Is a Used Mercedes Diesel Engine Worth Buying in 2026? What UK Buyers Need to Know

Engine Finders ad comparing Mercedes OM651 vs OM654 diesel engines: pricing ranges, timing chain risks, Euro 5/6 compliance, and verified used engine checks

Over 68% of UK Mercedes diesel engine replacements in 2025 involved the OM651 2.1-litre four-cylinder due to timing chain and crankshaft bearing failures. If you are considering a replacement, buying a used Mercedes diesel engine requires strict verification of service history and engine codes to avoid repeating these costly mistakes. Quick Summary: Key Facts for […]