Mercedes GLA
Reliability, estimated running costs, and MOT data across 7 model years from 129,992 MOT tests in 2024.
Avg Pass Rate
89%
Total Tests
129,992
Highest Pass Rate
2020 (92%)
Years Covered
7
About the Mercedes GLA
The Mercedes GLA was MOT tested 129,992 times in 2024 (DVSA data, retests included) across 7 model years (2014 to 2020), with an average pass rate of 89%. That's comfortably above the average of 82% across all models in our data. Our records list petrol and diesel versions.
Best and Worst Years
Of the years with at least 100 tests, the 2020 model has the highest pass rate at 92% from 2,329 tests. The 2015 model has the lowest at 87%. With just a 5 point gap, pass rates are similar across these years. Newer cars usually pass more often simply because they are younger.
Reliability Trend
The Mercedes GLA has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Mileage Across Years
The oldest model in our data (2014) averages 75,803 miles, while the newest (2020) averages 29,861 miles.
Estimated Running Costs
Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.
Full 2020 detailsHow reliable is the Mercedes GLA?
Mercedes GLA by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
Questions about the Mercedes GLA
Is the Mercedes GLA reliable?
Across its 7 model years in our data (2014 to 2020), the Mercedes GLA averages an 89% MOT pass rate, from 129,992 tests (DVSA MOT data for tests in 2024, retests included). That's 7 points above the average of 82% across all models in the same data. The 2020 model has the highest pass rate of the years with at least 100 tests, at 92%.
Which year Mercedes GLA has the best MOT pass rate?
Of the years with at least 100 tests, the 2020 Mercedes GLA has the highest MOT pass rate at 92%, while the 2015 model has the lowest at 87%, a 5 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.
Are newer Mercedes GLAs more reliable?
The Mercedes GLA has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
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