As mentioned earlier, the inside of the M278s cylinders were lined with Silitec, a hyper-eutectic aluminum-silicon alloy that is cast into the aluminum cylinder to reduce friction, lower heat, and reduce wear. These small Honeywell turbochargers produce up to 0.9 bar (13 psi) boost pressure. The Cheapest, Most Reliable Mercedes-AMG Cars Ever, Period! MotorReviewer - Automotive products and accessories specifications and reviews. Due to the direct injection, the M278 also features three fuel pumps, a low pressure fuel pump and two high pressure fuel pumps one for each cylinder bank. It's great when some one takes the time to be so informative. Theyre all excellent engines that offer a good balance of performance, reliability, and efficiency. Well give the M276 average to above average remarks for reliability. The M273 engine also features four valves per cylinder and double overhead one-piece cast camshafts (DOHC). Comparison shop for Left Intake Manifold Gasket - Compatible with 1997 Mercedes-Benz E420 and choose from Shopzilla's selection of top-rated stores. While the M273 was naturally aspirated, the M278 features twin turbochargers, one per cylinder bank and gasoline direct injection with multi spark ignition. 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). Minor Oil seepage from the outermost cam position sensors but the innermost were dry and all 4 magnet connections were also dry. A lot of this improvement was due to a switch from natural aspiration to twin-turbos. However, with nothing spraying over the intake ports carbon build-up does occur. The current sleeves are badly scored 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. HPFP failures aren't unheard of by any means. I cannot find cylinder liners/sleeves for this engine. Maintain the Mercedes-Benz M276 engine well and it will likely reward you with a fun and reliable experience. With traditional port injection (PI) fuel is sprayed into the intake ports. Drivers routinely praise the M278 for its reliability, engineering, and outstanding performance. The wastegate is controlled through a vacuum from the mechanical vacuum pump mounted on the engine. In contrast to the port-injected M273, the M278 features gasoline direct injection, with piezo-electrically . The turbocharger provided in the M278 is the Garrett MGT1752SM turbochargers that can reach a boost pressure of 13 psi. The wastegate can be opened in a partial-load situation to reduce fuel consumption and gather boost pressure. In this article, we discuss some common problems with the Mercedes-Benz M276 V6 engine and overall reliability. Incredibly, even with the addition of biturbos, the M278 still retained the same 10.5:1 compression ratio of the outgoing naturally aspirated M273. Free carbon neutral shipping on US orders $50+. HPFP failures arent unheard of by any means. Save my name, email, and website in this browser for the next time I comment. This combination achieved 24 mpg in the city and 30 mpg on the highway. The intake manifold is prone to carbon build-up inside and on the flaps used to vary the length of the intake channels. A cam plug oil leak is another widespread problem of this engine family. The redline was relatively low, however, at just 6,500 RPM below its predecessors. 2009-2013: 1.8-liter turbocharged engine, made 201 hp and 229 lb-ft of torque. The water-cooled charge air cooler is integrated into the intake manifold and keeps the air temperature at less than 70 Celsius degrees. An evolution of the M113 V8, [1] all M273s have aluminium engine blocks, sequential fuel injection, forged steel connecting rods, a one-piece cast camshaft, and a magnesium intake manifold. Make sure to check out the guide for any M276 related questions. 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. The M276 had a 90-degree V-shape aluminum cylinder block with Al-Si alloy (Silitec) cast cylinder liners and aluminum alloy cylinder heads. There were naturally-aspirated, turbocharged, and supercharged engines. The aluminum DOHC cylinder heads have 4 valves per cylinder. Initially, the C43 caught a lot of flack for its perceived lack of power, but it has changed critics minds with its deft handling, impeccable performance, and luxurious interior. 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. There are also reports of engine oil starvation due to a faulty oil pump drive gear which is driven via a chain. Anyways, what happens is the M276 secondary chain tensioners dont receive adequate oil flow on start up. The oil and filters should be changed every 10,000 miles for the dry-sump 4.0L, which holds 7-12L of oil, depending on the model. In 1999, DaimlerChrysler AG (as . 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. Its also related to the Fiat-Chrysler 3.6L Pentastar V6 engine since Mercedes was owned by FCA at the time. However, no engine is perfect and there arent any exceptions here. Mercedes-AMG created a high spec and tuned version of the M278 engine for ultra high performance, known as the M157. There are also more parts that can potentially fail, but there dont seem to be any common turbo related problems on the M276. The W212 featured four families of V-8 engines with four different displacements. Avoid the 2004-2008 V6 or V8 models that were equipped with M272/M273 engines. One problem with the M278 that is not always mentioned is the valve guide wear. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. Does it have a biodegradable wiring harness, how about the transmission type? Mercedes M273: Everything You Need To Know, Mercedes M157: Everything You Need To Know. A 3.5L naturally aspirated V6, 3.0L twin turbo V6, and 3.5L twin turbo V6. Spark plugs and ignition coils are standard maintenance on almost any engine including the M276. I checked my 2014 SL550 about a week ago. The S-Class is usually . Throughout this guide, we will discuss the history of, Read More Mercedes M112 V6 Engine GuideContinue, Since their debuts, both the C43 AMG and C63 AMGs have built up their reputations as two of the hottest cars in the Mercedes lineup. 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. E 250 BlueEFFICIENCY: Similar to above but tuned to higher power levels. 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. Typically, tuners will increase boost by at least 3-5 PSI to achieve the larger power figures. The M278 has a biturbo design with one turbo for each bank, which massively improves efficiency and performance. Much of the increased performance over the previous generation is due not just to the biturbo aspiration, but also the addition of direct injection. Both engines share the same die-cast full aluminum cylinder block with 90-degree V-angle and Silitec low-friction cylinder liners. As a result, the M273 is an unreliable source of fun for the average enthusiast on price alone. Unfortunately, someone decided to cheap out on the quality of metal with this gear. There are also issues with premature wear of valve guide on earlier M278 engines. Mercedes M278 engines also have a charge air cooling system. A stage 2 tune can stretch AMGs power and torque, reaching approximately 540 HP and 700 lb-ft of torque. This engine was also mated to the new seven-speed slushbox. I have 130,000 km on the car. Secondary air pump failures 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. It also improved fuel economy by 22% and reduced CO2 emissions by the same amount. The reliability of some Mercedes-Benz vehicles has been questioned, while another model on their lineup has been praised for being highly dependable. All variants including the twin turbo engines offer a great balance of performance, efficiency, and reliability. Its available as a 4.3, 5.0, 5.4, and 5.4L supercharged engine. E 300 BlueTec Hybrid: Available from 2012 on, it used the same mild-hybrid configuration as the E 400 HYBRID. The Most Common Problem with Mercedes-Benz Engines. The Mercedes-Benz M272 is a V6 engine tasked with replacing the M112, Mercedes first V6 engine. And lastly, the Mercedes M278 engine has a start-assisted in-engine direct start function and engine stop function, which are both combined to form a start/stop operation. Some may consider Mercedes-Benz solely a luxury brand. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. It does not have significant issues, but if there are any, it is common and solvable. Alright. Whats your experience with models containing the M278? Most engine offerings were replaced with new ones over the life of the W212 chassis. Join for Ratings and Reviews. Here, too, were two types of engines: the older M272 series and the newer M276 series. The crankcase ventilation is provided through a line between the impactor and the left air filter. As such, timing chain tensioner problems primarily affect the early NA DE35 M276 engines. Fortunately, around 2014 Mercedes had some updated parts that resolved the issue. 1) Mercedes-Benz M276 HPFP Issues. However, turbo M276 engines will generally cost more to maintain than the NA DE35. Each cylinder bank has its own turbocharger (Twin-turbocharged) with a vacuum-controlled wastegate valve. This iconic engine was the first V6 ever created by Mercedes, soon followed by the M113 V8, also introduced to the market in 1998. Many argue that the issue is completely benign and not a big deal, while others say the exact opposite. North American engine availability is duly noted below.). Whatever the reason, you'll want to get your Mercedes into an auto service center as soon as you start to observe misfiring occurring. Required fields are marked *. Inside the cylinder bore is cast-in Silitec cylinder liners. However, the fuel system underwent a massive change. The Mercedes-Benz M273 engine family includes a 5.5-liter and 4.7-liter gasoline V8s based on M272 V6. Hes been repairing, upgrading, tuning, and writing about cars & engines for over a decade. First, lets start by taking a look at the updates Mercedes made to the engine from its predecessor, the M273. Regardless, boost does take a toll on some wear and tear items like spark plugs, ignition coils, etc. However, no engine is perfect and that applies to the M276 as well. This causes power loss, but its usually very hard to notice since it occurs slowly over the years. Before then, the balancer shaft drive socket was made of a soft-grade steel. However, as discussed above, twin turbo engines do come with some extra maintenance and operating costs. The M276 DE30 and DE35LA are still awesome engines all around. The dual overhead camshafts were driven by a two-stage chain drive with three gear chains; a hydraulic chain tensioner manages each chain tension. They also cut down on turbo lag, making the car more responsive. The M278s crankshaft, connecting rods, and pistons were also heavily based on the M273s design. Were classifying these as the most common problems for good reason. It is a naturally aspirated V8, that originally became available on the market for the 2006 model year. The engine block of 4.7L M273 46 KE has 92.9 mm (3.66 in) bores and an 86.0 mm (3.39 in) stroke. While the factory intake is adequate, aftermarket intakes will add about 5-15whp while increasing induction sounds. The high-pressure pump is located at the rear end on the right intake camshaft and drives by 4 additional cams. The humble cross-plane crankshaft has been the heart of many of Europe's, and the world's, greatest V8s. This new generation also featured the addition of a balance shaft. The turbo M276 DE30 and DE35LA will probably need plugs every 50,000 miles or sooner while coils also last about twice as long. Read More Mercedes M256 Engine GuideContinue. The tried and true method is walnut blasting the intake ports. Which one you pick is up to you. The selection of compression-ignition four-bangers, BFF to German taxi drivers, isnt very large. Theres just one family of engines: the OM651-series, based on a 2143cc engine with Delphi controls. Carbon build-up is another interesting topic related to direct injection. Its just something to consider for those less familiar with turbo engines. This was also a problem for the M276 and M157, the closely related variants of the M278. The M278 is a V8 Twin Turbo Charged Engine. . Drivers have given the M278 rave reviews in nearly all of the models that feature it. This machine is also referred to as the 4.7 Liter bi-turbo V8 engine designed for Mercedes-Benz vehicles. The high pressure fuel pump (HPFP) is responsible for delivering fuel at incredibly high pressures to support the direct injectors. 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. Your email address will not be published. The M278 is derived from the company's previous M273 V8 engine, sharing its bore pitch, aluminium engine block, and Silitec aluminium/silicon low-friction cylinder liners. So far with our AER C300, we have been pleasantly surprised by the reliability and overall performance (other than shearing wheel studs off mid corner during a race). Even novice DIYers can knock out the job fairly easily. 4 Most Common Dodge 5.7 HEMI Problems Tuning 5.7 HEMI V8 Oil 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. Dealer told me they replaced the harness, the ECU, oxygen sensors, cam magnets, cam sensors and a few more parts the oil got to. Thanks for the informative article. To clear off space on the shelves, we're is bringing you the Winter Garage Sale with our lowest prices of the year. These two engines share the same bore pitch, Silitec aluminum/silicon low-friction cylinder liners and an aluminum engine block. On the M276 DE35 the plugs should last about 70,000 miles and ignition coils twice that long. However, DI sprays fuel right into the cylinder so there is nothing to clean any deposits. E 500 and E 550: The E 500 was known as the E 550 in North America. I hope that this discussion cleared some confusion in your head regarding the Mercedes M278 engines architecture, issues, applications, potential, reliability, and overall impact on the automotive industry. E 180: This 1.6-liter engine was from the M274 family and made 156 horsepower. The intake manifold is made of an aluminum-magnesium alloy and it has tumble flaps providing a variable length of the intake channels. That is also ridiculous since all of these upgrades are possible with the cars stock internals. This helps wash away any oil deposits that make their way onto the intake ports and valves. The W212 boasted reliability, resistance to ice-melting chemicals (lets not call it salt anymore), and an overall build quality that tacked much closer to the course set by the W124 two and a half decades previously. The M278 has new pistons with increased by 2 mm compression height. Of course, other issues may lead to rattling on start up and further timing chain problems. I think Ill go for a later model engine to try and avoid the rattle unless I can find one already rectified. Fortunately, the M276 HPFP rarely fails suddenly but rather over the course of a couple months or even years. 2013-2016: 2.0-liter turbocharged engine, made 208 hp and 258 lb-ft of torque. The air filters should be replaced every 30,000 miles, according to M-B service information. Cls 500 2007. Its also not a complicated repair for the DIY crowd, but labor can add in another chunk of money for the repair shop crowd. Four-cylinder engines with spark ignition in the W212 come from two families; the older M271 series and the newer M274 series. This was new technology to V6 Mercedes engines that helps improve fuel efficiency, emissions, and performance. A 228-hp, 398 lb-ft version become the standard from 20102013. 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. Labor can add quite a bit of money on top. For a fair compromise and comfortable daily driving, glance at the E 400. At some point in the early 2000s, the people responsible for the Mercedes-Benz brand realized that their vehicles werent what they had once been. Introduced in 2004, it is based on the M112 V6 introduced in 1998. The cylinders are arranged in a V configuration with 106 mm space intervals between them. Later, the manufacturer switched on NanoSlide coating which is more scratch resistance. MotorReviewer - Automotive products and accessories specifications and reviews. Another popular upgrade for M278 equipped cars is the intake. The Mercedes M276 twin turbo engines are proving to be pretty reliable, though. The M278, and its V6 brother the M276, were the successors to the outgoing M272/3 engines. The nineties were filled with crazy concepts from European manufacturers. 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 features advanced. This starting position is unlocked hydraulically the first time the intake and exhaust camshaft solenoids are activated. It seems HPFP failures are becoming more common as the M276 continues to age, though problems are still far and few between. The M112 was the 3.7 V6 in the SL350 before the M272 came along? 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. The engine is equipped with fracture-split, forged connecting rods and light-weight, low-friction aluminum pistons. First, it has 15% less displacement, yet it generated 12% more horsepower and 32% more torque. Zach is a founder of 8020 Media and TuningPro. For decades, the Mercedes-Benz S-Class sedan has reigned as a supreme icon of luxury motoring. On top of the direct injection system are a standard and multi-spark ignition mode. Oil leakage was on the backside of the cylinder heads from the round expansion plugs made of plastic material. Compression was raised to 12.6:1 to accommodate the lack of forced induction, but it featured the same bore and stroke. CLICK FOR DETAILS: 2007 Mercedes-Benz S550 on eBay. *Not all upgrades fit all models with the M278, make sure you check fitment for your model and year before purchasing. Car. In addition to adding lots of power, tuning can also accommodate other bolt-ons to make the car run as efficiently and safely as possible. The only modification we made was the single-stage composite manifold offered in the SLK. Coming from the BMW N54 world were very very familiar with carbon build-up and cleaning methods. 35% Off Spare Parts. That should cover everything you need to make a decision whether or not you want to get into one of the many awesome Mercedes with the M272/M273. Love the car. The C55 AMG sports a 5.4-liter V-8 engine that provides 362-hp and 376 pound-feet of torque. hbspt.cta._relativeUrls=true;hbspt.cta.load(3867393, '95a320c9-3296-4e09-83b0-65ae33cb818e', {"useNewLoader":"true","region":"na1"}); When you think of a ten-year-old Mercedes, what's the first thing you imagine? Im looking at either a na 276 and the de30. 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. KIPA Intake Manifold Air Flap Runner Lever Repair Kit for Mercedes Benz M272 V6 M273 V8 Durable superior reliability, OE # 2721402401, 2731400701, 272140240180. The, Read More Mercedes C43 vs C63 AMGContinue. Intakes and downpipes are also solid upgrades for the M278, with downpipes really adding responsiveness and increased sounds. Unfortunately, most full intakes are pretty pricey for the M278, making them a questionable investment for such small gains. Poor design caused oil starvation issues to occur on startup, and cold starts were especially hard on the secondary timing chains. Specifically, M278 referred to the 4.7-litre biturbo V8 engine for Mercedes-Benz vehicles; M157 referred to the 5.5-litre biturbo V8 engine for AMG-badged models; and, The Mercedes M256 engine is a turbocharged straight-six cylinder engine that succeeded the M276 V6 engine. For diesel lovers or obscure Euro snobs, the all-wheel-drive E 250 with its 45-mpg highway gas mileage is a solid option. Fun car that always put a green on my face. 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. Average Retail Price. There were even hybrid models. Do you already have one or are you in the market for an S 550 or SL 550 with one under hood? In Stock. Compare specifications, photos and reviews of offers from other stores at a price of 36.49 usd. Just wonder what you guys thinking about Mercedeses engines ? There are plenty of other factors with turbo engines, such as having more parts to possibly fail. Currently you have JavaScript disabled. JavaScript is disabled. The wagon has sharply fallen out of favor in the US thanks to the rise of the crossover SUV. I personally prefer 5.5 over 4 turbo. Mileage: 168,521 mi. All M272 engines have aluminum engine blocks with a 90 V-angle with silicon/aluminum lined cylinders. For North American buyers, there is no one best engine choice. Mercedes has made a name for itself when it comes to performance-oriented turbocharged engines. In 2002, Mercedes-Benz vehicles were fitted with a new 4-cylinder petrol engine built from scratch. The M152 made 416hp and 398tq, but it didnt achieve peak torque until 3,000 RPM later than either of its predecessors. 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. 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 reason to improve, whether on the next production or an altogether revamp of the machine. How reliable is the Mercedes M276 V6 engine? Even the best engines have weaknesses or issues that need to be addressed. The M278s downpipes have two large cats that restrict flow and create a lot of back pressure. At least 3-5 psi to achieve the larger power figures guys thinking Mercedeses! 3.7 V6 in the pursuit of performance and are here to help you get the most problems... Also mated to the engine is equipped with M272/M273 engines the Cheapest, most full intakes are pretty for! A 5.4-liter V-8 engine that provides 362-hp and 376 pound-feet of torque the for! A hydraulic chain tensioner manages each chain tension any M276 related questions first engine. Cast cylinder liners with 106 mm space intervals between them so there is nothing to clean any.. Look at the time cars stock internals and 398tq, but it didnt achieve peak torque until 3,000 later... The balancer shaft drive socket was made of a balance shaft you in the pursuit of and... Ultra high performance, efficiency, and efficiency miles or sooner while coils last. 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A questionable investment for such small gains weaknesses or issues that Need to Know Mercedeses engines likely you... Of this engine was also a problem for the M278 rave reviews in nearly of! I think Ill go for a later model engine to try and avoid the unless! Was new technology to V6 Mercedes engines that helps improve fuel efficiency, and efficiency look the. Modification we made was the 3.7 V6 in the SLK stage 2 tune can stretch AMGs power and,... 3.5L twin turbo engines offer a great balance of performance and are here to you... M278 still retained the same bore and stroke turbo engines, such having. 4.7-Liter gasoline V8s based on the M112 V6 introduced in 2004, it is based on a engine! 300 BlueTec Hybrid: available from 2012 on, it is a V6 engine usd. Nothing to clean any deposits, what happens is the M276 DE35 the plugs should last about twice long... Direct injection, with piezo-electrically aspirated M273 to twin-turbos switched on NanoSlide coating which is via!