Mercedes-benz 508 D Reliability, MOT Pass Rate & Common Faults
Free Mercedes-benz 508 D car check
Is the Mercedes-benz 508 D reliable? We analysed 2,678 real MOT tests across 314 vehicles to find out.
Got a specific Mercedes-benz 508 D? Enter the reg for a free check:
The Mercedes-benz 508 D is below average for reliability based on real UK MOT data. Common problems include brakes imbalanced across an axle, windscreen washer provides insufficient washer liquid and windscreen wiper does not clear the windscreen effectively. Here's everything you need to know before buying a used Mercedes-benz 508 D.
Mercedes-benz 508 D Number Plates
Number plates registered to a Mercedes-benz 508 D. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Mercedes-benz 508 D MOT Pass Rate by Year
How likely is a Mercedes-benz 508 D to pass its MOT? Here's the pass rate for each registration year, newest first.
Mercedes-benz 508 D Problems — What Goes Wrong?
The most common reasons a Mercedes-benz 508 D fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Mercedes-benz 508 D Mileage — What's Normal?
How many miles does a typical Mercedes-benz 508 D owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Mercedes-benz 508 D MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Mercedes-benz 508 D year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1995 | 56 | 53.6% | 308,358 | 381,576 | 420,652 |
| 1994 | 124 | 66.1% | 120,707 | 173,746 | 215,448 |
| 1993 | 112 | 69.6% | 168,323 | 217,912 | 266,536 |
| 1992 | 154 | 70.1% | 87,554 | 194,584 | 272,983 |
| 1991 | 100 | 61.0% | 80,407 | 110,446 | 200,208 |
| 1990 | 208 | 68.3% | 122,009 | 184,269 | 279,358 |
| 1989 | 65 | 52.3% | 91,043 | 137,414 | 370,650 |
| 1987 | 407 | 68.6% | 10,626 | 27,786 | 53,110 |
| 1986 | 130 | 66.9% | 92,154 | 172,649 | 223,149 |
| 1985 | 205 | 67.3% | 114,623 | 200,304 | 302,819 |
| 1984 | 200 | 64.0% | 119,960 | 201,947 | 273,466 |
| 1983 | 172 | 59.9% | 152,654 | 263,186 | 313,385 |
| 1982 | 151 | 59.6% | 201,876 | 236,916 | 410,862 |
| 1981 | 166 | 60.8% | 131,682 | 191,193 | 238,590 |
| 1980 | 57 | 49.1% | 138,131 | 153,372 | 163,209 |
| 1977 | 54 | 66.7% | 118,700 | 134,474 | 143,845 |
How Long Does a Mercedes-benz 508 D Last?
Based on 314 Mercedes-benz 508 D vehicles on UK roads.
Mercedes-benz 508 D Mileage Distribution
Total mileage recorded across all Mercedes-benz 508 D 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-benz 508 D
Based on MOT pass rates across all registration years with sufficient test data.
70.1% MOT pass rate from 154 tests
49.1% MOT pass rate from 57 tests
The best year to buy a used Mercedes-benz 508 D is 1992, which has the highest MOT pass rate at 70.1% across 154 tests. The 1980 model year has the lowest pass rate at 49.1% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Mercedes-benz 508 D Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Mercedes-benz 508 D THIS CAR | 64.6% | 2,678 | 171,856 mi | 49 yrs |
| Mercedes-benz C | 77.6% | 8,031,355 | 77,082 mi | 32 yrs |
| Mercedes-benz E | 79.4% | 4,722,746 | 83,960 mi | 33 yrs |
| Mercedes-benz A-class | 77.6% | 4,204,702 | 57,023 mi | 28 yrs |
| Ducati Scrambler Full Throttle | 93.7% | 863 | 3,954 mi | — yrs |
Compared to the Mercedes-benz C (77.6% pass rate) and the Mercedes-benz E (79.4% pass rate), the Mercedes-benz 508 D trails behind on MOT reliability.
Found a Mercedes-benz 508 D 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-benz 508 DShould you buy a used Mercedes-benz 508 D?
The Mercedes-benz 508 D has an overall MOT pass rate of 64.6% across 2,678 real MOT tests — below the UK average, so reliability should be a key concern.
The most common problems on the Mercedes-benz 508 D are brakes imbalanced across an axle (188 recorded failures), windscreen washer provides insufficient washer liquid (133), and windscreen wiper does not clear the windscreen effectively (97). 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-benz 508 D owner drives around 2,904 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-benz 508 D models stay on UK roads for around 49 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.