MOT Intelligence
Vauxhall MOT Failures & Common Issues
The components UK cars most commonly fail their MOT on, plus the known issues to watch for on a Vauxhall. 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 — Vauxhall
Timing chain wear (1.4 Turbo)HIGH
£500–£1,200 · Common on 1.4T Astra/Corsa/Mokka
Petrol1.3L–1.4L
Timing chain stretch (1.4 Turbo)HIGH
£600–£1,200 · Common on 1.4 turbo petrol
Petrol1.4L–1.4L
Water pump / thermostat failureMEDIUM
£250–£550 · Common wear item
Petrol
DPF / EGR issues on CDTi dieselMEDIUM
£300–£800 · Common on CDTi diesels
Diesel2010–now
DPF / EGR faults (1.6 CDTi)MEDIUM
£300–£900 · On 1.6 CDTi diesels used for short trips
Diesel1.6L–1.6L
DPF / EGR faults (2.0 CDTi)MEDIUM
£300–£1,000 · On 2.0 CDTi diesels
Diesel1.9L–2.0L
Injector & turbo faults (1.7 CDTi)MEDIUM
£400–£1,200 · On the Isuzu-sourced 1.7 CDTi diesel
Diesel1.6L–1.8L
AdBlue & DPF faults (1.6 BlueHDi)MEDIUM
£300–£1,000 · On post-2014 1.6 BlueHDi diesels
Diesel1.6L–1.6L2014–now
DPF & EGR faults (1.3 CDTi)MEDIUM
£250–£800 · On the 1.3 CDTi (Fiat MultiJet) used for short trips
Diesel1.3L–1.4L
Swirl flaps & DPF faults (1.9 CDTi)MEDIUM
£300–£1,000 · Swirl-flap & DPF issues on the 1.9 CDTi (Z19DT) Astra/Vectra/Zafira
Diesel1.9L–1.9L
Injector & oil-pump faults (1.9 dCi/DTi — F9Q)MEDIUM
£300–£1,500 · Injector wear & oil-pump/starvation risk on the 1.9 dCi (Megane/Laguna/Trafic/Vivaro)
Diesel1.9L–1.9L
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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