Mercedes-Benz M8
From 313 MOT tests. Above average for its class.
Common MOT failure categories
Pass rate by registration year
What goes wrong?
The most common MOT failure reasons are a suspension pin, bush or joint excessively worn, a spring or spring component fractured or seriously weakened and a suspension joint dust cover missing or no longer prevents the ingress of dirt etc. The top issue, a suspension pin, bush or joint excessively worn, caused 17 failures in 2024. Checking tread depth (1.6mm legal minimum, 3mm recommended) before your test can save an unnecessary fail. You can check prices at Black Circles if you need replacements. If you need repairs before retesting, sites like BookMyGarage let you compare local prices.
| a suspension pin, bush or joint excessively worn | 17 |
| a spring or spring component fractured or seriously weakened | 13 |
| a suspension joint dust cover missing or no longer prevents the ingress of dirt etc | 11 |
| significant brake effort recorded with no brake applied indicating a binding brake | 8 |
| parking brake efficiency below minimum requirement | 7 |
| the aim of a headlamp is not within limits laid down in the requirements | 7 |
| a tyre seriously damaged | 7 |
| parking brake inoperative on one side | 5 |
| engine mil illuminated indicating a malfunction | 5 |
| wiper blade missing or obviously not clearing the windscreen | 5 |
How serious are these failures?
Not all MOT failures are equal. 27.1% of M8 failures could actually strand you: fractured springs, engine faults, exhaust problems. Another 45.9% are safety issues where the car still drives but shouldn't, such as worn brakes, corroded brake pipes, and steering wear. Breakdown cover may be worth considering for this model. When it does fail, the average repair bill is around £134.
By registration year
| Year | Pass rate | Top failures |
|---|---|---|
| 2018 | 78.6% | a suspension pin, bush or joint excessively worn, a suspension joint dust cover missing or no longer prevents the ingress of dirt etc |
| 2017 | 75.5% | a suspension pin, bush or joint excessively worn, the aim of a headlamp is not within limits laid down in the requirements |
Typical mileage
Half of all M8s tested had between 165,388 and 240,801 miles on the clock. A significant number are high-mileage vehicles.
At 206,603 median miles, the M8 has 0.011 failures per 10,000 miles driven.
Other Mercedes-Benz models
Common questions
What is the Mercedes-Benz M8 MOT pass rate?
The Mercedes-Benz M8 has a 78.3% MOT pass rate based on 313 real MOT tests. This is above the national average.
What are common MOT failures on a Mercedes-Benz M8?
The most common MOT failure on the Mercedes-Benz M8 is a suspension pin, bush or joint excessively worn, which caused 17 failures. Other common issues include a spring or spring component fractured or seriously weakened.
What is the typical mileage of a Mercedes-Benz M8 at MOT?
The median mileage at MOT for a Mercedes-Benz M8 is 206,603 miles. The middle 50% of vehicles tested have between 165,388 and 240,801 miles.
Buying a used M8?
Start with the free tools. Look up the specific vehicle's MOT history on GOV.UK The mileage at each test will show if it's been wound back, and the advisory history tells you what's wearing. Cross-reference that against the typical failures above to see if anything looks unusual for this model.
The free data won't tell you about outstanding finance, theft markers, or write-off history. For that, you need a vehicle history check This is especially important on a private sale where you have fewer legal protections.
With a 78.3% pass rate and an average repair bill of £134 when things go wrong, budget accordingly. 27.1% of failures on this model could actually strand you, so breakdown cover may be worth considering.
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MOT data from DVSA anonymised test results, 2024 test year. Fleet data from DfT vehicle licensing statistics. Crown copyright, OGL v3.0. MOT pass rates are statistical summaries of test outcomes, not assessments of individual vehicle safety or condition. Always inspect a vehicle and check its full MOT history before purchasing. See terms of use.