1983 Mercedes-Benz 230 — MOT failures & pass rate
The 1983 Mercedes-Benz 230 passed 80.9% of its 346 recorded MOT tests. That is effectively the same as all cars of a similar age (19.2% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in body, structure & corrosion, lighting & signalling and suspension.
What the MOT record shows
No single area dominates — body, structure & corrosion (8.4%) and lighting & signalling (8.1%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are ball joint dust cover, component mounting prescribed areas and service brake performance — ball joint dust cover alone was recorded 19 times.
A 150k+ example is materially riskier than a 60-90k one: 26.6% versus 14.0%.
Suspension is the most common advisory, noted on 23.7% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 23.0% in 2021 to 11.6% in 2024, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Body, structure & corrosion | 8.4% | 29 |
| 2 | Lighting & signalling | 8.1% | 28 |
| 3 | Suspension | 7.8% | 27 |
| 4 | Brakes | 6.7% | 23 |
| 5 | Visibility | 3.5% | 12 |
| 6 | Steering | 2.6% | 9 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Ball joint dust cover | 19 |
| 2 | Component mounting prescribed areas | 19 |
| 3 | Service brake performance | 11 |
| 4 | Position lamp | 10 |
| 5 | Headlamp aim | 10 |
| 6 | Track rod end | 9 |
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 | 23.7% | 82 |
| 2 | Brakes | 21.7% | 75 |
| 3 | Emissions & environmental | 20.5% | 71 |
| 4 | Body, structure & corrosion | 18.5% | 64 |
| 5 | Steering | 14.7% | 51 |
| 6 | Tyres | 10.1% | 35 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 60-90k | 57 | 14.0% |
| 90-120k | 94 | 18.1% |
| 120-150k | 93 | 17.2% |
| 150k+ | 79 | 26.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 100 | 23.0% |
| 2022 | 97 | 19.6% |
| 2023 | 78 | 19.2% |
| 2024 | 43 | 11.6% |
What to check before buying a 1983 230
The failure pattern for this year is specific enough to inspect against: body, structure & corrosion accounted for 8.4% of tests. Start there.
- Body, structure & corrosion (8.4% 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+.
- Lighting & signalling (8.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (7.8% 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 230s pass their MOT?
80.9% of the 346 1983 Mercedes-Benz 230 MOT tests in this dataset passed — a 19.1% fail rate.
What is the most common MOT failure on a 1983 Mercedes-Benz 230?
Body, structure & corrosion, recorded in 8.4% of tests, followed by lighting & signalling (8.1%).
Does the 1983 230 get worse with mileage?
Its MOT fail rate rises from 14.0% in the 60-90k band to 26.6% in the 150k+ band.
Methodology & source. Based on 346 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.