London Taxis International TX4 years to avoid? MOT pass rate by year

6,830 initial MOT tests in 2025 on cars first used 2014–2017 · DVSA data · For guidance only · How we count

All 4 London Taxis International TX4 years have MOT pass rates below the average for vehicles first used in the same year.

Below the average for their first-use year2014–2017
Above the average for their first-use yearNone
Can't be told apart from averageNone

The MOT pass rate is one signal, not the whole story. An MOT checks safety and emissions on the day of the test. It doesn't record gearbox or engine faults, and a pass rate also reflects mileage and upkeep, so the table shows median mileage too. Whatever the year, the car in front of you matters more than its model's average.

67.6%passed first time

First-time pass rate, all years together: initial tests passed with no repairs. 95% range 66.5% to 68.7%.

London Taxis International TX4, all years67.6%
Same-age average, all vehicles72.5%

In 2025, 67.6% of the 6,830 initial MOT tests on London Taxis International TX4 cars were passed with no repairs. The same-age average, for all vehicles first used in the same years, was 72.5%. That is 4.8 points below the same-age average.

Check a specific TX4

Its own MOT history, free.

London Taxis International TX4 MOT pass rate by year

Year is when the car was first used. Older vehicles fail more often, so each year is compared with all vehicles first used that year.

Year	Testsmedian miles	Passed first time	Against all vehicles that year
2017age 8	1,013161,400	72.5%±2.9	−5.7 ptsall: 78.2%
2016age 9	1,571181,100	69.4%±2.4	−5.5 ptsall: 74.9%
2015age 10	2,074205,600	67.7%±2.1	−4.2 ptsall: 71.9%
2014age 11	2,172223,900	64.0%±2.1	−4.6 ptsall: 68.6%

Tests are initial MOT tests in 2025, not retests. Median miles is the middle odometer reading at the test: half had more, half had less. ± is the 95% margin of error in points (Wilson interval): a difference smaller than that could be chance. Years without a link have fewer than 10,000 tests, so they are listed here but don't have their own page.

When a car's mileage doesn't add up

Common TX4 problems at the MOT

Share of the 2,211 failed tests with a fault in each area, all years together. A test can count in more than one area, so these add up to more than 100%.

Lights and electrics51.9%
Suspension46.7%
Brakes25.4%

MOT records show roadworthiness faults, not engine or gearbox problems. Each year page compares that year's failure areas with all vehicles first used in the same year.

Most common MOT failures on the London Taxis International TX4

The defects recorded most often at the 2,211 failed initial tests on London Taxis International TX4 cars, all years together, in the DVSA's own words. Each share is of failed tests, and a failed test can have more than one defect.

Defect	Share of failed tests	All vehicles, same age
Suspension arm pin or bush excessively wornSuspension	20.6%455 tests	4.7%
Position lamp not workingLights and electrics	11.6%256 tests	5.7%
Malfunction indicator lamp inoperative or indicates a malfunctionNoise, emissions, leaks	10.4%231 tests	5.7%
Headlamp not working on dipped beamLights and electrics	8.5%189 tests	5.0%
Suspension arm ball joint excessively wornSuspension	8.2%181 tests	5.5%
Parking brake efficiency below requirementsBrakes	7.5%166 tests	3.0%
Headlamp aim too lowLights and electrics	7.5%166 tests	3.9%
Shock absorber has an excessively worn bushSuspension	7.3%161 tests	0.5%
Headlamp aim too highLights and electrics	6.6%145 tests	2.6%
Headlamp aim projected beam image is obviously incorrectLights and electrics	6.4%142 tests	3.1%

These are failures recorded at initial MOT tests in 2025. Retests are not counted. "All vehicles, same age" is the same defect's share of failed tests for all vehicles first used in the same years, weighted by the TX4's failed tests in each year. How we count

What to check when viewing a TX4

Based on the areas where London Taxis International TX4 MOT tests fail most often. These are general checks anyone can do, not a mechanical inspection.

Lights and electrics
In 51.9% of failed TX4 tests
- Ask the seller to help you check every light: dipped and main beam, brake lights, indicators, fog lights and the number plate lamp.
- Look for cracked, misted or yellowed headlight lenses.
- Warning lights on the dashboard should come on with the ignition and go out once the engine starts.
Suspension
In 46.7% of failed TX4 tests
- Push down hard on each corner. The car should rise once and settle, not keep bouncing.
- On the test drive, listen for knocks or clunks over speed bumps and potholes.
- The car should sit level when parked on flat ground.
Brakes
In 25.4% of failed TX4 tests
- On a clear road, brake firmly. The car should stop in a straight line without juddering or pulling to one side.
- Check the handbrake holds the car on a slope.
- Look through the wheels at the brake discs for deep grooves or a raised lip at the edge.

Then read the car's own MOT history. Advisories in the same area at several tests are worth asking about.

Check a TX4's MOT history

London Taxis International TX4 questions

Which London Taxis International TX4 years have lower MOT pass rates?

Compared with all vehicles first used in the same year, these model years have below-average MOT pass rates: 2014–2017. None is clearly above average. A pass rate is one signal: it also reflects mileage and upkeep, and doesn't record engine or gearbox faults.

Is the London Taxis International TX4 reliable?

MOT results show only part of the picture. In 2025, 67.6% of initial MOT tests on London Taxis International TX4 cars were passed with no repairs, against a same-age average of 72.5%. That is 4.8 points below average. An MOT checks safety and emissions on the day of the test. It doesn't measure breakdowns, engine or gearbox faults, or repair costs.

What are the most common London Taxis International TX4 problems at the MOT?

The most common failure areas are lights and electrics (in 51.9% of failed tests), suspension (in 46.7% of failed tests) and brakes (in 25.4% of failed tests). A failed test can count in more than one area.

What mileage is normal for a 10-year-old London Taxis International TX4?

At their 2025 MOT tests, London Taxis International TX4 cars first used in 2015, about 10 years old, had a median of 205,600 miles. Half had more and half had less.

How do I check a specific TX4's MOT history?

Enter its registration in our free check. It lists that car's own MOT results, the faults and advisories recorded and the mileage at each test, and flags repeated advisories and mileage that goes down.

Check a car's MOT history for free

What MOT data can't tell you about any London Taxis International TX4

Outstanding finance, write-offs, theft and plate changes aren't in MOT records. For a particular car, you need a history check.

Compare history checks What MOT history doesn't show

Cars ranked by MOT pass rate, by age

Source: DVSA anonymised MOT tests, 2025. For guidance only: these figures describe all London Taxis International TX4 cars tested, not the one you're looking at. How we count