Alvis TD21 MOT reliability

Alvis TD21s passed their MOT first time 46% of the time across 39 tests in 2025.

These figures come from 39 MOT tests. That's a fairly small number of cars, so they may not be typical of these cars as a whole.

First-time pass rate

46%

MOTs analysed

39

Still licensed (GB)

–

Body type

Coupe

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

1996 petrol

2 MOTs

These figures come from only 2 MOT tests. 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 50%. Typical mileage 14,046 (most between 14,044 and 14,048).

2022: 100% → 2024: 50% → 2025: 50%

Most common failures

Rbt (sp): efficiency below requirements (50.0%)
Parking (secondary brake performance): on a single line braking system imbalanced across an axle (50.0%)

Where 1996 TD21s fail

Brakes

50.0%

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.