1993 Volvo 400 Series — MOT failures & pass rate
Across 473 MOT tests, the 1993 Volvo 400 Series recorded a 70.4% pass rate. All cars of a similar age fail 23.4% of the time, so this is 6.2pp worse than the group it competes with. Failures cluster in brakes, lighting & signalling and suspension.
What the MOT record shows
No single area dominates — brakes (18.6%) and lighting & signalling (16.1%) 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, catalyst emissions and rbt (sp) — component mounting prescribed areas alone was recorded 58 times.
Condition tracks the odometer closely. Failures run at 19.4% in the 0-30k band and 36.7% in the 120-150k band, a 17.4-point spread.
Suspension is the most common advisory, noted on 29.4% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 18.6% | 88 |
| 2 | Lighting & signalling | 16.1% | 76 |
| 3 | Suspension | 10.4% | 49 |
| 4 | Visibility | 9.5% | 45 |
| 5 | Emissions & environmental | 9.3% | 44 |
| 6 | Body, structure & corrosion | 8.9% | 42 |
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 | 58 |
| 2 | Catalyst emissions | 45 |
| 3 | Rbt (sp) | 38 |
| 4 | Service brake performance | 38 |
| 5 | Headlamp aim | 37 |
| 6 | Wipers | 33 |
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 | 29.4% | 139 |
| 2 | Brakes | 27.7% | 131 |
| 3 | Emissions & environmental | 26.6% | 126 |
| 4 | Tyres | 18.2% | 86 |
| 5 | Body, structure & corrosion | 18.2% | 86 |
| 6 | Lighting & signalling | 16.7% | 79 |
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 | 31 | 19.4% |
| 30-60k | 151 | 29.1% |
| 60-90k | 115 | 25.2% |
| 90-120k | 104 | 36.5% |
| 120-150k | 49 | 36.7% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 120 | 26.7% |
| 2022 | 106 | 30.2% |
| 2023 | 93 | 31.2% |
| 2024 | 84 | 33.3% |
| 2025 | 70 | 27.1% |
What to check before buying a 1993 400 Series
The failure pattern for this year is specific enough to inspect against: brakes accounted for 18.6% of tests. Start there.
- Brakes (18.6% 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.
- Lighting & signalling (16.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (10.4% 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 1993 Volvo 400 Seriess pass their MOT?
70.4% of the 473 1993 Volvo 400 Series MOT tests in this dataset passed — a 29.6% fail rate.
What is the most common MOT failure on a 1993 Volvo 400 Series?
Brakes, recorded in 18.6% of tests, followed by lighting & signalling (16.1%).
Does the 1993 400 Series get worse with mileage?
Its MOT fail rate rises from 19.4% in the 0-30k band to 36.7% in the 120-150k band.
Methodology & source. Based on 473 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.