Ford B-Max (B299)
The Ford B-Max is a brilliantly clever mini-MPV famous for its sliding rear doors and complete absence of a B-pillar, making rear-seat access incredibly easy for families. Mechanically, it shares much of its underpinnings with the Mk7 Fiesta, meaning it drives very well and is cheap to maintain. Positioned as an ultra-practical urban family car, it offers excellent visibility and moderate insurance groups. However, the PowerShift automatic gearbox and the 1.0 EcoBoost wet-belt engine are the two big risks that completely define the used-buy, making it best suited for buyers who choose a manual petrol model.
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Common Faults & Reliability
These are the most common documented problems for the Ford B-Max (B299), sorted by their typical impact and frequency.
PowerShift Gearbox Judder and Failure
high severityThe dry-clutch 6DCT250 PowerShift automatic is notoriously problematic. Juddering on pull-away, hesitation during gear changes and eventual clutch or mechatronic failure are common, especially on cars used in stop-start urban traffic.
Sliding Door Mechanism and Sensor Faults
medium severityThe innovative sliding rear doors can fail to lock properly, trigger dashboard warnings, or become difficult to close. Faulty door latches, sensor failures or worn wiring in the door channels are the usual culprits.
1.0 EcoBoost Wet Belt and Coolant Leaks
high severityThe 1.0 EcoBoost engine uses an oil-bath timing belt that degrades over time. The cooling system is also prone to leaks from the expansion tank and hoses. Left unfixed, coolant loss can lead to overheating and cylinder head damage.
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