When buying a used Mercedes-Benz E-Class E250 2014 (207 / 212 / facelift), the most frequently mentioned issue is cooling system problems (thermostat/water pump). Also, oil consumption and leaks (gaskets) are commonly reported.
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
Cooling circuit failures affecting the thermostat and water pump are reported. A faulty thermostat or less efficient pump can cause short-term overheating, risking cylinder head and engine durability.
Cooling
Oil consumption and leaks are frequently reported on the M274 engine: valve cover gasket and front crankshaft seal leaks are reported by many users. This may require more frequent oil top-ups and checks to prevent major damage.
Engine Internal
In some early M274 engines, camshaft phasers can break and camshaft position sensors can fail, causing diagnostic errors, rough running, and the check engine light to come on.
Engine Internal
Many M274 engines report timing chain wear, stretch, and tensioner issues. This can cause metallic noises during startup or idle. Chain replacement is recommended around 80,000-120,000 km.
Timing chain
Problems with turbocharger and injection components are reported on M274 turbo petrol engines; turbo actuator, sensors, and piezo injectors may wear, leading to performance loss and increased fuel consumption.
Turbo
Same trim, different year
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.