Gmc Sierra MOT reliability

Gmc Sierras passed their MOT first time 79% of the time across 67 tests in 2025.

Example photo of a Gmc Sierra — Photo: Ethan Llamas · CC BY-SA 4.0 · Wikimedia Commons

These figures come from 67 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

79%

MOTs analysed

67

Still licensed (GB)

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Body type

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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

2019 petrol

4 MOTs

These figures come from only 4 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 100%. Typical mileage 37,000 (most between 7,000 and 52,000).

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

Combined model spellings: SIERRA, UNCLASSIFIED. Mileage percentiles and individual failure rankings are unavailable for this combined group.

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.