Pass rate
93.8%
Above average — 2.6 pts ahead of the 91.2% that cars this age and mileage manage.
Across 64 recorded tests.
Typical repair bill £55–£138
2021 Mercedes-Benz AMG MOT pass rate
- 2021
- typical 8,465 mi
Only 64 tests of this exact model and year are in the DVSA data, below the 100 we ask for before a page goes in the index. The figures are still shown, because they are the only ones there are.
Most common fault
Tyres
50.0% of faults · 19.8% nationally
mostly tread below the limit, cuts and sidewall bulges.
Which year to buy
- Best 2021 93.8% pass · this year
- Avoid 2021 93.8% pass · this year
Across the 1 years on record, a spread of 0 points. See every year →
- First-attempt pass
- 93.4%
- Typical mileage
- 8k mi
The 2021 Mercedes-Benz AMG MOT pass rate is 93.8% of its MOT tests — 2.6 points ahead of what its age and mileage predict. Tyres is the biggest single reason it fails, at 50.0% of what testers record.
Check your postcode
MOT pass rates are national — type your postcode to see how Mercedes-Benz AMG does in your corner of the country.
Expert verdict
Tyres: 2.5× the national share
Tyres make up 50.0% of everything recorded on the 2021 Mercedes-Benz Amg, against 19.8% nationally — 30.2 points above. Check all four tyres yourself, including the inner shoulders, and look at the date stamp — a tyre can pass on tread and still be six years old.
- When it fails, it costs. Only 0% of this model’s typical repairs come in under £30 in parts — the failures here tend to be the kind that need a garage rather than a bulb.
- Based on a small sample. 64 tests back this page. That is enough to publish and to index, not enough to treat the decimal places as precise — read the pattern, not the second digit.
Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out
Watching a Mercedes-Benz AMG? Get an email when these numbers change .
How does the 2021 Mercedes-Benz AMG compare?
Cars of this age and mileage average 91.2%, so this figure is 2.6 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 93.4%. The median 2021 Mercedes-Benz AMG in this dataset had covered 8,465 mi.
The single most recorded failure item is "Windscreen damaged but not adversely affecting driver's view", noted on 6.25% of tests.
- 64 recorded tests behind this page.
- 93.8% overall pass rate, 93.4% on a first attempt.
- Across every year of the Mercedes-Benz AMG, the average is 93.8% — best year 2021 (93.8%), worst 2021 (93.8%).
Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.
This page's data
- Tests analysed
- 64
- Typical mileage (median)
- 8,465 mi
- Make and model
- Mercedes-Benz AMG
- Updated
- 2026-11-05
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Windscreen
Typically a garage job — get quotes before committing.
Does mileage affect the AMG MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 75% so small gaps stay visible.
Regional pass rates for the AMG
| Region | Tests | Pass rate |
|---|---|---|
| South East | 20 | 100.0% |
| East of England | 16 | 93.8% |
Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.
What fails a 2021 AMG
Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.
A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.
Before your test
Three checks worth doing on a 2021 AMG
These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.
-
Check the windscreen 6.3% of tests
“windscreen damaged”
Check the driver’s side of the screen within the swept area for chips and cracks; anything larger than 10mm in the driver’s central view is a fail. Most chips can be resin-repaired for far less than a new screen.
-
Check the number plates 3.1% of tests
“registration plates missing”
Check both plates are present, legible and correctly spaced, with the postcode of the supplier and the BS AU 145e mark. A private plate in the wrong style is a fail before the car is even looked at.
Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.
What it costs to get a 2021 AMG through its MOT
Across the 4 items that are recorded most often on this model, the average repair comes to £55–£138 — and 0% of those repairs are parts that cost under £30.
- Average repair across the 4 common items
- £55–£138
- Cheapest common item: registration plates missing
- £20–£80
- Dearest common item: windscreen damaged
- £80–£200
- Common items a careful owner can do at home
- 75%
- Repairs that still cost under £30
- 0%
Estimates from typical UK parts prices, weighted by how often each item appears in 64 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →
Compare the 2021 Mercedes-Benz AMG with another year
The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.
Other 2021 cars with a similar record
- Volkswagen T-Roc 93.8%
- Honda Civic 93.8%
- Toyota Prius 93.8%
- Toyota Corolla 93.7%
- Peugeot 108 93.7%
- Kia Stonic Connect 93.7%
Closest pass rates among 2021 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.
The full DVSA record for the 2021 Mercedes-Benz AMG 4 failure items · 6 advisories · 5 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 18 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.
| Category | Items | This car | Nationally | Difference |
|---|---|---|---|---|
| Tyres | 9 | 50.00% | 19.76% | +30.24 |
| Visibility | 4 | 22.20% | 4.97% | +17.23 |
| Non-component advisories | 2 | 11.10% | 4.18% | +6.92 |
| Identification of the vehicle | 2 | 11.10% | 1.76% | +9.34 |
| Brakes | 1 | 5.60% | 20.89% | −15.29 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Windscreen damaged but not adversely affecting driver's view Visibility | Minor | 6.3% | £80–200 |
| Has ply or cords exposed Tyres | Major | 3.1% | £45–95 |
| Registration plates missing Identification of the vehicle | Major | 3.1% | £20–80 |
| Has a cut in excess of the requirements deep enough to reach the ply or cords Tyres | Major | 1.6% | £45–95 |
Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.
What testers noted without failing the car
Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Has a cut in excess of the requirements deep enough to reach the ply or cords Tyres | Advisory | 4.7% | £45–95 |
| Non-component advisories Nail in tyre Non-component advisories | Advisory | 3.1% | £45–95 |
| Brake pads less than 1.5 mm thick Brakes | Advisory | 1.6% | £18–45 |
| Has a bulge, caused by separation or partial failure of its structure Tyres | Advisory | 1.6% | £45–95 |
| Tread depth below requirements of 1.6mm Tyres | Advisory | 1.6% | £45–95 |
| Tread depth tread pattern not visible over the whole tread area when minimum depth required is 1.0mm Tyres | Advisory | 1.6% | £45–95 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 57 | 94.7% | 8,296 mi |
| 30-60k | 6 | 83.3% | 32,607 mi |
| 60-90k | 1 | 100.0% | 66,043 mi |
Source: 64 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.
2021 AMG MOT questions
What is the MOT pass rate for a 2021 Mercedes-Benz AMG?
93.8% of the 64 2021 Mercedes-Benz AMG tests in this dataset passed, against a national average of 91.2% for cars first used in 2021. First-attempt pass rate: 93.4%.
What are the most common MOT failures on a 2021 Mercedes-Benz AMG?
The three most recorded items are windscreen damaged but not adversely affecting driver's view (6.25%), has ply or cords exposed (3.13%), registration plates missing (3.13%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2021 Mercedes-Benz AMG MOT pass rate?
Yes. Cars under 30,000 miles passed 94.7% of the time, falling to 100.0% for those over 120,000 miles. The median 2021 Mercedes-Benz AMG in this dataset had covered 8,465 mi.