2005–2011 Mercedes-Benz B-Class (W245)
Browse our directory of 2005–2011 Mercedes-Benz B-Class (W245) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2005–2011 Mercedes-Benz B-Class (W245) has 3 known issues. 1 of these are classified as serious faults that could be expensive to repair. 2 are moderate concerns worth inspecting before purchase.
CVT gearbox failure
SeriousThe CVT transmission can suffer from worn variators, overheating and mechatronic unit failures. Jerky acceleration and whining noises are common. Regular fluid changes are critical to延 life.
Symptoms: Whining noise from gearbox, Jerky acceleration...
Est. repair cost: £800–£2,500
DPF blockage (diesel models)
ModerateThe diesel particulate filter clogs quickly on short urban journeys, triggering limp mode. Regular motorway driving is needed for passive regeneration.
Symptoms: Limp mode, DPF warning light...
Est. repair cost: £150–£500
Seat belt webbing fraying
ModerateThe seat belt webbing on B-Class models is prone to premature fraying at the edges, which is an MOT failure. Replacement belts are surprisingly expensive.
Symptoms: Visible fraying on seat belt edges, MOT advisory or failure for seat belt condition
Est. repair cost: £150–£250 per belt
Buying Tips for the 2005–2011 Mercedes-Benz B-Class (W245)
- ✓Check the CVT gearbox for smooth pull-away and whining noises; fluid changes are essential.
- ✓Diesel models used for short trips will clog the DPF — look for limp mode history.
- ✓Inspect seat belt webbing for fraying; replacements are expensive.
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