Chevrolet Gmc Blazer MOT reliability

Chevrolet Gmc Blazers passed their MOT first time 70% of the time across 56 tests in 2025. 43 are still licensed in Great Britain.

These figures come from 56 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

70%

MOTs analysed

56

Still licensed (GB)

43

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

1999 petrol

13 MOTs

These figures come from only 13 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 62%. Typical mileage 128,257 (most between 119,236 and 159,438).

2005: 79% → 2006: 61% → 2007: 62% → 2008: 61% → 2009: 55% → 2010: 51% → 2011: 54% → 2012: 60% → 2013: 48% → 2014: 62% → 2015: 55% → 2016: 65% → 2017: 63% → 2018: 64% → 2019: 76% → 2020: 85% → 2021: 62% → 2022: 78% → 2023: 52% → 2024: 67% → 2025: 62%

Most common failures

Ball joint excessively worn (15.4%)
Position lamp: not working (7.7%)
Ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (7.7%)
Brake discs: significantly and obviously worn (7.7%)
Switch: inoperative (7.7%)

1999 diesel

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 122,105 (most between 122,069 and 122,141).

2005: 100% → 2006: 75% → 2007: 50% → 2008: 40% → 2009: 60% → 2010: 100% → 2011: 100% → 2012: 100% → 2013: 67% → 2014: 75% → 2015: 67% → 2016: 0% → 2017: 100% → 2018: 67% → 2019: 67% → 2020: 50% → 2021: 33% → 2022: 100% → 2023: 100% → 2024: 100% → 2025: 50%

Most common failures

Malfunction indicator lamp: inoperative or indicates a malfunction (50.0%)
Pins and bushes: pin or bush excessively worn (50.0%)
Rbt (sp): efficiency below requirements (50.0%)
Chassis condition: or chassis has excessive corrosion, seriously affecting its strength within 30cm of a body mounting (50.0%)

Where 1999 Blazers fail

Body, structure & corrosion

15.4%

Brakes

15.4%

Lights & electrics

15.4%

Suspension & axles

15.4%

Steering

7.7%

Exhaust, emissions & leaks

7.7%

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.