London Taxis Int
Tx4
20,619 MOT tests analysed. runs below the UK fleet average — here's where Tx4s pass, fail, and end up on the retest sheet.
That's 10.0 points below the UK fleet average across our 1,984 tracked models — buyers should expect more first-time fails than the typical UK car.
Pass
67.5%
Pass-after-fix
14.2%
Fail
17.5%
Avg miles
218,332
Pass + Pass-after-fix + Fail = 100%
Some examples of this model are borderline — a small number of diesels were certified Euro 6 before September 2015. Check your registration on the government's ULEZ checker to be certain. Daily charges if driven in the zone: London £12.50 · Birmingham £8.00 · Bristol £9.00 .
The picture
London Taxis Int Tx4: challenging MOT record across 16,680 tests
The London Taxis Int Tx4 is a diesel-powered car sold in the UK market across multiple generations, covering a broad date range in the test population.
MOT data from 16,680 tests puts this car on a 69.5% first-time pass rate, well below the UK fleet average. Average mileage at test is 213,333 miles. The most common fail item is worn suspension pin or bush, followed by worn suspension pin or bush.
The Tx4's pass rate warrants caution in the used market. Factor in likely first-test remedial work on the common failure items and get a pre-purchase inspection that covers the specific items this car trips on most.
Top ten reasons for rejection.
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- 01
A suspension pin, bush or joint excessively worn
1,299 occurrences · 6.3% of tests
- 02
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources
523 occurrences · 2.5% of tests
- 03
A suspension pin, bush or joint excessively worn
517 occurrences · 2.5% of tests
- 04
Parking brake efficiency below minimum requirement
468 occurrences · 2.3% of tests
- 05
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view
426 occurrences · 2.1% of tests
- 06
A shock absorber bush excessively worn
319 occurrences · 1.5% of tests
- 07
Lamp emitted colour, position or intensity not in accordance with the requirements
319 occurrences · 1.5% of tests
- 08
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
314 occurrences · 1.5% of tests
- 09
Tyre tread depth not in accordance with the requirements
268 occurrences · 1.3% of tests
- 10
A spring or spring component fractured or seriously weakened
252 occurrences · 1.2% of tests
Counts cover Major and Dangerous defects logged at test. Advisory items excluded so this shows why a car was rejected, not just what the tester flagged in passing.
Worst-case fix budget · top 3 failures
£168–£515
If every one of this Tx4's most-logged Major fails hit at the same MOT, that's the real-world UK garage range. Reality is usually one or two items, not all of them. Open the estimator →
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Buying or keeping a Tx4?
Use the failure ranking as a pre-test checklist or a haggling lever. Treat the headline pass rate as a fleet-wide trend, not a guarantee on any individual car.
If you own a Tx4 and your last MOT looked nothing like the ranked failures above, that's normal — individual cars vary widely. The ranking shows the patterns testers flag most often across the country.