This article is in reference to all of the engines in the M276 family. Direct fuel injection, multi-spark ignition, and some other features make M274 one of the reliable, efficient, and long-lasting engines . Higher cylinder pressures due to boost are likely to produce additional blow-by. Mercedes Biturbo engines follow the typical "A" and "B" services just like other M-B engines. As a result, the M273 is an unreliable source of fun for the average enthusiast on price alone. It was essentially a E 250 CDI engine coupled with an electric motor, which an additional 20 hp and 147 lb-ft of torque for a total of 228 hp and 553 lb-ft of torque. It has a. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Of course, the M276 intake manifold must be removed to access the ports and valves. The 5.5-liter version (M273 55 KE) has 98.0 mm (3.86 in) bores and a 90.5 mm (3.56 in) stroke. Ensure the M272 engine serial number is later than 2729..30 468993. The current sleeves are badly scored Go read that article to learn more. E 63 AMG: Despite its relatively unchanging exterior, the hot rod of the group had several changes under the 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. *Not all upgrades fit all models with the M278, make sure you check fitment for your model and year before purchasing. They came in 1.6-liter, 1.8-liter, and 2.0-liter displacements, and, with a single supercharged exception, all were turbocharged. . Mercedes-AMG also created a variant of the M157, the M152, a 5.5L naturally aspirated V8. Youll find some that claim carbon build-up is not an issue at all. **We might refer to the different M276 engine variants (i.e M276 DE 30). Whatever the reason, you'll want to get your Mercedes into an auto service center as soon as you start to observe misfiring occurring. The M278 is a 4.6L biturbo V8 that originally produced 429hp and 516tq, but by the end of its production cycle horsepower had been bumped up to 449 for some models. Inside the cylinder bore is cast-in Silitec cylinder liners. 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. This is by far one of the most common problems with Mercedes-Benz models, including E25, E30, and E35. Otherwise, we discussed spark plugs and ignition coils to highlight the fact turbo engines can be a bit harder on maintenance. Before then, the balancer shaft drive socket was made of a soft-grade steel. Power varies from 275 to 574 horsepower impressive numbers for its era. E 500 and E 550: The E 500 was known as the E 550 in North America. This engine is known as the M271 CGI. Ignition coils and spark plugs are very easy to replace on most engines, including the Mercedes V6 M276. LegitStreetCars 919K subscribers Subscribe 8.5K 840K views 5 years ago Shopping for a Mercedes-Benz? 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). Also, there were some problems with premature valve guide wear, but later engines don't have that issue. Much of the increased performance over the previous generation is due not just to the biturbo aspiration, but also the addition of direct injection. Save my name, email, and website in this browser for the next time I comment. I personally prefer 5.5 over 4 turbo. Power was down the M152 compared with both the M157 and M278. We love turbo engines and would choose the Mercedes 3.0 or 3.5L twin turbo engine any day. Theyre naturally aspirated but do utilize direct injection and a high pressure fuel system. A 228-hp, 398 lb-ft version become the standard from 20102013. 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. 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 . The tried and true method is walnut blasting the intake ports. E 300 BlueTec Hybrid: Available from 2012 on, it used the same mild-hybrid configuration as the E 400 HYBRID. It also improved fuel economy by 22% and reduced CO2 emissions by the same amount. Mercedes also offers multiple variants of the M276 a 3.5L NA, 3.0L twin turbo, and 3.5L twin turbo. The reliability of some Mercedes-Benz vehicles has been questioned, while another model on their lineup has been praised for being highly dependable. Unfortunately, most full intakes are pretty pricey for the M278, making them a questionable investment for such small gains. Engine systems are controlled by the MED17.7 engine control unite (ECU). The same technology that lets the factory produce more power from the 5.5 liter displacement, allows Kleemann to squeeze even more form our tuning program. 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. It may not display this or other websites correctly. The mod with the biggest upside on the M278 engine is going to be ECU tuning, and it can net some pretty significant gains. Those same engines ran into excess carbon build-up as early as 40,000 to 60,000 miles. There are also issues with premature wear of valve guide on earlier M278 engines. Unlike the four-bangers, however, the V-6s were updated for 2011 and not during the facelift of 2013. Fun car that always put a green on my face. HI! M273 4.7L. The purpose of the increase in displacement is to run lower turbo boost. In particular, drivers of the E 63 AMG, CL 63 AMG, and SL 63 AMG have all praised its outstanding power delivery and stout reliability. Model: S550. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); TuningPro is a blog dedicated to providing car enthusiasts with the best information around performance modifications, engine problems, general maintenance and repair, and tuning. Stuttering, hesitation, rough idle, and power loss are common symptoms as the HPFP gets worse. All prior 6-cylinder engines from Mercedes were straight sixes. Labor can add quite a bit of money on top. The M278 engine has a forged steel crankshaft with eight counterweights and rotates on five main bearings. Click here for instructions on how to enable JavaScript in your browser. The M278 has new pistons with increased by 2 mm compression height. Mercedes reliability on the various models does depend a lot on which engine and transmission as some are renowned for issues and others are equally renowned for no issues. Transmission: 5-speed automatic. 2013-2016: 2.0-liter turbocharged engine, made 208 hp and 258 lb-ft of torque. Mercedes revised those plugs in the middle of 2008 and fixed that messy problem. 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. For example the. E 250 BlueEFFICIENCY: Similar to above but tuned to higher power levels. 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. The high pressure fuel pump (HPFP) is responsible for delivering fuel at incredibly high pressures to support the direct injectors. The Silitec coating showed themselves as bad cylinder surface material for operation under high temperatures and detonation. Anyways, plugs and coils arent truly problems on the M276 engine. Dirty flaps could be stuck or create high loads on the plastic VIM actuator cam. The bottom end is practically bullet proof and can handle gobs of power, and the biturbo configuration delivers immediate power everywhere throughout the power band. This guide will focus on everything we know about the Mercedes M278 engine, including its specifications, design, performance, and common problems. There were naturally-aspirated, turbocharged, and supercharged engines. 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. The lifespan is likely about half that of NA engines. Year: 2007. The W211 E-Class model that came around in 2002 significantly improved on the W210 but no amount of mid-cycle refreshment could bring it up to the standards set by its grandfather. Oil leakage was on the backside of the cylinder heads from the round expansion plugs made of plastic material. The working volume of the new power unit is 1.6 or 1.8 liters. Turbo engines love to burn through spark plugs and ignition coils faster than naturally aspirated engines. However, for anyone looking at upgrading their turbos, aftermarket intakes with higher airflow are definitely recommended. 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. 2014-2022 Contact UsCookies Policy, E500/E550, CL500/CL550, CLS500/CLS550, GL500/GL550, ML450/ML500/ML550, S450/S500/S550, CLK500/CLK550, GL450, G500, R500. The Silitec coating inside does not cut it since high temperatures and detonation during operations require resistance, and the material cannot contain it. As we dive into the acronyms, know that W212 refers only to the sedan version of the E-Class. But in reality, the M272 and M273 engines actually check all of the marks offering smooth operation and strong, reliable power. Performance models made between 429-449hp and 465tq, and peak torque was achieved at just 1,800 RPM. Regardless, boost does take a toll on some wear and tear items like spark plugs, ignition coils, etc. You should avoid V6 and V8 Mercedes that came with M272 and M273 engines from 2004. . 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 . Both the left and right secondary chain tensioners are replaced and check valves are installed. Cls 500 2007. Mileage: 168,521 mi. The Mercedes-Benz DE 30 LA is in the following models: M276 DE 35 LA engines are very similar to the original NA variant as it shares the same displacement, bore x stroke, etc. This machine is also referred to as the 4.7 Liter bi-turbo V8 engine designed for Mercedes-Benz vehicles. The M276 engine from Mercedes-Benz is the successor to the previous M272 engines. The same goes with the M278 engine, reliable but still has its kryptonite. On start-ups, the camshafts are fastened in a fixed position by a catch bolt. khomer2 However, with nothing spraying over the intake ports carbon build-up does occur. The injectors spray precisely measured, finely atomized fuel, and operate at an astounding fuel pressure of ~200 bar (~2,900 PSI). Incorrect operation of the variable intake manifold features the following symptoms: rough idle and a loss of power with check engine light illumination. The air cleaner box features two air filters. 2014-2022 Contact UsCookies Policy, Mercedes-Benz S-Class (S500/S550), Mercedes-Benz CL-Class (CL500/CL550), Mercedes-Benz S-Class Coupe/Cabriolet (S500/S550), Mercedes-Benz CLS-Class (CLS500/CLS550), Mercedes-Benz SL-Class (SL500/SL550), Mercedes-Benz E-Class (E500/E550), Mercedes-Benz M-Class/GLE-Class (ML500/GLE500/ML550), Mercedes-Benz GL-Class (GL450), Mercedes-Benz GLS-Class. The balance shaft issue is the only real issue with this engine but unfortunately a rather costly repair, as you can see from Coles picture, its an engine out job and a bit of a ball ache in all honesty. Drive as low as 4,8L/100km on highway, 1500rpm at 120km/h. 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