On this page you can browse all Mercedes-Benz cars with diesel engines in Montenegro. Mercedes diesels have long been valued for their longevity, low fuel consumption and comfortable long-distance driving, making them a popular choice across every class — from the compact A-Class to the flagship S-Class.
OM651, OM654, OM656, OM642
Main engines
C220d, E220d, GLC 220d, GLE 350d
Popular models
5–7 l/100 km combined
Typical fuel consumption
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OM651 (2.1/2.2 CDI) is a long-proven workhorse — used in the C, E, ML, GLK, Vito and many other models in 180/200/220/250 CDI versions with 136–204 HP. OM654 (2.0 CDI, from 2016) is the next generation with an aluminium block, used as 200d, 220d and 300d with 150–265 HP. OM656 (3.0 inline six) replaces the older V6 OM642 in 350d and 400d versions with 286–340 HP. The older OM642 (3.0 V6) is still found on the used SUV market.
With OM651 engines, pay attention to the injectors (often leaks on the upper part of the engine), the turbo and the balance chain. The OM642 V6 has a known issue with the vacuum pump and engine oil cooler — check whether preventive replacement has been done. The AdBlue system (on Euro 6/6d vehicles) can be expensive to repair — check for fault codes. 7G-Tronic and 9G-Tronic transmissions are reliable with regular oil changes every 60,000 km.
Most diesel Mercedes vehicles in Montenegro are imported from Germany, Slovenia and Italy. The C220d (W204 and W205) is among the most sought-after models, with prices from €8,000 for an older W204 to €25,000+ for a newer W205 with the AMG package. The E220d is popular in the business and family segment. GLC 220d/300d and GLE 350d/400d dominate the premium SUV offer. When importing Euro 6d-Temp and Euro 6d examples, registration is not a problem — older Euro 5 cars carry higher customs duties.
OM654 (2.0 CDI, from 2016) and OM656 (3.0 inline-six) are currently considered the most reliable. OM651 is a proven engine, but older versions should be inspected carefully for injectors and the balance chain.
Yes, on all Euro 6 diesels. AdBlue consumption is around 1.5 l per 1,000 km. The system can show errors if low-quality fluid is used or if a sensor fails — repairs can cost more than €500.
With regular servicing and quality oil, the OM651 easily goes beyond 400,000–500,000 km. The main reasons for premature failures are neglected maintenance, cheap oil and short city trips that damage the DPF.
For drivers who often go to northern Montenegro in winter or drive on rural roads — yes. For coastal cities, the extra fuel consumption (~0.5 l/100 km) and higher used-car price rarely justify it.