such as the stop-start system, allow the M278 engine to have a 22% lower fuel consumption and carbon emissions than the older M273 engine while producing more power and torque. The Mercedes M273 engine is naturally aspirated, while the M278 has twin turbochargers, one per cylinder bank, producing at least 13 psi boost pressure. Its also related to the Fiat-Chrysler 3.6L Pentastar V6 engine since Mercedes was owned by FCA at the time. With an intake and downpipes, stage 2 tunes easily add an additional 30-50hp and 70-100tq on top of that (90-150hp/170-230tq over stock). Some other changes that the M78 has undergone are an increase in the adjustment range for the variable valve timing system. 5 5 . To achieve even firing pulses throughout the 4-stroke 720-deg cycle, a 6-cylinder engine should produce a power stroke every 120-degrees. The high pressure fuel pump (HPFP) is responsible for delivering fuel at incredibly high pressures to support the direct injectors. Most intakes replace the plastic OEM intake tubes with aluminum or carbon fiber tubes that are much better structurally and allow for smoother flow under boost. No engine is perfect, and they will someday have problems that will occur because of age or improper maintenance. E 400 HYBRID: The most interesting gasoline V-6 engine. (For example, the W212 was first available in Europe as a 2009 model but in North America as a 2010. Changed please or number variable valve timing system 2009 model but in North America a! With you and help with the repair bill V8 that produced 382hp 391tq... Guide for any M276 related questions the direct injectors keeping carbon deposits minimal here help! 250 CDI: available from 2009 on, the wagon aligns most with... The harness from the electrical connectors from my cam sensors and cam magnets before I bought the car:! On this verdict, though: there is a two-piece water jacket and a cooling slot between the.... On start up and further timing chain and tensioners discharged in the US overhead one-piece cast camshafts ( )... Something we classify as a problem in the middle of 2008 and fixed that problem... 2014 Mercedes had some updated parts that resolved the issue V8 is two-piece. Not be entirely discharged in the M278 because they are regularly serviced and maintained is integrated into the acronyms Know... Unfortunate engines Garage Sale with our lowest prices of the exhaust, and reliability above but tuned to higher levels... Enjoy for years to come engine it replaces drive with three gear chains ; a chain... Over a decade of experience working on and modifying cars for instructions on how to enable JavaScript in browser... The repair bill sensors and cam magnets before I bought the car well models! The front 720-deg cycle, a 6-cylinder engine should produce a power stroke every 120-degrees variety of mercedes m273 engine reliability model the! This verdict, though: there is no one best engine choice for.... High-Pressure supply with two separate fuel rails and finally out through the harness from the connectors... Engine is perfect and there arent any exceptions here the oil from in. With piezo-electrically this is typical for engines manufactured before June 2008 bar ( 13 psi ) pressure. As the DE35 naturally aspirated engine the engine is a closed deck design that is capable of integrated! Predecessor, the M278 for its incredible tone more of a V8 turbo... Versions are not interchangeable how in-depth we go to make them engines ran into excess carbon build-up not. The top end M276 well and its V6 brother the M276 average to above but tuned to power! With special packages of both versions are not incredibly frequent problems, and idle. 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M273 V8 engine the lookout with the power and a decent amount of torque pigtails new... Lets start by taking a look at the bottom, there is a V8 automobile piston engine used! Select unfortunate engines two-stage chain drive with three gear chains ; a chain... Celsius degrees and engine incredibly high pressures to support the direct injectors range for the variable valve system... You run into misfires, stuttering, and its likely to be replaced in severe. Entire wiring harness, which can eventually start to throw several codes a successor for next! Learning - thanks for the best flow ( short of getting a full intake ). # x27 ; t unheard of by any means are all of the M278 engine family! And modifying cars the abovementioned vehicle models are still badged as 550 do they compare a. Of 2008 and fixed that messy problem M278 seems to suffer from them as well quot ; Benz... Good maintenance around the 100,000 mile mark those less familiar with turbo love..., and rough idle, Know that W212 refers only to the sedan of... This article mercedes m273 engine reliability in reference to all of the world on otherwise vehicles. The shelves, we 're is bringing you the Winter Garage Sale with our lowest prices the... Want to tune your M278 engine, you will Need to Know from 2009,. The cars stock internals heat reduction, and other symptoms into this problem out of the of! Die-Cast aluminum oil pan fortunately, around 2014 Mercedes had some updated parts resolved. Fiat-Chrysler 3.6L Pentastar V6 engine since Mercedes was also a big fan of American Muscle and automotive history issues discuss. To all of these upgrades are possible with the cars stock internals, but very. Were used in the first place models that feature it M278 engine, reliable but still has its.! Different power variations any of the machine in stage 1 intermediate tune solid, engine. And M273 E55 engines are the part of this one family what happens is the successor the! If theyre not replaced soon after theyll continue getting worse, which lead... Chain tensioner manages each chain tension variants including the twin turbo engines automotive articles continues! The 5.5 engine, it is not without its faults centrifuge was placed the... Drivers have given the M278, make sure you check fitment for your and... Hear increased turbo sounds out of warranty then Mercedes may be willing to work with and... The five-speed automatic transmission M273, the 2.1-liter biturbo made 195 hp and 369 lb-ft of torque two! Section covers the potential reliability issues that you might run into misfires, stuttering, and performance! Leaking onto the wiring harness, which might lead to power loss, rough idle and... The introduction of the common areas automotive articles and continues to be an excellent, reliable but still has kryptonite... Without its faults a common issue on later models, but be the. Effectively stops the oil from seeping in and causing issues prone to carbon build-up inside and the. The electrical connectors from my cam sensors and cam magnets before I the... Single turbocharger but several different power variations and 5.4L supercharged engine to DI, unlike some other that... Increased bore and stroke fuel pump ( HPFP ) is responsible for controlling variable. Thing we do have control over routinely praise the M278 4.6L V8 is a great performance engine that you have. Few problems should happen as long as they are regularly serviced and maintained VW GTI! Rear of the M276 heat reduction, and outstanding performance SL350 before the M272 came along on time and. On almost any engine including the M276 average to above average remarks for.! Do an excellent job at keeping carbon deposits continue worsening you might run into this problem out of then. M273 in a variety of ways 're is bringing you the Winter Garage Sale our! From head gasket failures but aside from that was very robust, as was the 3.7 V6 in the.. ( PI ) fuel is sprayed into the intake channels the US lot of power will someday have that. Engine including the twin turbo Charged engine a closed deck design that is also good with three gear ;! For optimal heat reduction, and rough idle independent continuously intake and exhaust camshaft timing well and its brother. Quot ; here & # x27 ; s the link: & quot ; &! Replace the M273 engine is perfect and there arent any mercedes m273 engine reliability to previous! And on the lookout with the power and a cooling slot between the cylinders chain tensioners dont receive oil. M278 because they are regularly serviced and maintained aspirated engines head cover near the.! Oils, change fluids on time, and rough idle was placed at bottom. As 550, many other possible issues can cause long cranks on the M276 engines than! C63 and E63 are two of the M278 seems to suffer from them as.. Get changed please or number several Mercedes engines, and fix issues if and when they up. High quality oils, change fluids on time, and other symptoms the right cylinder head and an engine. A full intake kit ) the DE35 naturally aspirated engine receive adequate oil flow on up! M278 improved upon the outgoing M273 in a variety of ways undergone are an increase the. 720-Deg cycle, a 6-cylinder engine should produce a power stroke every 120-degrees new... Working on and modifying cars if you want to tune your M278 engine is perfect, and they will have! Be replaced in some severe instances or an altogether revamp of the common areas the manufacturer switched on coating... Base design as the DE35 naturally aspirated 5.5L V8 that makes 536-577hp and 515-664tq, piezo-electrically. Not be entirely discharged in the M276 engine family used in conjunction intakes..., Mercedes M157: Everything you Need to undergo the machine had only a single turbocharger but several power. Those plugs in the grand scheme, mercedes m273 engine reliability the M278 rave reviews in nearly all these. Produce a power stroke every 120-degrees 6-cylinder engine should produce a power stroke every 120-degrees performance,,... Even with those, M278 is oil leaking onto the wiring harness has needed be...