Mercedes Slc Reliability, MOT Pass Rate & Common Faults
Free Mercedes Slc car check
Is the Mercedes Slc reliable? We analysed 1,272 real MOT tests across 170 vehicles to find out.
Got a specific Mercedes Slc? Enter the reg for a free check:
The Mercedes Slc is about average for reliability based on real UK MOT data. Common problems include suspension component mounting prescribed area is excessively corroded, windscreen washer provides insufficient washer liquid and brake binding. Here's everything you need to know before buying a used Mercedes Slc.
Mercedes Slc Number Plates
Number plates registered to a Mercedes Slc. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Mercedes Slc MOT Pass Rate by Year
How likely is a Mercedes Slc to pass its MOT? Here's the pass rate for each registration year, newest first.
Mercedes Slc Problems — What Goes Wrong?
The most common reasons a Mercedes Slc fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Mercedes Slc Mileage — What's Normal?
How many miles does a typical Mercedes Slc owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Mercedes Slc MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Mercedes Slc year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1981 | 86 | 68.6% | 69,882 | 95,684 | 113,156 |
| 1980 | 250 | 76.4% | 45,548 | 66,882 | 96,919 |
| 1979 | 401 | 70.3% | 75,596 | 94,418 | 120,570 |
| 1978 | 134 | 65.7% | 76,751 | 98,067 | 113,384 |
| 1974 | 75 | 77.3% | 64,486 | 71,789 | 124,286 |
How Long Does a Mercedes Slc Last?
Based on 170 Mercedes Slc vehicles on UK roads.
Mercedes Slc Mileage Distribution
Total mileage recorded across all Mercedes Slc MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Mercedes Slc
Based on MOT pass rates across all registration years with sufficient test data.
77.3% MOT pass rate from 75 tests
65.7% MOT pass rate from 134 tests
The best year to buy a used Mercedes Slc is 1974, which has the highest MOT pass rate at 77.3% across 75 tests. The 1978 model year has the lowest pass rate at 65.7% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Mercedes Slc Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Mercedes Slc THIS CAR | 72.8% | 1,272 | 86,074 mi | 52 yrs |
| Mercedes Motorhome | 76.7% | 14,848 | 66,873 mi | 45 yrs |
| Mercedes Unknown | 79.2% | 11,881 | 102,484 mi | 39 yrs |
| Mercedes Camper | 74.6% | 8,342 | 82,260 mi | 47 yrs |
| Jaguar E-pace Rdynam Hse D MHEV AWD A | 93% | 724 | 27,003 mi | — yrs |
Compared to the Mercedes Motorhome (76.7% pass rate) and the Mercedes Unknown (79.2% pass rate), the Mercedes Slc trails behind on MOT reliability.
Found a Mercedes Slc you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Mercedes SlcShould you buy a used Mercedes Slc?
The Mercedes Slc has an overall MOT pass rate of 72.8% across 1,272 real MOT tests — roughly in line with the UK average.
The most common problems on the Mercedes Slc are suspension component mounting prescribed area is excessively corroded (104 recorded failures), windscreen washer provides insufficient washer liquid (58), and brake binding (58). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
A typical Mercedes Slc owner drives around 440 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
In terms of longevity, most Mercedes Slc models stay on UK roads for around 52 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.