"Is the E Serisi E300 reliable, and what should you check?"
When buying a used Mercedes-Benz E-Class E300 2015 (207 / 212 / Facelift), the most frequently mentioned issue is oil leaks from the oil cooler/filter housing seals. Additionally, turbo/intake flap sticking is also commonly reported.
Engines available in this year
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
Oil leaks from oil cooler/filter housing seals
Often reported
On the W212 E-Class with the OM642 engine, recurring oil leaks from the oil cooler/oil filter housing seals can occur; this may cause stains under the vehicle, smoke from the engine bay, and a burning oil smell.
Engine Bay
Turbo/intake flap sticking
Often reported
The intake manifold of the OM642 engine uses swirl/tumble flaps and control systems; these can stick or break due to carbon deposits or brittle plastic parts.
Engine Bay
Clogged EGR / EGR pipes and related problems
Often reported
A frequently reported issue by E 300 CDI owners is soot and oil buildup in the EGR valve and exhaust gas recirculation pipe. This can lead to EGR valve failures, performance loss, inefficient DPF regenerations, and a smoky smell.
Exhaust Emissions
Faulty or expensive piezo injectors
Often reported
The piezo injectors in the 3.0 CDI are sensitive to fuel quality and can be costly to repair or replace if they fail.
Fuel System
Turbocharger variable geometry sticking
Often reported
On the 3.0 V6 CDI, the variable geometry system (VGT/VNT) of the turbocharger often sticks or loses effectiveness due to soot and dirt buildup, resulting in power loss, surging, and the check engine light coming on.
What should I look for when buying a Mercedes-Benz E-Class E300?+
When buying a 2015 E300, check the service history, perform a test drive, and look for engine/transmission warnings. The most commonly reported issues are: oil leaks from oil cooler/filter housing seals; turbo/intake flap sticking; clogged EGR / EGR pipes and related problems.
What are the chronic problems of the Mercedes-Benz E-Class E300?+
The most commonly reported issues are: oil leaks from oil cooler/filter housing seals; turbo/intake flap sticking; clogged EGR / EGR pipes and related problems.
Is the Mercedes-Benz E-Class E300 reliable?+
Instead of a simple yes or no, it's best to consider the proven pros and cons together. This page lists 5 verified findings.
How does Carbeak collect data?+
The cards on this page are derived from the Difetti fault database records; compatibility between the source vehicle and target vehicle is verified by brand, fuel type, engine, and generation. Topics with insufficient evidence are not shown.
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.
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