1994 Volvo 400 Series — MOT failures & pass rate
The 1994 Volvo 400 Series passed 69.1% of its 502 recorded MOT tests. All cars of a similar age fail 23.9% of the time, so this is 7.0pp 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 (15.1%) and lighting & signalling (14.1%) 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, rbt (sp) and headlamp aim — component mounting prescribed areas alone was recorded 55 times.
Mileage is the strongest signal on the record: 27.0% of 0-30k cars fail, rising to 33.3% once past 120-150k.
Advisories point at the next bill rather than this one: suspension was flagged on 36.4% of tests without failing them.
The trend is worsening — 28.2% of tests failed in 2021 against 36.0% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 15.1% | 76 |
| 2 | Lighting & signalling | 14.1% | 71 |
| 3 | Suspension | 12.6% | 63 |
| 4 | Body, structure & corrosion | 9.2% | 46 |
| 5 | Emissions & environmental | 7.8% | 39 |
| 6 | Visibility | 5.4% | 27 |
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 | 55 |
| 2 | Rbt (sp) | 39 |
| 3 | Headlamp aim | 31 |
| 4 | Position lamp | 29 |
| 5 | Catalyst emissions | 29 |
| 6 | Exhaust system | 25 |
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 | 36.4% | 183 |
| 2 | Brakes | 33.5% | 168 |
| 3 | Emissions & environmental | 24.7% | 124 |
| 4 | Body, structure & corrosion | 22.9% | 115 |
| 5 | Tyres | 15.5% | 78 |
| 6 | Lighting & signalling | 13.4% | 67 |
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 | 27.0% |
| 30-60k | 123 | 33.3% |
| 60-90k | 174 | 28.7% |
| 90-120k | 127 | 32.3% |
| 120-150k | 33 | 33.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 131 | 28.2% |
| 2022 | 107 | 26.2% |
| 2023 | 108 | 35.2% |
| 2024 | 81 | 30.9% |
| 2025 | 75 | 36.0% |
What to check before buying a 1994 400 Series
On a 1994 400 Series, brakes is what the MOT record says goes wrong most — it appeared in 15.1% of tests. Check these areas before you commit.
- Brakes (15.1% 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 (14.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (12.6% 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 1994 Volvo 400 Seriess pass their MOT?
69.1% of the 502 1994 Volvo 400 Series MOT tests in this dataset passed — a 30.9% fail rate.
What is the most common MOT failure on a 1994 Volvo 400 Series?
Brakes, recorded in 15.1% of tests, followed by lighting & signalling (14.1%).
Does the 1994 400 Series get worse with mileage?
Its MOT fail rate rises from 27.0% in the 0-30k band to 33.3% in the 120-150k band.
Methodology & source. Based on 502 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.