MOT Intelligence
Bmw MOT Failures & Common Issues
The components UK cars most commonly fail their MOT on, plus the known issues to watch for on a Bmw. Check any car's full MOT history free in seconds.
~76%
Avg Pass Rate (UK)
~1.4
Avg Failures/Test (UK)
~2.1
Avg Advisories (UK)
Most Common MOT Failure Categories
Typical across all UK cars — a useful guide to what to check first.
Lighting
31%
LOW
Tyres
22%
HIGH
Brakes
18%
HIGH
Suspension
14%
MEDIUM
Emissions
9%
MEDIUM
Steering
6%
HIGH
Common Issues — Bmw
Coolant system / water pump failureHIGH
£300–£800 · Common on N-series engines
Petrol2006–2016
Timing chain stretch (N47 diesel)HIGH
£1,000–£2,500 · Common on 2007–2014 2.0d
Diesel1.9L–2.1L2007–2014
Timing chain failure (N20 2.0 petrol)HIGH
£1,000–£2,500 · Known on N20 2.0 turbo petrol
Petrol1.9L–2.0L2011–2017
Timing chain & swirl-flap wear (N57 3.0d)HIGH
£1,500–£3,500 · On N57 3.0 straight-six diesels
Diesel2.9L–3.1L2008–2016
Oil consumption & timing chain (N63 4.4 V8)HIGH
£2,000–£6,000 · Known on N63 twin-turbo V8 petrol
Petrol4.3L–4.5L
Rear subframe mounting cracks (E46)HIGH
£500–£1,500 · Boot-floor/subframe cracking on E46 3 Series
3 SERIES–2006
VANOS actuator wearMEDIUM
£200–£600 · Common on N52/N54 6-cyl
Petrol2.9L+
EGR cooler / DPF blockageMEDIUM
£300–£900 · Common on diesel with low-mileage urban use
Diesel2010–now
ZF 8-speed auto mechatronic sleeve leakMEDIUM
£250–£600 · Occasional on auto models
Auto / DSG2009–now
Dual-mass flywheel / clutch wearMEDIUM
£600–£1,200 · Wear item on manual diesels
DieselManual
High-voltage battery degradationMEDIUM
Range loss over time · Gradual on older EVs
Electric
EGR cooler coolant leak (B47 2.0d)MEDIUM
£400–£1,000 · Subject of a safety recall on some B47 diesels
Diesel1.9L–2.1L2014–now
High-pressure fuel pump failure (N54/N55)MEDIUM
£500–£1,200 · Known on N54/N55 turbo straight-six petrol
Petrol2.9L–3.1L2007–2016
Cooling system failure (expansion tank, water pump, thermostat)MEDIUM
£250–£700 · Plastic cooling parts fail with age on 6-cyl petrol BMWs
Petrol–2013
Based on commonly reported faults for this make/model. Individual vehicles vary — run a check for the full MOT and mileage history of a specific car.
Pre-Purchase Inspection Checklist
Check all lights are operational before the test drive
Inspect tyre tread depth on all four corners
Test brake pedal feel and stopping performance
Listen for suspension knocks over speed bumps
Request the full MOT history from the seller (or run a free check here)
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