Used car guide

2006 Proton Jumbuck: common problems and what to check

What gets flagged at MOT on 2006 Proton Jumbucks, from 145 tests in 2025, plus known faults and what to look at before you buy one.

Small sample: only 145 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.

145MOT tests in 2025
57%pass first time (all 2006 cars: 57%)
3,400typical miles a year
2.2×the usual rate for exhaust system

What stands out

Parts flagged at MOT more often on 2006 Proton Jumbucks than on all cars registered in 2006.

  • Exhaust system2.2× usual
    Proton Jumbuck
    20.7% All 2006 cars
    9.4%

    Failed outright at MOT: 8.3%, against 2.4% of all 2006 cars. The rest were advisories or minor defects.

    Rough price £100–£500 (pipe or section) ClickMechanic

    At the viewing: Listen for blowing or rattling from underneath at idle, and look for black soot around joints.

By area

The share of 2006 Proton Jumbuck MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    35% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

  • Brakes
    34% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Lights and electrics
    29% of testsRough price £10–£80

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

  • Oil and fluid leaks
    26% of testsRough price £80–£600

    At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

  • Exhaust and emissions
    26% of testsRough price £100–£1,200

    At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for engine or DPF warning lights.

  • Tyres
    22% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

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Other years

YearMOT testsMost flagged
2004134Suspension 42%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2006 Proton Jumbucks registered in 2006. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score