Mercedes-Benz B-Class (W246) Problems by Year
A practical, high-roof alternative to the A-Class. Very sensible family transport, but shares the same dual-clutch transmission (DCT) and diesel emissions risks as the W176 A-Class.
Select a year below to see the specific problems affecting that model year, with estimated repair costs and severity ratings.
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Year Periods
3
Known Issues
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Serious Faults
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Moderate Issues
Select a Year Period
Browse Mercedes-Benz B-Class (W246) in our Directory
View MOT history, registration data, and reliability scores for the Mercedes-Benz Mercedes-Benz B-Class (W246).
View Mercedes-Benz B-Class (W246) DirectoryBuying Tips for the Mercedes-Benz B-Class (W246)
- ✓Check the 7G-DCT gearbox for juddering in stop-start traffic; fluid changes every 3 years/31,000 miles are vital
- ✓Look out for water ingress in the boot, often caused by failing rear air vent seals behind the bumper
- ✓Ensure the diesel variants (if mainly used in town) have no AdBlue or DPF warnings