1997 MG MGF — MOT failures & pass rate
4,740 MOT tests on the 1997 MG MGF are in this dataset, and 73.4% of them passed. Against all cars of a similar age (25.1% fail rate), the 1997 MGF comes out 1.5pp worse. Failures cluster in lighting & signalling, emissions & environmental and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (12.5%) and emissions & environmental (11.3%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are catalyst emissions, headlamp aim and rbt (sp) — catalyst emissions alone was recorded 901 times.
A 120-150k example is materially riskier than a 0-30k one: 38.1% versus 12.4%.
Suspension is the most common advisory, noted on 28.7% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 28.7% in 2021 to 25.4% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 12.5% | 593 |
| 2 | Emissions & environmental | 11.3% | 536 |
| 3 | Brakes | 9.5% | 450 |
| 4 | Suspension | 9.2% | 435 |
| 5 | Visibility | 6.3% | 299 |
| 6 | Steering | 4.0% | 191 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Catalyst emissions | 901 |
| 2 | Headlamp aim | 282 |
| 3 | Rbt (sp) | 244 |
| 4 | Stop lamp | 185 |
| 5 | Service brake performance | 184 |
| 6 | Wipers | 182 |
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 | 28.7% | 1,361 |
| 2 | Brakes | 26.4% | 1,251 |
| 3 | Tyres | 16.1% | 764 |
| 4 | Lighting & signalling | 11.3% | 534 |
| 5 | Emissions & environmental | 8.7% | 411 |
| 6 | Body, structure & corrosion | 6.3% | 301 |
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 | 348 | 12.4% |
| 30-60k | 1,397 | 21.5% |
| 60-90k | 1,794 | 28.9% |
| 90-120k | 1,002 | 32.5% |
| 120-150k | 176 | 38.1% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,172 | 28.7% |
| 2022 | 1,097 | 29.2% |
| 2023 | 907 | 24.1% |
| 2024 | 795 | 24.1% |
| 2025 | 769 | 25.4% |
What to check before buying a 1997 MGF
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 12.5% of tests. Start there.
- Lighting & signalling (12.5% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Emissions & environmental (11.3% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
- Brakes (9.5% 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.
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 MG MGFs pass their MOT?
73.4% of the 4,740 1997 MG MGF MOT tests in this dataset passed — a 26.7% fail rate.
What is the most common MOT failure on a 1997 MG MGF?
Lighting & signalling, recorded in 12.5% of tests, followed by emissions & environmental (11.3%).
Does the 1997 MGF get worse with mileage?
Its MOT fail rate rises from 12.4% in the 0-30k band to 38.1% in the 120-150k band.
Methodology & source. Based on 4,740 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.