How reliable is the Mercedes M276 V6 engine? 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. Also, there were some problems with premature valve guide wear, but later engines don't have that issue. From 20132016, the E300 CDI received a diesel particulate filter and a BlueTec. Car. Intakes and downpipes especially benefit from added tuning, which will prevent the engine from running too lean and experiencing detonation. Chandlers passion and knowledge of the automotive industry help him deliver high-quality, insightful content to TuningPro readers. Despite all unpleasant things, in general, the M273 engine lifespan is close to 200,000 miles (300,000-320,000 km). On the M276 DE35 the plugs should last about 70,000 miles and ignition coils twice that long. The Mercedes-Benz M273 engine family includes a 5.5-liter and 4.7-liter gasoline V8s based on M272 V6. Join for Ratings and Reviews. Does it have a biodegradable wiring harness, how about the transmission type? Of course, other issues may lead to rattling on start up and further timing chain problems. The Mercedes-Benz M278 is a family of direct injected, Bi-turbocharged, V8 gasoline automotive piston engines.. Combined with the 722 5-speed automatic, the M113 V8 has been known to be incredibly reliable, suffering none of the problems that you'd associate with other brands. It requires a major overhaul. That is also ridiculous since all of these upgrades are possible with the cars stock internals. Misfiring. The M273 was a naturally aspirated 5.5L V8 that produced 382hp and 391tq in its final iteration. It quickly earned rave reviews from critics and enthusiasts, who praised, Read More 5 Best AMG C43 Performance UpgradesContinue, The Mercedes-Benz M272 is a V6 engine tasked with replacing the M112, Mercedes first V6 engine. Get help answering any questions you have, How to Diagnose & Repair Volvo "Anti-Skid Service Required" Message, Seven New European Cars That Offer A Manual Transmission (2020 Model Year). Buy KIPA Intake Manifold Air Flap Runner Lever Repair Kit for Mercedes Benz M272 V6 M273 V8 Durable superior reliability, OE # 2721402401 . The crankshafts, pistons, and rods of both versions are not interchangeable. You must log in or register to reply here. The separator and PCV system do an excellent job at keeping carbon deposits minimal. Theyre all excellent engines that offer a good balance of performance, reliability, and efficiency. Higher cylinder pressures, more air and fuel, etc contribute to turbo cars burning through plugs and coils. Love the 5.5 engine, it is not M113 of course, but M273 is also good. Alternatively with which engine could I replace this engine with? Click here for instructions on how to enable JavaScript in your browser. Its also related to the Fiat-Chrysler 3.6L Pentastar V6 engine since Mercedes was owned by FCA at the time. Fortunately, the M276 HPFP rarely fails suddenly but rather over the course of a couple months or even years. However, for anyone looking at upgrading their turbos, aftermarket intakes with higher airflow are definitely recommended. OK on doing a search I see that the 55 273 engine has the same problems, plus many problems after new gears have been fitted, it seems the head gasket is easily damaged causing water leaks and other damage can be done to the sump gasket causing oil leaks. Contrary to the port-injected M273, the M278 engine features a direct injection system with piezo-electrically actuated fuel injection. For a better experience, please enable JavaScript in your browser before proceeding. 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. It seems more and more cases pop up as some of the early engine keep aging. The M273 is a big performance engine, and with that comes big performance engine problems, followed by equally significant Mercedes prices. Required fields are marked *. Ensure the M272 engine serial number is later than 2729..30 468993. Drivers routinely praise the M278 for its reliability, engineering, and outstanding performance. The M278 engine is much more fuel efficient that the M273 engine it replaces. Later, the manufacturer switched on NanoSlide coating which is more scratch resistance. Theyre naturally aspirated but do utilize direct injection and a high pressure fuel system. A lot of this improvement was due to a switch from natural aspiration to twin-turbos. Though, excess deposits can cause performance and drivability concerns. Its difficult to judge a model that was introduced less than a decade ago; but, according to the above-mentioned criteria, we can safely say the 20102016 W212 E-Class improved on the W211. Minor Oil seepage from the outermost cam position sensors but the innermost were dry and all 4 magnet connections were also dry. This causes power loss, but its usually very hard to notice since it occurs slowly over the years. Engines produced in 2006 had a problem with rapid worn timing chain guide gear (less than 60k miles). 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. This involves a heavy-duty shop vac and walnut media shells. Your email address will not be published. Here, too, were two types of engines: the older M272 series and the newer M276 series. 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. Cam adjusters have been common problems on several Mercedes engines, and the M278 seems to suffer from them as well. The M273 series was released in 2005 as a successor for the M113 engine. The redline was relatively low, however, at just 6,500 RPM below its predecessors. Do you already have one or are you in the market for an S 550 or SL 550 with one under hood? 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. By far the biggest issue with early versions of the M278 were the timing chain and tensioners. End of Time:::: You can also hear increased turbo sounds out of the exhaust, and the M278 is known for its incredible tone. Mercedes replaces the outgoing M278 V8 engine range with the latest 4.0-liter M176 engine series introduced in 2015. Fortunately, around 2014 Mercedes had some updated parts that resolved the issue. HPFP failures arent unheard of by any means. But the true intentions of M278 is not about boasting its power but more of a V8 brand. The below video may be a helpful resource for some experiencing rattling on start ups. Hello everyone, I've have a bad headache with this m273, the car starts misfiring on cylinders 4 and 5 on startup, usually clearing after 5 mins. 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. M276 DE 35 engines offer 248 to 302 horsepower, which is very respectable performance for a NA engine. In deference to the related M276 V6 engine, the M278 machine is equipped with hydraulic vane cell camshaft adjusters with an integrated control valve for a responsive and instant operation. 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. It also improves on fuel economy and emissions from its predecessor, while losing almost a liter in displacement. Fun car that always put a green on my face. I think Ill go for a later model engine to try and avoid the rattle unless I can find one already rectified. The W212 featured four families of V-8 engines with four different displacements. A centrifuge was placed at the rear of the right cylinder head and an impactor on the left cylinder head cover near the front. Cam adjusters are important on the M278 because they are responsible for controlling the variable valve timing. Dealer told me they replaced the harness, the ECU, oxygen sensors, cam magnets, cam sensors and a few more parts the oil got to. You should avoid V6 and V8 Mercedes that came with M272 and M273 engines from 2004. . This would wear over time and cause the camshafts to go slightly out of phase and cause an engine management fault. Here are all of the remaining European wagons for sale in the US. The Mercedes-AMG C63 and E63 are two of the most well known models in the AMG performance lineup. They initially debuted in 2007/8 to a lot of hype and fanfare, and buyers expressed their approval of the new arrivals. However, as discussed above, twin turbo engines do come with some extra maintenance and operating costs. It has a non-return high-pressure supply with two separate fuel rails. This engine was also mated to the new seven-speed slushbox. 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 Mercedes M276 twin turbo engines are proving to be pretty reliable, though. The cylinders are arranged in a V configuration with 106 mm space intervals between them. We love turbo engines and would choose the Mercedes 3.0 or 3.5L twin turbo engine any day. Intakes and downpipes are also solid upgrades for the M278, with downpipes really adding responsiveness and increased sounds. 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. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. The new V8 was used in many expensive models of the German manufacturer in the 2000s, such as W211, W221, and X164. While the M273 was naturally aspirated, the M278 features twin turbochargers, one per cylinder bank and gasoline direct injection with multi spark ignition. 2013-2016: 2.0-liter turbocharged engine, made 208 hp and 258 lb-ft of torque. Some early M276 engines had a flaw with lack of oil on the timing chain tensioners leading to rattling during start-up. However, some issues we discuss may affect certain variants more than others. VW had quite a few problems early on, too. The cooling system is also managed by ECU - a mechanical thermostat was replaced by a new electronically controlled thermostat for optimum control of engine temperature. 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. 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