2016 London Taxis Int Tx4 — MOT failures & pass rate
9,323 MOT tests on the 2016 London Taxis Int Tx4 are in this dataset, and 85.2% of them passed. All cars of a similar age fail at 14.5%, so the 2016 Tx4 sits squarely on the average. Failures cluster in lighting & signalling, suspension and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (12.8%) and suspension (12.5%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are pins and bushes, headlamp aim and ball joint — pins and bushes alone was recorded 749 times.
Condition tracks the odometer closely. Failures run at 22.4% in the 0-30k band and 16.6% in the 150k+ band, a 5.8-point spread.
Advisories point at the next bill rather than this one: suspension was flagged on 22.7% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 12.8% | 1,195 |
| 2 | Suspension | 12.5% | 1,166 |
| 3 | Brakes | 6.4% | 598 |
| 4 | Emissions & environmental | 4.7% | 440 |
| 5 | Visibility | 3.8% | 358 |
| 6 | Tyres | 3.2% | 298 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Pins and bushes | 749 |
| 2 | Headlamp aim | 480 |
| 3 | Ball joint | 361 |
| 4 | Malfunction indicator lamp | 325 |
| 5 | Position lamp | 315 |
| 6 | Shock absorbers | 314 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 22.7% | 2,117 |
| 2 | Brakes | 13.6% | 1,263 |
| 3 | Tyres | 11.5% | 1,071 |
| 4 | Emissions & environmental | 10.0% | 930 |
| 5 | Steering | 7.1% | 664 |
| 6 | Lighting & signalling | 4.9% | 454 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 49 | 22.4% |
| 30-60k | 231 | 10.4% |
| 60-90k | 935 | 10.5% |
| 90-120k | 1,905 | 13.8% |
| 120-150k | 2,194 | 14.4% |
| 150k+ | 4,001 | 16.6% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,814 | 14.3% |
| 2022 | 1,880 | 13.9% |
| 2023 | 1,933 | 15.0% |
| 2024 | 1,865 | 15.5% |
| 2025 | 1,831 | 15.3% |
What to check before buying a 2016 Tx4
On a 2016 Tx4, lighting & signalling is what the MOT record says goes wrong most — it appeared in 12.8% of tests. Check these areas before you commit.
- Lighting & signalling (12.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (12.5% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
- Brakes (6.4% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2016 London Taxis Int Tx4s pass their MOT?
85.2% of the 9,323 2016 London Taxis Int Tx4 MOT tests in this dataset passed — a 14.8% fail rate.
What is the most common MOT failure on a 2016 London Taxis Int Tx4?
Lighting & signalling, recorded in 12.8% of tests, followed by suspension (12.5%).
Does the 2016 Tx4 get worse with mileage?
Its MOT fail rate rises from 22.4% in the 0-30k band to 16.6% in the 150k+ band.
Methodology & source. Based on 9,323 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.