Most reliable Lexus: MOT failure rates ranked
Updated 05 September 2026.
5.8%
Lexus Ux, the most reliable Lexus
The most reliable Lexus on MOT failure rate is the Lexus Ux, at 5.8% failures across 56,489 tests.
| Rank | Model | MOT failure rate | Tests |
|---|---|---|---|
| 1 | Lexus Ux | 5.8% | 56,489 |
| 2 | Lexus Es | 6.1% | 16,358 |
| 3 | Lexus Nx | 8.2% | 186,572 |
| 4 | Lexus Rx | 8.6% | 141,282 |
| 5 | Lexus Rc | 9.7% | 16,892 |
| 6 | Lexus Gs | 11.5% | 42,221 |
| 7 | Lexus Ls600h | 11.9% | 7,691 |
| 8 | Lexus Is | 12.9% | 181,237 |
| 9 | Lexus Is250c | 12.9% | 8,399 |
| 10 | Lexus Ct | 13.3% | 325,037 |
| 11 | Lexus Ls | 14.0% | 9,517 |
| 12 | Lexus Ls460 | 14.4% | 6,825 |
| 13 | Lexus Rx450h | 16.2% | 116,896 |
| 14 | Lexus Is250 | 16.8% | 214,779 |
| 15 | Lexus Ls430 | 17.0% | 45,461 |
Questions and answers
What is the most reliable Lexus at MOT?
The most reliable Lexus on MOT failure rate is the Lexus Ux, at 5.8% failures across 56,489 tests.
Which Lexus fails its MOT most often?
The Lexus Ls400 has the highest MOT failure rate of the Lexus range, at 25.2%.