Mercedes-Benz B-Class (W245) Problems by Year
The Mercedes-Benz B-Class (W245) is a practical, high-roof family hatchback that shares much of its clever sandwich-floor mechanicals with the A-Class W169. It was positioned as a premium mini-MPV, offering vast interior space and a raised driving position without the bulky footprint of an SUV. In the UK, it makes for sensible and spacious family transport with moderate insurance groups, though running costs can spike if major repairs are needed. While generally reliable, the CVT automatic gearbox, diesel DPF clogging, and seat belt webbing wear are the main traps, making it best suited for older drivers or small families prioritizing comfort and space.
Select a year below to see the specific problems affecting that model year, with estimated repair costs and severity ratings.
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Browse Mercedes-Benz B-Class (W245) in our Directory
View MOT history, registration data, and reliability scores for the Mercedes-Benz Mercedes-Benz B-Class (W245).
View Mercedes-Benz B-Class (W245) DirectoryBuying Tips for the Mercedes-Benz B-Class (W245)
- ✓If buying the CVT 'Autotronic' automatic, verify it has had fluid changes every 40,000 miles; shuddering or hesitations often mean terminal valve body failure.
- ✓Inspect the bottom edges of the doors and the tailgate for rust, as the W245 is from an era where Mercedes still struggled with paint corrosion.
- ✓Check the seat belts; they are notorious for fraying and becoming slow to retract, which is an instant MOT failure.
- ✓On diesel models, ensure the DPF is not clogged from short urban journeys; look out for warning lights or a lack of power.
- ✓Listen for clicking noises from the front driveshafts when turning tightly, which indicates worn CV joints.
- ✓Test the air conditioning to ensure it blows cold; the condensers are mounted low at the front and frequently suffer stone damage.