1997 Rover 100 — MOT failures & pass rate
Across 564 MOT tests, the 1997 Rover 100 recorded a 73.6% pass rate. That is 1.3 percentage points worse than all cars of a similar age, which fail at 25.1%. Failures cluster in brakes, lighting & signalling and suspension.
What the MOT record shows
No single area dominates — brakes (14.0%) and lighting & signalling (13.3%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are service brake performance, catalyst emissions and component mounting prescribed areas — service brake performance alone was recorded 78 times.
Condition tracks the odometer closely. Failures run at 20.5% in the 0-30k band and 27.1% in the 60-90k band, a 6.6-point spread.
Advisories point at the next bill rather than this one: brakes was flagged on 20.2% of tests without failing them.
The trend is improving — the fail rate fell from 29.2% in 2021 to 27.0% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 14.0% | 79 |
| 2 | Lighting & signalling | 13.3% | 75 |
| 3 | Suspension | 11.0% | 62 |
| 4 | Body, structure & corrosion | 8.9% | 50 |
| 5 | Emissions & environmental | 7.8% | 44 |
| 6 | Visibility | 4.3% | 24 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Service brake performance | 78 |
| 2 | Catalyst emissions | 71 |
| 3 | Component mounting prescribed areas | 53 |
| 4 | Headlamp aim | 40 |
| 5 | Service brake imbalance | 37 |
| 6 | Wipers | 29 |
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 | 20.2% | 114 |
| 2 | Suspension | 19.5% | 110 |
| 3 | Body, structure & corrosion | 18.6% | 105 |
| 4 | Tyres | 16.8% | 95 |
| 5 | Lighting & signalling | 9.6% | 54 |
| 6 | Other defects | 8.3% | 47 |
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 | 156 | 20.5% |
| 30-60k | 316 | 30.1% |
| 60-90k | 59 | 27.1% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 144 | 29.2% |
| 2022 | 110 | 23.6% |
| 2023 | 115 | 24.3% |
| 2024 | 106 | 27.4% |
| 2025 | 89 | 27.0% |
What to check before buying a 1997 100
On a 1997 100, brakes is what the MOT record says goes wrong most — it appeared in 14.0% of tests. Check these areas before you commit.
- Brakes (14.0% 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.
- Lighting & signalling (13.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (11.0% 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 1997 Rover 100s pass their MOT?
73.6% of the 564 1997 Rover 100 MOT tests in this dataset passed — a 26.4% fail rate.
What is the most common MOT failure on a 1997 Rover 100?
Brakes, recorded in 14.0% of tests, followed by lighting & signalling (13.3%).
Does the 1997 100 get worse with mileage?
Its MOT fail rate rises from 20.5% in the 0-30k band to 27.1% in the 60-90k band.
Methodology & source. Based on 564 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.