Proton Jumbuck MOT reliability

Proton Jumbucks passed their MOT first time 56% of the time across 462 tests in 2025. 362 are still licensed in Great Britain.

First-time pass rate

56%

MOTs analysed

462

Still licensed (GB)

362

Body type

–

Pass rate by year of first registration

Older cars fail more often, so compare a car with others of the same age. Years with very few MOTs can show extreme pass rates, even 0% or 100%, so give more weight to years with more tests.

In detail:

First registered

2004 petrol

138 MOTs

Passed first time 56%. Typical mileage 68,420 (most between 46,445 and 90,139).

2006: 85% → 2007: 71% → 2008: 65% → 2009: 64% → 2010: 61% → 2011: 58% → 2012: 60% → 2013: 51% → 2014: 52% → 2015: 56% → 2016: 50% → 2017: 53% → 2018: 54% → 2019: 56% → 2020: 56% → 2021: 54% → 2022: 54% → 2023: 56% → 2024: 53% → 2025: 56%

Most common failures

Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits (9.4%)
Prescribed areas: prescribed area strength or continuity significantly reduced (8.0%)
Exhaust system: has a major leak of exhaust gases (8.0%)
Component mounting prescribed areas: prescribed area excessively corroded significantly reducing structural strength (7.2%)
Steering rack: gaiter missing or no longer prevents the ingress of dirt (6.5%)

2004 lpg

1 MOT

These figures come from only 1 MOT test. With so few cars, a single pass or fail changes the percentages a lot, so treat them as a rough guide rather than a true average.

Passed first time 0%. Typical mileage 78,474 (most between 78,474 and 78,474).

2007: 67% → 2008: 67% → 2009: 50% → 2010: 71% → 2011: 57% → 2012: 38% → 2013: 71% → 2014: 43% → 2015: 20% → 2016: 75% → 2017: 0% → 2018: 100% → 2019: 50% → 2020: 50% → 2021: 50% → 2023: 0% → 2024: 0% → 2025: 0%

Most common failures

Catalyst emissions: carbon monoxide content at idle exceeds default limits (100.0%)

Where 2004 Jumbucks fail

Lights & electrics

18.8%

Exhaust, emissions & leaks

17.4%

Suspension & axles

17.4%

Body, structure & corrosion

13.8%

Brakes

13.8%

Steering

8.7%

Seat belts & other equipment

8.0%

Wheels & tyres

5.1%

Looking at a particular car?

See its own MOT history, mileage and red flags, compared with these figures. Free.

Based on 2025 initial MOT tests in DVSA's anonymised MOT dataset (cars and light vans). Contains public sector information licensed under the Open Government Licence v3.0. Model details: Vehicle data by VehiclesDB.