2011 London Taxis International Tx4: MOT pass rate and reliability
63.6% of 2011 London Taxis International Tx4s pass the MOT first time, measured across 821 DVSA tests on that model year alone. The average one had covered 268,430 miles.
How the 2011 compares
- Against all London Taxis International Tx4s (75.7%, 11,190 tests): -12.1 points
- Against all 2011 cars (68.7%): -5.1 points
- National first-time pass rate, all cars and years: 77%
Every London Taxis International Tx4 model year
Pass rates fall as cars age, so the only fair comparison for a 2011 car is other cars of the same age. The full run for the London Taxis International Tx4:
| Year | Pass rate | Tests | Avg mileage |
|---|---|---|---|
| 2007 | 61.4% | 402 | 293,198 |
| 2008 | 61.6% | 333 | 284,383 |
| 2009 | 61.4% | 568 | 286,644 |
| 2010 | 61.9% | 727 | 302,494 |
| 2011 | 63.6% | 821 | 268,430 |
| 2012 | 76% | 758 | 247,557 |
| 2013 | 82.6% | 1,193 | 228,820 |
| 2014 | 78.4% | 2,140 | 209,051 |
| 2015 | 81.8% | 2,079 | 187,451 |
| 2016 | 81.9% | 1,577 | 165,978 |
| 2017 | 81.5% | 547 | 145,332 |
What this means if you are buying a 2011 Tx4
The 2011 is a weaker year for this model, passing 12.1 points less often than the London Taxis International Tx4 average. Some of that is simply age, so compare it against the 2011 figure for all cars above rather than against newer examples. Check the exact car with the free MOT history checker before you buy, and run its VIN and mileage through our free VIN decoder and clocking check.
What a 15-year-old car fails on
A 2011 car is 15 years old now, and age drives the failure mix more than the badge does. Across all cars tested, these are the categories that actually cause failures:
- Lights and electrical: 10.36% of all cars tested
- Suspension: 8.65% of all cars tested
- Tyres: 6.23% of all cars tested
- Brakes: 6.1% of all cars tested
- Visibility: wipers, washers, glass: 4.65% of all cars tested
- Body, chassis and structure: 3.18% of all cars tested
That is very high mileage. Clutches, dual-mass flywheels and head gaskets have usually been through at least one repair by this point, so ask for evidence rather than assume the car is original everywhere. On a 2011 London Taxis International Tx4 the average at test was 268,430 miles, so treat anything far above that as a car that has worked harder than its peers, and anything far below as one worth checking for the faults that come from standing still.
The strongest year for this model is 2013 at 82.6%, and the weakest in our data is 2007 at 61.4%. That 21.2 point spread across the model's life is why comparing a 2011 car against a newer one tells you very little.