Does the Mercedes-Benz SLC fail the MOT on noise, emissions and leaks more than it should?
The Mercedes-Benz SLC records 0.78 noise, emissions and leaks failure items per 100 initial MOT tests (2019–2024), against 0.92 expected for a car of the same age mix: about as expected for its class and age (the difference is within its interval or under 0.5 items per 100 tests) (−0.14, 95% interval −0.23 to −0.05). It ranks 293 of 678 models on noise, emissions and leaks (1 = most failures above expected).
Data release dvsa-2024-v2 (24 Sep 2026) · page updated 30 Sep 2026 · all models on noise, emissions and leaks · check a Mercedes-Benz SLC by registration
What exactly fails on noise, emissions and leaks?
The most frequent DVSA defect wording in this group on the Mercedes-Benz SLC is “Engine MIL illuminated indicating a malfunction”, recorded 162 times in 2019–2024.
| DVSA defect wording | Items | Per 100 tests |
|---|---|---|
| Engine MIL illuminated indicating a malfunction | 162 | 0.38 |
| Lambda coefficient outside the default limits or the range specified by the manufacturer | 139 | 0.33 |
Source: DVSA MOT bulk data (OGL v3.0) · Window: 2019–2024 · n = 42,512 (initial tests) · Method: failure items (major and minor) grouped by DVSA's defect tree; wordings with 30+ items · Updated: 30 Sep 2026 · Release: dvsa-2024-v2 · CSV
Other pages for this model
Mercedes-Benz SLC 2016 · Mercedes-Benz SLC 2017 · Mercedes-Benz SLC 2018 · Mercedes-Benz SLC 2019 · Mercedes-Benz SLC 2020 · Mercedes-Benz SLC by postcode area · Mercedes-Benz SLC brakes failures · Mercedes-Benz SLC vehicle identification failures · Mercedes-Benz SLC lamps, reflectors and electrics failures · Mercedes-Benz SLC road wheels failures · Mercedes-Benz SLC steering failures · Mercedes-Benz SLC suspension failures · Mercedes-Benz SLC tyres failures · Mercedes-Benz SLC visibility failures