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MOT statistics · 2023 tests

London Taxis International TX4 MOT pass rate, common failures and mileage

In 2023, 74.7% of 13,481 MOT tests on the London Taxis International TX4 ended in a pass, 1.8 points below the 76.5% average for all cars.

Pass rate
74.7%
All cars 76.5%
Tests
13,481
Initial MOTs in 2023
Mileage at 10
223k
Median; middle half 187k to 255k

Pass rate and mileage by age

Each row covers the London Taxis International TX4 MOT tests at that age. Mileage shows the median and the middle half of odometer readings, from the 25th to the 75th percentile.

AgePass rateMileage
5207 tests
85.0%
115,000 · 91k to 141k
61,317 tests
82.4%
133,000 · 109k to 159k
71,793 tests
81.5%
157,000 · 131k to 183k
82,104 tests
79.4%
175,000 · 143k to 209k
91,859 tests
76.4%
199,000 · 169k to 231k
101,298 tests
81.0%
223,000 · 187k to 255k
111,201 tests
74.2%
243,000 · 205k to 287k
121,263 tests
67.1%
275,000 · 233k to 321k
13827 tests
60.2%
279,000 · 225k to 341k
14655 tests
57.1%
287,000 · 219k to 347k
15557 tests
59.8%
293,000 · 217k to 365k
16400 tests
65.5%
301,000 · 233k to 369k
TX4 pass rateAll cars at that ageMiddle half of mileages

Most common MOT failures and advisories

How often each item came up, per 100 MOT tests on the London Taxis International TX4. Advisories are things the tester noted that did not fail the car, often wear that will need attention soon. Follow an item to see what it means and how serious it is.

Failures

Brake performance
Parking brake efficiency below minimum requirement
4.1in 100 tests
Side and tail lights
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
3.8in 100 tests
Coil springs
A spring or spring component fractured or seriously weakened
3.0in 100 tests
Headlights
A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED
2.3in 100 tests
Tyre tread
Tyre tread depth not in accordance with the requirements
2.2in 100 tests
Screen washers
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
2.1in 100 tests
Track rod ends
A steering ball joint with excessive wear or free play
1.9in 100 tests
Brake lights
Stop lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
1.9in 100 tests

Advisories and minor defects

Brake pipes
Brake pipe damaged or excessively corroded
4.4in 100 tests
Wheel bearings
A wheel bearing with excessive play
3.9in 100 tests
Brake discs
Brake disc or drum excessively weakened, insecure or fractured
3.6in 100 tests
Coil springs
A spring or spring component fractured or seriously weakened
3.3in 100 tests
Number plate lights
A rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources (minor defect)
3.0in 100 tests
Shock absorbers
A shock absorber bush excessively worn
2.6in 100 tests
Brake pads
A brake lining or pad worn below 1.5mm
2.4in 100 tests
Windscreen
Windscreen or window damaged or seriously discoloured but not adversely affecting driver's view (minor defect)
2.3in 100 tests

What to check on a used TX4

The parts that come up most often in London Taxis International TX4 MOTs, and how to look at them on a viewing.

  1. Brake pipes and hoses
    Look underneath at the metal brake pipes for heavy rust, and at the rubber hoses for cracks or bulges.
  2. Braking
    On the test drive, brake firmly on a straight road: the car should stop straight without pulling, and the handbrake should hold it on a slope.
  3. Wheel bearings
    On the test drive, listen for a hum or rumble that rises with speed.
  4. Lights
    Walk round with every light on, and ask someone to press the brake pedal so you can see both brake lights.
  5. Brake discs and pads
    Ask when the discs and pads were last replaced, and look through the wheel for a raised lip on the edge of the disc.

Check a specific TX4

Fleet averages only go so far. Enter the registration to see that car's own MOT history, mileage record and current condition, free.

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Questions

What is the MOT pass rate of the London Taxis International TX4?
In 2023, 74.7% of 13,481 initial MOT tests on the London Taxis International TX4 ended in a pass, against 76.5% for all cars and light vans.
What fails most often on a London Taxis International TX4 MOT?
The most common failures were brake performance (4.1 in 100 tests), side and tail lights (3.8 in 100 tests), coil springs (3.0 in 100 tests).
What is a normal mileage for a 10-year-old London Taxis International TX4?
At 10 years old, the median London Taxis International TX4 at its MOT had covered 223,000 miles, and the middle half had between 187,000 and 255,000 miles.
What do MOT testers most often advise on a London Taxis International TX4?
The most common advisories were brake pipes (4.4 in 100 tests), wheel bearings (3.9 in 100 tests), brake discs (3.6 in 100 tests).

Other London Taxis International models

Overall MOT pass rate in 2023. Compare all London Taxis International models or see every make.

TX474.7%

How these figures are made. We counted every initial MOT test (not retests) of cars and light vans in Great Britain in 2023 from the DVSA anonymised MOT dataset, 33,842,940 tests in all. Pass rate is the share of initial tests that ended in a pass, counting faults fixed during the test. Age is whole years from first registration to the test, so a car having its first MOT a few weeks early counts as 2.

Like-for-like pass rates average each model's pass rate at ages 3 to 10 with the same age mix for every model, so a model is not flattered by a young fleet or penalised by an old one. Models are grouped by the first word of the DVSA model name, and names that cover several models are left out.

Contains public sector information licensed under the Open Government Licence v3.0. RegTail's analysis of the DVSA anonymised MOT dataset, 2023 tests.