Mercedes-Benz Slc
From 17,618 MOT tests. Above average for its class.
Common MOT failure categories
Pass rate by registration year
Newer Slcs fare better: 2020 models pass at 93.7% vs 87.8% for 2016.
Pass rate by fuel type
What goes wrong?
The most common MOT failure reasons are a tyre seriously damaged, a tyre cords visible or damaged and tyre tread depth not in accordance with the requirements. The top issue, a tyre seriously damaged, caused 364 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 tyre seriously damaged | 364 |
| a tyre cords visible or damaged | 319 |
| tyre tread depth not in accordance with the requirements | 159 |
| a spring or spring component fractured or seriously weakened | 152 |
| a suspension pin, bush or joint excessively worn | 133 |
| a suspension joint dust cover missing or no longer prevents the ingress of dirt etc | 115 |
| warning device shows system malfunction | 67 |
| engine mil illuminated indicating a malfunction | 66 |
| any fracture or welding defect on a wheel | 47 |
| the aim of a headlamp is not within limits laid down in the requirements | 44 |
How serious are these failures?
Not all MOT failures are equal. 55.7% of Slc failures are safety items (worn brakes, tyre damage, steering play). The car still drives, but you shouldn't. Only 14.9% are the kind that would actually strand you. When it does fail, the average repair bill is around £105.
Mercedes-Benz Slc on UK roads
The fleet is shrinking: 51 scrapped or exported in the past year with only 1 newly registered, a net loss of 50.
Quarterly breakdown
| Quarter | On road | SORN | New | Gone | Net |
|---|---|---|---|---|---|
| 2025 Q3 | 7,916 | 161 | +0 | -29 | -29 |
| 2025 Q2 | 7,972 | 134 | +0 | -0 | +31 |
| 2025 Q1 | 7,872 | 203 | +1 | -9 | -8 |
| 2024 Q4 | 7,878 | 205 | +0 | -13 | -13 |
| 2024 Q3 | 7,960 | 136 | +0 | -0 | +2 |
| 2024 Q2 | 7,980 | 114 | +0 | -0 | +16 |
| 2024 Q1 | 7,948 | 130 | +0 | -0 | +3 |
| 2023 Q4 | 7,918 | 157 | +0 | -17 | -17 |
13 variants on the road
| Variant | Fuel | Licensed | Share |
|---|---|---|---|
| Slc 250 D Amg Line Auto | Diesel | 2,378 | 30% |
| Slc 200 Amg Line Auto | Petrol | 1,891 | 24% |
| Slc 300 Amg Line Auto | Petrol | 1,230 | 16% |
| Slc 180 Amg Line Auto | Petrol | 656 | 8% |
| Slc 200 Amg Line | Petrol | 318 | 4% |
| Slc 250 D Sport Auto | Diesel | 280 | 4% |
| Slc 300 Final Edition Prem A | Petrol | 259 | 3% |
| Slc 180 Amg Line | Petrol | 204 | 3% |
| Slc 200 Sport Auto | Petrol | 189 | 2% |
| Slc 200 Final Edition | Petrol | 155 | 2% |
| Slc 200 Sport | Petrol | 129 | 2% |
| Slc 200 Final Edition Auto | Petrol | 116 | 1% |
| Slc 200 Final Edition Premium | Petrol | 110 | 1% |
Source: DfT vehicle licensing statistics, 2025 Q3. Crown copyright, OGL v3.0.
By registration year
| Year | Pass rate | Top failures |
|---|---|---|
| 2020 | 93.7% | a tyre cords visible or damaged, a tyre seriously damaged |
| 2019 | 92.5% | a tyre seriously damaged, a tyre cords visible or damaged |
| 2018 | 91.3% | a tyre cords visible or damaged, a tyre seriously damaged |
| 2017 | 88.4% | a tyre seriously damaged, a tyre cords visible or damaged |
1 earlier years
| 2016 | 87.8% | a tyre seriously damaged, a tyre cords visible or damaged |
Typical mileage
Half of all Slcs tested had between 16,825 and 35,359 miles on the clock. Relatively low mileage overall. Many are still fairly young.
At 24,537 median miles, the Slc has 0.044 failures per 10,000 miles driven.
Other Mercedes-Benz models
Common questions
What is the Mercedes-Benz Slc MOT pass rate?
The Mercedes-Benz Slc has a 89.3% MOT pass rate based on 17,618 real MOT tests. This is above the national average.
What are common MOT failures on a Mercedes-Benz Slc?
The most common MOT failure on the Mercedes-Benz Slc is a tyre seriously damaged, which caused 364 failures. Other common issues include a tyre cords visible or damaged.
How many Mercedes-Benz Slcs are on UK roads?
There are 7,916 Mercedes-Benz Slcs currently licensed on UK roads, with 161 on SORN.
What is the typical mileage of a Mercedes-Benz Slc at MOT?
The median mileage at MOT for a Mercedes-Benz Slc is 24,537 miles. The middle 50% of vehicles tested have between 16,825 and 35,359 miles.
Buying a used Slc?
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.
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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.