2017 London Taxis Int TX4 MOT pass rate: 82.8% (1,671 tests)
Is the 2017 TX4 getting worse?
Pass rate of 2017-registered cars across recent test years:
| Test year | Pass rate | |
|---|---|---|
| 2023 | 84.7% -1.1 vs same-age |
|
| 2024 | 81.4% -2.5 vs same-age |
|
| 2025 | 82.0% -0.3 vs same-age |
The raw rate normally falls as cars age. The “vs same-age” figure compares this cohort with all UK cars registered in the same year, so normal ageing is not mistaken for a bad model year.
What fails on a 2017 TX4
| # | System | Defects recorded | Share |
|---|---|---|---|
| 1 | Suspension | 414 | 43.8% |
| 2 | Lamps, reflectors and electrical equipment | 197 | 20.8% |
| 3 | Brakes | 130 | 13.7% |
| 4 | Noise, emissions and leaks | 64 | 6.8% |
| 5 | Tyres | 43 | 4.5% |
| 6 | Visibility | 36 | 3.8% |
All TX4 years compared
| Registration year | Tests | Pass rate | Vs same-age | Median mileage |
|---|---|---|---|---|
| 2009 | 1,733 | 64.8% | -1.6 pts | 286,046 |
| 2010 | 2,368 | 64.8% | -2.6 pts | 295,007 |
| 2011 | 2,811 | 68.8% | -0.5 pts | 262,229 |
| 2012 | 2,628 | 76.3% | +4.9 pts | 239,120 |
| 2013 | 2,927 | 80.5% | +7.0 pts | 221,726 |
| 2014 | 6,314 | 78.3% | +2.4 pts | 206,120 |
| 2015 | 6,200 | 81.5% | +2.8 pts | 184,124 |
| 2016 | 4,742 | 82.4% | +1.0 pts | 160,499 |
| 2017 (this page) | 1,671 | 82.8% | -1.3 pts | 141,423 |
- Free MOT history checkThe exact car’s failures, advisories and mileage trail — sellers can’t edit it
- Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
- XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
- Autel UK testersAutel professional-grade diagnostic testers
FAQs
Is a 2017 London Taxis Int TX4 reliable?
2017-registered examples passed 82.8% of their MOT tests (1,671 tests, 2023–2025), -1.3 points versus all UK cars registered in the same year. At roughly 9 years old with a median 141,423 miles, condition now varies car by car — always check the individual MOT history.
What mileage is too high for a 2017 TX4?
The median tested example shows 141,423 miles. Anything far beyond that isn't automatically bad — a motorway-mile car with consistent service records often beats a low-mileage school-run car — but price accordingly and scrutinise the mileage trail for gaps or drops.
Source: DVSA Anonymised MOT tests and results, 2023–2025 extracts (96 million Class 4 initial tests; retests excluded). Only vehicles old enough for a routine first MOT are included. Age-adjusted figures compare the model-year cohort with all vehicles of the same registration year tested in the same calendar year. Contains public sector information licensed under OGL v3.0.