BMW and Volkswagen are known for their diesel engines, especially the latter with the infamous ‘dieselgate’ scandal. On the other hand, you’d most likely refer to Mercedes-Benz as a luxury car, and these expensive models typically shy away from rough and noisy diesel engines. However, did you know that the German luxury brand was actually known for its inline-six diesel engine for a time? This diesel engine is the OM606, which arrived in 1993 and is a three-liter diesel
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