It is not quite a performance engine, but the stubborn diesel epitomizes reliability. Smokey Nagata had the 2JZ, and Europe had the 1993 Mercedes-Benz OM606 3.0-liter inline-six, capable of 174 hp and 243 lb-ft of torque. Reliability Of The Mercedes-Benz OM651 Engineįrequent glow plug servicing (after every 50,000 miles), faulty fuel injectors, timing chain failures, front valve seal leakageġ994-1996 Mercedes-Benz E 300 Diesel T Wagon, 1997-1999 Mercedes-Benz E 300 Turbodiesel Wagon, 1992-1995 Mercedes-Benz E 300 Diesel Sedan, 1997-1999 Mercedes-Benz S 300 Turbodiesel Sedan Unfortunately, the OM651 also fell victim to timing chain failure, just as its fellow cheaply built power plants of the era. Furthermore, it could have been a more reliable Mercedes product, with regular leaks from front valve seals being a standard feature. The compact design made the block challenging to work on. The Euro 5 emissions problem forced Mercedes to fit environmentally friendly fuel injectors these soon failed on early iterations of the OM651 engine and were hastily replaced with electromagnetic injectors on later variants. There was also the issue of the Euro 5 emissions standard, which Mercedes was determined to pass. The engine's design was, so it could sit both longitudinally and transversely, increasing flexibility. The 2.1-liter iteration produced a maximum of 201 hp. Mercedes released the 2.1-liter inline-four for its A, B, and low-level C-Class models. Head gasket failures, timing chain tensioner failureĢ012-2018 Mercedes-Benz A-Class, 2008-2018 Mercedes-Benz C-Class, 2015-2019 Mercedes-Benz GLCĪlthough Mercedes-Benz is credited today with the world's most powerful four-cylinder engine, the OM651 produced in 2008 is the exact opposite. Mercedes's little cast iron block has gone on to be considered one of the best four-cylinder engines in the world for its durability and efficiency wrapped up in a tiny package. As a result, many C200 models sporting the M111 are still on the market today. What the M111 lacked in performance, it made up for with reliability. As a result, the M111 found itself in the W124 E200, C200, and CLK200 Mercedes models with a maximum output of 189 hp and 199 lb-ft of torque, as featured on the gutless C200 Kompresser sports cars. Mercedes-Benz created the M111 in 1992 the 2.0-liter four-cylinder had the impossible task of replacing the ever-dependable Mercedes OM617. Oil leakage from cam plugs, frequent breaking of the intake manifold plastic cover, timing chain problems due to balance shaft wear However, worst of all, they even ruined the glorious S-Class with the unruly M272. Mercedes-Benz had to fight off a class action lawsuit in 2010 relating to faulty components within the M272 V6 engine. As a result, permanent check engine lights and misfires are standard on M272-powered cars. Timing chain issues causing premature wear to the surrounding components occurred in as little as 100,000 miles.
In the early 2000s, Mercedes-Benz was undergoing a reliability crisis, and the cheaply built M272 engine block only worsened things. Producing a maximum of 201 hp and 181 lb-ft of torque, the DOHC V6 was your typical A to B power plant, or it was supposed to be. Produced between 2004-2017 to replace the M112 V6, Mercedes unleashed the entry-level 2.5-liter M272 V6 found on base-level cars such as the C230 and E230 vehicles. Timing chain and fuel pump failure due to lack of periodic maintenanceĢ005-2011 Mercedes-Benz C-Class, 2005-2011 Mercedes-Benz E-Class Reliability Of Mercedes-Benz OM617 Engine This old Merc crossed the auction block with a whopping 782,000 miles on the clock, thanks to the OM617 housed within. A recent testament to Mercedes-Benz's reliability is the 1979 Mercedes-Benz 300TD wagon that went up for sale in recent years. Mercedes-Benz produced 2.7 million OM617 power plants over 17 years to cement the five-cylinder's stubborn reputation as one of the best diesel engines in the world. A five-cylinder engine to replace the outgoing OM616 quickly garnered a reputation for reliability, with many fleet vehicles approaching 620,000 miles as time passed. Produced between 1974-1991, Mercedes-Benz loaded their 300D with a cast iron 3.0-liter diesel engine known as the OM617.
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