Mercedes Benz Gla (2017)
2017 Mercedes Benz Gla
CarHunch analysed 13,146 real MOT records for the 2017 Mercedes Benz Gla.
Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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The 2017 Mercedes-Benz GLA passes its MOT first time in 89.8% of cases, well above the UK average of 80%, which is a genuine strength—but one in five of these cars (21.2%) have recorded a dangerous defect at some point, so mechanical issues do exist beneath the surface. Petrol and diesel variants perform almost identically, both around 90% pass rate, so fuel choice won't sway reliability here.
These cars are running at a median of just 43,622 miles, still relatively low for a seven-year-old vehicle, which explains some of the strong pass performance. The average car still racks up 0.81 failures and 5.7 advisories per test, suggesting wear items and minor niggles are routine—typical for an ageing Mercedes. Before buying, budget for those advisories (often suspension, lights, and brake components on this model) and get a pre-purchase inspection to rule out any hidden dangerous defects.
The 2017 Mercedes Benz Gla passes its MOT first time at roughly the UK average rate (89.8%) — solid but worth checking this vehicle's history carefully.
These stats describe 13,146 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.
What tends to go wrong
Across 13,146 vehicles — figures show how many had each issue flagged at least once in their MOT history.
Data covers a 3-year window centred on 2017.
See this vehicle's full MOT history & AI hunches
Spot recurring advisories, hidden issues, and how it compares to 13,146 Mercedes Benz Gla cars.
Before you buy a 2017 Mercedes Benz Gla
Based on MOT data from 13,146 vehicles — here's what to check.
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Check the full MOT history.
21.2% of these vehicles have had a dangerous defect recorded -
recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle. -
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Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price.
Inspection
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Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically.
History
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Diesel (78%) | 10,282 | 89.6% | 0.83 |
| Petrol (22%) | 2,863 | 90.5% | 0.75 |
Colour Breakdown
Based on 66,523 Mercedes Benz Gla vehicles registered in the UK — across all years. From DVLA registration records.
Mileage Distribution
Most 2017 Mercedes Benz Gla vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2017 Mercedes Benz Gla vehicles fall between 33,770 and 55,638 miles.
2017 Mercedes Benz Gla — Still on the Road
Almost all 2017 Mercedes Benz Glas are still on the road.
Strong survival — 12,137 vehicles still getting MOTs in 2025, 97% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2020–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.
MOT History Averages
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Compare with another model
See how the 2017 Mercedes Benz Gla stacks up against a rival.