Photo: Alexander Migl, CC BY-SA 4.0
Mercedes Benz
3,840 MOT tests analysed. sits above the UK fleet average — here's where Eqc 400 Amg Line Premium 4Ms pass, fail, and end up on the retest sheet.
That's 9.8 points above the UK fleet average across our 1,984 tracked models — a confident result.
Pass
87.3%
Pass-after-fix
1.1%
Fail
11.1%
Avg miles
31,541
Pass + Pass-after-fix + Fail = 100%
Electric and hydrogen vehicles are exempt from all UK clean air zone charges.
Performance by cohort
2 year bands · 3,840 tests
Pass rate is broadly flat across the cohorts — new and old Eqc 400 Amg Line Premium 4M examples track each other at the test bay.
Pass
87.9%
Fail
11.1%
PRS
0.5%
Avg mileage at test
33,859 mi
Pass
87.0%
Fail
11.0%
PRS
1.4%
Avg mileage at test
30,269 mi
Cohort = vehicle's first-registration year band. Same model, different generations of build.
The picture
Across 603 MOT tests, the Eqc 400 Amg Line Premium 4m returns 83.4% first-time pass — above the UK fleet average. The single most-logged Major fail is a tyre with the cords showing. A seriously damaged tyre and windscreen damage round out the top three. Average tested mileage sits at 28,753, 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.
ABI Insurance Group
A high-group car — insurance costs will be significantly above average. Lower groups cost less to insure; UK fleet average is around Group 22.
Source: ABI Group Rating Panel · administered by Thatcham Research · groups cover standard variants; performance trims may sit higher. Browse all insurance groups →
38–46
out of 50
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A tyre cords visible or damaged
235 occurrences · 6.1% of tests
A tyre seriously damaged
122 occurrences · 3.2% of tests
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
50 occurrences · 1.3% of tests
Wiper blade defective
47 occurrences · 1.2% of tests
A tyre seriously damaged
32 occurrences · 0.8% of tests
A suspension pin, bush or joint excessively worn
29 occurrences · 0.8% of tests
Number plate does not conform to the specified requirements
23 occurrences · 0.6% of tests
Wiper blade missing or obviously not clearing the windscreen
11 occurrences · 0.3% of tests
Any fracture or welding defect on a wheel
8 occurrences · 0.2% of tests
Tyre tread depth not in accordance with the requirements
7 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 2 failures
£80–£140
If every one of this Eqc 400 Amg Line Premium 4M'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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Build your own retest budget.
Year-band analysis
First-time MOT pass rate split by registration band. Pass rates barely move across bands here, so the year you buy Mercedes Benz Eqc 400 Amg Line Premium 4M makes little measurable difference to MOT outcomes.
Best band to buy
87.9%
2018–2020 registration
the 2018–2020 band climbs to 87.9% — a 0.8-point improvement. Failures here are mostly wear items: has ply or cords exposed, has a cut in excess of the… — the structural issues that drag down older examples don't appear in the top-10 for this band.
Band to be cautious about
87.0%
2021+ registration
On the 2021-on band, the data shows a 87.0% pass rate against a fleet average of 87.9% on the newer band. The main culprits logged at test: has ply or cords exposed, has a cut in excess of the…, and damaged but not adversely affecting driver's view. Average mileage on test for this band is 30,269 miles — high-mileage wear items are a recurring theme.
Best band to buy: 2018-2020 (87.9% first-time pass). Worst band to avoid: 2021+ (87.0% pass). That's a 0.8-point spread across 2,481 older tests and 1,359 newer ones — year of build makes a material difference on this model.
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
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
Item 02 · 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
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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 an Eqc 400 Amg Line Premium 4M 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.
