Mercedes-Benz Unclassified
From 1,746 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 engine mil illuminated indicating a malfunction, brake pipe damaged or excessively corroded and the aim of a headlamp is not within limits laid down in the requirements. The top issue, engine mil illuminated indicating a malfunction, caused 27 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.
| engine mil illuminated indicating a malfunction | 27 |
| brake pipe damaged or excessively corroded | 25 |
| the aim of a headlamp is not within limits laid down in the requirements | 24 |
| a suspension pin, bush or joint excessively worn | 23 |
| tyre tread depth not in accordance with the requirements | 22 |
| lamp emitted colour, position or intensity not in accordance with the requirements | 18 |
| parking brake efficiency below minimum requirement | 18 |
| a tyre cords visible or damaged | 15 |
| a direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 15 |
| a tyre seriously damaged | 14 |
How serious are these failures?
Not all MOT failures are equal. 47.3% of Unclassified failures are safety items (worn brakes, tyre damage, steering play). The car still drives, but you shouldn't. Only 13.4% are the kind that would actually strand you. When it does fail, the average repair bill is around £111.
By registration year
| Year | Pass rate | Top failures |
|---|---|---|
| 2021 | 96.9% | a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning, the aim of a headlamp is not within limits laid down in the requirements |
| 2020 | 85% | brake pipe damaged or excessively corroded, engine mil illuminated indicating a malfunction |
| 2018 | 91.9% | tyres on the same axle or on twin wheels are different sizes, steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc |
| 2016 | 79.7% | tyre tread depth not in accordance with the requirements, a suspension pin, bush or joint excessively worn |
3 earlier years
| 2015 | 88% | brake disc or drum excessively weakened, insecure or fractured, tyre tread depth not in accordance with the requirements |
| 2014 | 76.4% | engine mil illuminated indicating a malfunction, parking brake efficiency below minimum requirement |
| 2013 | 87.8% | engine mil illuminated indicating a malfunction, tyre tread depth not in accordance with the requirements |
Typical mileage
Half of all Unclassifieds tested had between 40,331 and 73,528 miles on the clock.
At 64,899 median miles, the Unclassified has 0.024 failures per 10,000 miles driven.
Other Mercedes-Benz models
Common questions
What is the Mercedes-Benz Unclassified MOT pass rate?
The Mercedes-Benz Unclassified has a 84.2% MOT pass rate based on 1,746 real MOT tests. This is above the national average.
What are common MOT failures on a Mercedes-Benz Unclassified?
The most common MOT failure on the Mercedes-Benz Unclassified is engine mil illuminated indicating a malfunction, which caused 27 failures. Other common issues include brake pipe damaged or excessively corroded.
What is the typical mileage of a Mercedes-Benz Unclassified at MOT?
The median mileage at MOT for a Mercedes-Benz Unclassified is 64,899 miles. The middle 50% of vehicles tested have between 40,331 and 73,528 miles.
Buying a used Unclassified?
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 84.2% pass rate and an average repair bill of £111 when things go wrong, budget accordingly.
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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.