1983 Mercedes-Benz 280 — MOT failures & pass rate
695 MOT tests on the 1983 Mercedes-Benz 280 are in this dataset, and 84.2% of them passed. That is 3.3 percentage points better than all cars of a similar age, which fail at 19.1%. Failures cluster in lighting & signalling, body, structure & corrosion and suspension.
What the MOT record shows
No single area dominates — lighting & signalling (6.3%) and body, structure & corrosion (6.2%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are component mounting prescribed areas, chassis condition and service brake performance — component mounting prescribed areas alone was recorded 44 times.
Condition tracks the odometer closely. Failures run at 8.1% in the 0-30k band and 20.0% in the 150k+ band, a 11.9-point spread — more than double.
Advisories point at the next bill rather than this one: suspension was flagged on 21.6% of tests without failing them.
The trend is improving — the fail rate fell from 19.5% in 2021 to 11.8% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.3% | 44 |
| 2 | Body, structure & corrosion | 6.2% | 43 |
| 3 | Suspension | 5.6% | 39 |
| 4 | Brakes | 4.8% | 33 |
| 5 | Visibility | 3.3% | 23 |
| 6 | Emissions & environmental | 2.6% | 18 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Component mounting prescribed areas | 44 |
| 2 | Chassis condition | 25 |
| 3 | Service brake performance | 18 |
| 4 | Headlamp aim | 18 |
| 5 | Integral vehicle structure condition | 17 |
| 6 | Headlamp | 15 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 21.6% | 150 |
| 2 | Brakes | 19.4% | 135 |
| 3 | Emissions & environmental | 19.0% | 132 |
| 4 | Body, structure & corrosion | 13.0% | 90 |
| 5 | Tyres | 9.3% | 65 |
| 6 | Steering | 6.5% | 45 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 37 | 8.1% |
| 30-60k | 82 | 11.0% |
| 60-90k | 147 | 12.9% |
| 90-120k | 196 | 17.9% |
| 120-150k | 142 | 18.3% |
| 150k+ | 90 | 20.0% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 195 | 19.5% |
| 2022 | 190 | 16.3% |
| 2023 | 170 | 15.9% |
| 2024 | 72 | 8.3% |
| 2025 | 68 | 11.8% |
What to check before buying a 1983 280
On a 1983 280, lighting & signalling is what the MOT record says goes wrong most — it appeared in 6.3% of tests. Check these areas before you commit.
- Lighting & signalling (6.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Body, structure & corrosion (6.2% of tests): The one to take seriously on older cars — corrosion to structural areas can be costly and is an MOT failure. Typical repair: £200–£1,500+.
- Suspension (5.6% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
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 1983 Mercedes-Benz 280s pass their MOT?
84.2% of the 695 1983 Mercedes-Benz 280 MOT tests in this dataset passed — a 15.8% fail rate.
What is the most common MOT failure on a 1983 Mercedes-Benz 280?
Lighting & signalling, recorded in 6.3% of tests, followed by body, structure & corrosion (6.2%).
Does the 1983 280 get worse with mileage?
Its MOT fail rate rises from 8.1% in the 0-30k band to 20.0% in the 150k+ band.
Methodology & source. Based on 695 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.