TOP 5 of the best Mercedes engines

TOP 5 of the best Mercedes engines


Mercedes is not only a producer of luxury cars, but also very durable engines that cover millions of kilometers without major problems. Which of them can still be found in models available on the market and is the most durable of all produced by the Stuttgart brand?

Mercedes M271 (1.6 / 1.8)

It’s a basic, solid engine. It has two generations – the first M271 (2002-2011) was able to increase 1.6 / 1.8 with a compressor and direct fuel injection. When the M271 Evo (2009-2015) came out, the exhaust was connected directly to the turbo charger. These engines get very good reviews not only from drivers, but also from mechanics who praise their dynamics, durability and supply of spare parts. The downside is the operation of the timing chain and timing belt replacements, the repair of which ranges from PLN 1,500 to PLN 3,000.

Mercedes OM646 (2.1 CDI)

It is a four cylinder turbo diesel. It has a Common Rail, EGR type power supply, DPF filter and other modern equipment. Their standard construction means that the motors can be used for years. The engines are designated as 2.1 or 2.2, offering from 88 hp and 220 Nm to 170 hp and 400 Nm. In terms of maintenance, the good news is a good supply of replacements, thanks to which individual maintenance is not expensive.

Mercedes M112 (2.4 / 2.6 / 2.8 / 3.2 / 3.7 V6)

It is the first V6 engine in the history of Mercedes. Powerful and durable construction, closely related to the V8 unit marked with the number M113. Unfortunately, both of these families were under the hood of cars, released in a period that is not ideal for the brand – electronic equipment failed many times, there were problems with the automatic transmission, and even rust set them. The M112 was found in many Mercedes cars, produced between 1997 and 2006.

Mercedes OM612 (2.7 CDI)

This engine was created by adding one cylinder to the OM611, Mercedes’ first Common Rail diesel. Without a problem, he got a mileage of more than half a million kilometers. The worst news is the fact that many cars with this engine have their best times behind them and now require a significant investment.

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OM612 DE 30 LA had an increased capacity (up to three liters) and produced 231 HP and 540 Nm. The downside is the cooling system of the OM612 engines – it is important to check its condition regularly against overheating and possible head breakage (the cost of repairs is calculated in the thousands). The good news is that they are easy to build, making access to the converters easier and more efficient.

Mercedes OM642 (3.0 V6 CDI)

Looking for a modern Mercedes with a nice and powerful diesel? Note the engines marked with the number 0M642. However, it requires attention and, unfortunately, an expensive maintenance service. If you are planning to buy a used Mercedes car with the OM642 engine, you must carefully check its mileage and documented service history. The best engines are said to have been released after 2010.

Preparation of the article: Mercedes Warsaw MB Motors showroom