Photo: Alexander Migl, CC BY-SA 4.0
Mercedes Benz
Gla 180 Amg Line Premium + A
1,296 MOT tests analysed. sits above the UK fleet average — here's where Gla 180 Amg Line Premium + As pass, fail, and end up on the retest sheet.
That's 13.3 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
90.8%
Pass-after-fix
2.2%
Fail
6.7%
Avg miles
25,398
Pass + Pass-after-fix + Fail = 100%
Petrol cars first registered from January 2006 meet Euro 4 — compliant in London ULEZ, Birmingham CAZ, Bristol CAZ, and Glasgow LEZ.
The picture
Gla 180 Amg Line Premium + A: a strong MOT record by UK norms
Across 1,296 MOT tests, the Gla 180 Amg Line Premium + A returns 90.8% first-time pass — comfortably ahead of the UK fleet average. The single most-logged Major fail is a seriously damaged tyre. A defective wiper blade and windscreen damage round out the top three. Average tested mileage sits at 25,398, which is the lens to read those failure rankings through. If you own one and the next test is close, the ranked list below is a sensible pre-test checklist.
Top ten reasons for rejection.
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- 01
A tyre seriously damaged
36 occurrences · 2.8% of tests
- 02
Wiper blade defective
26 occurrences · 2.0% of tests
- 03
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
19 occurrences · 1.5% of tests
- 04
a brake lining or pad worn below 1.5mm
8 occurrences · 0.6% of tests
- 05
Tyre tread depth not in accordance with the requirements
7 occurrences · 0.5% of tests
- 06
Wiper blade missing or obviously not clearing the windscreen
6 occurrences · 0.5% of tests
- 07
A tyre cords visible or damaged
5 occurrences · 0.4% of tests
- 08
An SRS malfunction indicator lamp (MIL) indicates a system malfunction
5 occurrences · 0.4% of tests
- 09
Engine MIL illuminated indicating a malfunction
2 occurrences · 0.2% of tests
- 10
Seat belt buckle missing, damaged or not functioning as intended
2 occurrences · 0.2% of tests
Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.
Worst-case fix budget · top 3 failures
£160–£300
If every one of this Gla 180 Amg Line Premium + A's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →
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Tools that pre-empt a retest.
Picked against this car's top failure patterns. Affiliate links to Amazon UK — we earn a small cut at no cost to you. Disclosed up-front, doesn't shape the data.
Item 01 · Amazon UK
Bosch Aerotwin wiper blades
Cheap wipers fail the test on smear streaks. Bosch Aerotwins last a winter and clear a screen properly.
Search Amazon UK
Item 02 · Amazon UK
Brake pad measurement gauge
Testers fail pads under 1.5mm. A wear gauge tells you if you've got two months left or two weeks.
Search Amazon UK
Item 03 · Amazon UK
Digital tyre-tread depth gauge
Five quid for a gauge beats £150 for a retest. UK MOT minimum is 1.6mm — most testers fail anything below 2mm to be safe.
Search Amazon UK
My Motor World · affiliate
Parts & supplies for this fix
Affiliate links — small commission, no extra cost to you.
Click Mechanic · affiliate
Book a mobile mechanic
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Mobile mechanic · UK-wide
Book a mechanic at your door.
Fixed-price quotes upfront. No garage needed. Click Mechanic sends a vetted local mechanic to you — home, work, or roadside.
Buying or keeping a Gla 180 Amg Line Premium + A?
Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.
If you own a Gla 180 Amg Line Premium + A and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.