Triumph TR4A MOT reliability

Triumph TR4As passed their MOT first time 88% of the time across 169 tests in 2025.

First-time pass rate

88%

MOTs analysed

169

Still licensed (GB)

–

Body type

Convertible

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

2005 petrol

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 100%. Typical mileage 30,171 (most between 30,171 and 30,171).

2021: 50% → 2022: 100% → 2023: 100% → 2024: 100% → 2025: 100%

Most common failures

Looking at a particular car?

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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.