1993 Mercedes-Benz E-Class — MOT failures & pass rate
Across 1,135 MOT tests, the 1993 Mercedes-Benz E-Class recorded an 80.3% pass rate. That is effectively the same as executive cars of a similar age (20.4% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in lighting & signalling, emissions & environmental and brakes.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 12.8% of tests against 6.8% for the next-worst category.
At component level the recurring items are catalyst emissions, position lamp and headlamp aim — catalyst emissions alone was recorded 94 times.
Condition tracks the odometer closely. Failures run at 16.7% in the 30-60k band and 23.8% in the 150k+ band, a 7.1-point spread.
Brakes is the most common advisory, noted on 29.1% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 12.8% | 145 |
| 2 | Emissions & environmental | 6.8% | 77 |
| 3 | Brakes | 6.6% | 75 |
| 4 | Body, structure & corrosion | 5.1% | 58 |
| 5 | Suspension | 4.9% | 55 |
| 6 | Tyres | 3.4% | 38 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Catalyst emissions | 94 |
| 2 | Position lamp | 48 |
| 3 | Headlamp aim | 43 |
| 4 | Component mounting prescribed areas | 35 |
| 5 | Rigid brake pipes | 28 |
| 6 | Rear fog lamp | 26 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 29.1% | 330 |
| 2 | Suspension | 27.9% | 317 |
| 3 | Emissions & environmental | 19.3% | 219 |
| 4 | Tyres | 17.6% | 200 |
| 5 | Body, structure & corrosion | 9.7% | 110 |
| 6 | Other defects | 8.6% | 97 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 84 | 16.7% |
| 60-90k | 165 | 11.5% |
| 90-120k | 247 | 19.4% |
| 120-150k | 287 | 20.6% |
| 150k+ | 341 | 23.8% |
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 1,045 | 19.7% |
| Diesel | 90 | 18.9% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 249 | 19.3% |
| 2022 | 237 | 17.7% |
| 2023 | 233 | 21.0% |
| 2024 | 219 | 21.5% |
| 2025 | 197 | 18.8% |
What to check before buying a 1993 E-Class
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 12.8% of tests. Start there.
- Lighting & signalling (12.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Emissions & environmental (6.8% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
- Brakes (6.6% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 1993 Mercedes-Benz E-Classs pass their MOT?
80.3% of the 1,135 1993 Mercedes-Benz E-Class MOT tests in this dataset passed — a 19.7% fail rate.
What is the most common MOT failure on a 1993 Mercedes-Benz E-Class?
Lighting & signalling, recorded in 12.8% of tests, followed by emissions & environmental (6.8%).
Does the 1993 E-Class get worse with mileage?
Its MOT fail rate rises from 16.7% in the 30-60k band to 23.8% in the 150k+ band.
Methodology & source. Based on 1,135 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.