Triumph Dolomite MOT reliability

Triumph Dolomites passed their MOT first time 79% of the time across 200 tests in 2025. 1,034 are still licensed in Great Britain.

First-time pass rate

79%

MOTs analysed

200

Still licensed (GB)

1,034

Body type

Sedan

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

1978 petrol

24 MOTs

These figures come from 24 MOT tests. That's a fairly small number of cars, so they may not be typical of these cars as a whole.

Passed first time 83%. Typical mileage 57,521 (most between 41,431 and 70,786).

2005: 66% → 2006: 62% → 2007: 60% → 2008: 50% → 2009: 57% → 2010: 56% → 2011: 59% → 2012: 52% → 2013: 64% → 2014: 61% → 2015: 67% → 2016: 66% → 2017: 68% → 2018: 73% → 2019: 81% → 2020: 74% → 2021: 84% → 2022: 77% → 2023: 83% → 2024: 70% → 2025: 83%

Most common failures

Non catalyst emissions: emissions carbon monoxide content excessive (12.5%)
Ball joint dust cover missing (4.2%)
Washers: provides insufficient washer liquid (4.2%)

Where 1978 Dolomites fail

Exhaust, emissions & leaks

12.5%

Suspension & axles

4.2%

Visibility & wipers

4.2%

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.