MG TF MOT pass rate and common failures
In 2025, 69.6% of MG TF MOT tests were a first-time pass, across 8,694 tests in Great Britain. For all cars it was 71.5%.
Compared with cars of the same age
Older cars fail more often, so a model that’s mostly a few years old will look better than one that’s mostly 12. These figures compare like with like.
At 3–5 years
–
Too few tests at this age to say.
At 6–10 years
–
Too few tests at this age to say.
At 11 years and over
69.6%
All cars: 61.3% (8.3 points better). 8,615 tests.
Pass rate by age
Figures by age, with typical mileage
| Age (years) | Tests | First-time pass | All cars | Typical mileage |
|---|---|---|---|---|
| 14 | 125 | 77.6% | 60.2% | 38,750 miles |
| 15 | 302 | 74.5% | 58.6% | 38,750 miles |
| 16 | 198 | 71.7% | 57.5% | 41,250 miles |
| 18 | 153 | 73.2% | 57.0% | 48,750 miles |
| 19 | 507 | 75.7% | 57.2% | 48,750 miles |
| 20+ | 7,330 | 68.7% | 61.4% | 58,750 miles |
Typical mileage is the median reading at the test, to the nearest 2,500 miles.
What fails most often
The share of MG TF MOT tests that failed on at least one item in each area, against all cars. A test can fail on several areas at once.
| Area | TF | All cars |
|---|---|---|
| Brakes | 18.5% | 10.2% |
| Lamps, reflectors and electrical equipment | 14.3% | 16.6% |
| Suspension | 14.1% | 13.7% |
| Noise, emissions and leaks | 10.9% | 4.0% |
| Visibility | 7.4% | 5.2% |
| Tyres | 4.6% | 8.4% |
| Body, chassis, structure | 4.3% | 4.2% |
| Steering | 3.6% | 2.5% |
Most common reasons for failing
- Rbt (sp): efficiency below requirements failed 4.9% of tests
- Wipers: does not clear the windscreen effectively failed 2.9% of tests · what this means
- Track rod end: ball joint has excessive play failed 2.8% of tests · what this means
- Horn: not working failed 2.6% of tests · what this means
- Component mounting prescribed areas: prescribed area excessively corroded significantly reducing structural strength failed 2.5% of tests
- Catalyst emissions: lambda reading after 2nd fast idle outside specified limits failed 2.2% of tests · what this means
- Washers: provides insufficient washer liquid failed 2.2% of tests · what this means
- Ball joint excessively worn failed 2.2% of tests · what this means
- Suspension arm: corroded and seriously weakened failed 2.2% of tests
- Malfunction indicator lamp: inoperative or indicates a malfunction failed 2.0% of tests · what this means
Checking a particular TF?
See its own MOT history, mileage record and advisories in plain English. Free, no sign-up.
About these figures
- They cover every TF version DVSA records under this name (engines, trims and generations together), on its first MOT test of each visit. A “pass with rectification” (fixed within an hour) counts as a fail, as in DVSA’s own statistics.
- Cars under three years old are left out, because the few tested that young are mostly taxis.
- Fuel mix of the cars tested: petrol 100.0%.
- A pass rate describes the model, not any one car. How a car has been looked after matters more.
Download these figures (CSV) · Other MG models · All makes
Source: DVSA anonymised MOT test data for 2025. Contains public sector information licensed under the Open Government Licence v3.0. Our own analysis; not produced or endorsed by DVSA.