1998 Mercedes-Benz V-Class — MOT failures & pass rate
353 MOT tests on the 1998 Mercedes-Benz V-Class are in this dataset, and 69.7% of them passed. That is effectively the same as MPVs of a similar age (30.1% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 21.3% of tests against 17.0% for the next-worst category.
At component level the recurring items are headlamp, catalyst emissions and component mounting prescribed areas — headlamp alone was recorded 38 times.
Mileage is the strongest signal on the record: 23.1% of 60-90k cars fail, rising to 35.9% once past 150k.
Brakes is the most common advisory, noted on 41.1% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 31.3% in 2021 to 28.9% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 21.3% | 75 |
| 2 | Brakes | 17.0% | 60 |
| 3 | Suspension | 14.4% | 51 |
| 4 | Body, structure & corrosion | 13.0% | 46 |
| 5 | Visibility | 9.9% | 35 |
| 6 | Emissions & environmental | 6.2% | 22 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp | 38 |
| 2 | Catalyst emissions | 36 |
| 3 | Component mounting prescribed areas | 32 |
| 4 | Wipers | 30 |
| 5 | Rbt (sp) | 27 |
| 6 | Service brake performance | 24 |
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 | 41.1% | 145 |
| 2 | Suspension | 30.3% | 107 |
| 3 | Tyres | 26.9% | 95 |
| 4 | Body, structure & corrosion | 22.9% | 81 |
| 5 | Lighting & signalling | 13.6% | 48 |
| 6 | Other defects | 13.6% | 48 |
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 | 78 | 23.1% |
| 90-120k | 123 | 35.0% |
| 120-150k | 75 | 30.7% |
| 150k+ | 39 | 35.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 99 | 31.3% |
| 2022 | 76 | 28.9% |
| 2023 | 76 | 28.9% |
| 2024 | 57 | 33.3% |
| 2025 | 45 | 28.9% |
What to check before buying a 1998 V-Class
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 21.3% of tests. Start there.
- Lighting & signalling (21.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (17.0% 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.
- Suspension (14.4% 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 1998 Mercedes-Benz V-Classs pass their MOT?
69.7% of the 353 1998 Mercedes-Benz V-Class MOT tests in this dataset passed — a 30.3% fail rate.
What is the most common MOT failure on a 1998 Mercedes-Benz V-Class?
Lighting & signalling, recorded in 21.3% of tests, followed by brakes (17.0%).
Does the 1998 V-Class get worse with mileage?
Its MOT fail rate rises from 23.1% in the 60-90k band to 35.9% in the 150k+ band.
Methodology & source. Based on 353 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.