IsItAGoodCar
Reliability Guide

Common Problems with the
2012 Ford B-Max (B299)

The B-Max went on UK sale in September 2012 with pillarless sliding rear doors that opened a 1.5-metre gap on each side. It was a Fiesta-based mini-MPV with five-star Euro NCAP safety and a cleverly packaged cabin.

What changed for 2012

  • •Rear sliding doors with no B-pillar, giving a 1.5-metre side opening
  • •1.0 EcoBoost 100 and 125PS, 1.4 90PS and 1.6 105PS petrol engines
  • •1.6 TDCi 95PS diesel and a six-speed Powershift automatic on the 1.6 petrol
  • •Studio, Zetec, Titanium and Titanium X trims, with Active City Stop available

Common MOT watch-outs

  • !Rear sliding door latches failing to hold, which fails the test if a door will not latch securely
  • !Corroded rear brake pipes and rear axle components on early cars
  • !Front suspension drop links and arm bushes worn by urban use
4
Known Issues
2
Serious
2
Moderate
0
Minor

All Known Issues

PowerShift Gearbox Judder and Failure

SeriousGearbox & Transmission

The 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.

Est. Repair Cost: £800-£2,500
Warning Signs:

Judder when pulling away, Hesitation on gear changes, Transmission malfunction warning

What to Inspect:
  • Drive in slow traffic from cold and fully warm
  • Check for smooth reverse engagement
  • Ask for proof of regular gearbox fluid changes
Verified by IsItAGoodCar Research Team

1.0 EcoBoost Wet Belt and Coolant Leaks

SeriousEngine

The 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.

Est. Repair Cost: £400-£4,000
Warning Signs:

Low oil pressure warning, Engine rattle on start-up, Low coolant warning, White smoke from exhaust

What to Inspect:
  • Demand full service history with correct Ford-spec oil
  • Check whether the wet belt has been replaced
  • Inspect coolant level and look for staining
Verified by IsItAGoodCar Research Team

Sliding Door Mechanism and Sensor Faults

ModerateBodywork & Rust

The 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.

Est. Repair Cost: £100-£300
Warning Signs:

Door will not lock properly, Dashboard door ajar warning, Sliding door jamming or scraping noises

What to Inspect:
  • Open and close both sliding doors repeatedly
  • Check that all doors lock and unlock from the fob
  • Inspect the door rails for debris or damage
Verified by IsItAGoodCar Research Team

Electrical Gremlins and Battery Drain

ModerateElectrics & Electronics

The B-Max can develop battery drain issues especially if left unused for a few days. General electrical gremlins include infotainment glitches and heated windscreen failures.

Est. Repair Cost: £80-£400
Warning Signs:

Flat battery after standing, Slow to start, Infotainment screen freezing, Heated windscreen segments failing

What to Inspect:
  • Check battery age and state of charge
  • Test all electrical functions
  • Ask if the car has been left unused for extended periods
Verified by IsItAGoodCar Research Team

Buying Tips for 2012 Ford B-Max (B299)

  • Open and close both sliding doors repeatedly, checking they latch flush without needing a slam
  • Drive a Powershift car from cold in stop-start traffic and reject any judder or hesitation
  • Check the 1.0 EcoBoost for coolant staining and evidence of the correct oil
2013–2014
Check a 2012 Ford B-Max (B299) by Registration