Proton Jumbuck

What fails its inspection

Great Britain's MOT record for the 2006 1.5 petrol. 78 of 271 tests failed, 29%.

Better than 37% of 2006 cars. The typical one fails 27%, across 889 models with enough tests behind them to say.

The defects inspectors cite

• The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired
• The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired
• Brake pipe damaged or excessively corroded
• Brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle.
• Exhaust system leaking or insecure
• Lambda coefficient outside the default limits or the range specified by the manufacturer

Where it stands out against its peers

• Exhaust and emissions: failed more often than 98% of 2006 cars — 44% of its 78 failed tests, where an ordinary 2006 car has 13%.
• Seat belts and airbags: failed more often than 94% of 2006 cars — 17% of its 78 failed tests, where an ordinary 2006 car has 2%.

Same model year only, at least 30 peer cars, zeros included. Every car has a worst part; this shows which, and how far from ordinary it is. A high share means more to check, not a verdict.

NHTSA's investigations are American; no European regulator publishes an equivalent record, so this section has nothing to draw on for a European car. There is no European equivalent of the service-bulletin register either.

Before you buy one

Built from what this car fails on, not from general knowledge of the model.

• Suspension — 47% of its failures
  • The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired
• Exhaust and emissions — 44% of its failures
  • Exhaust system leaking or insecure
  • Lambda coefficient outside the default limits or the range specified by the manufacturer
  • Emissions levels exceed the manufacturer's specified limits
• Brakes — 32% of its failures
  • Brake pipe damaged or excessively corroded
• Lights and electrics — 35% of its failures
• Body and structure — 36% of its failures
  • The strength or continuity of the load bearing structure within 30cm of any sub-frame, spring or suspension component mounting (a 'prescribed area') is significantly reduced or inadequately repaired
  • The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired
  • Brake pipe damaged or excessively corroded
• Seat belts and airbags — 17% of its failures
  • The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a 'prescribed area') is significantly reduced or inadequately repaired

When it starts failing

At 80–100k miles this one fails 27% of its inspections, about what an ordinary car of the same age does.

221 British inspections, grouped by the odometer reading recorded at the test.

Half of these have more than 60k miles on them. That is how far people drive this car, not how long it lasts.