Lexus Rx300 vs Lexus Is: MOT reliability compared
Updated 05 September 2026.
12.9%
Lexus Is MOT failure rate, 8.1 pts lower than Lexus Rx300
Lexus Is is the more reliable MOT performer: 12.9% of Lexus Is MOTs fail versus 21.0% for Lexus Rx300, a 8.1 point gap.
| Metric | Lexus Rx300 | Lexus Is |
|---|---|---|
| MOT failure rate | 21.0% | 12.9% |
| Tests analysed | 236,697 | 181,237 |
| Most common failure | Brakes (39.3%) | Tyres (38.3%) |
Questions and answers
Which is more reliable, Lexus Rx300 or Lexus Is?
Lexus Is is the more reliable MOT performer: 12.9% of Lexus Is MOTs fail versus 21.0% for Lexus Rx300, a 8.1 point gap.
What is the MOT failure rate of the Lexus Rx300?
21.0% of Lexus Rx300 MOT tests result in a failure, from 236,697 tests.
What is the MOT failure rate of the Lexus Is?
12.9% of Lexus Is MOT tests result in a failure, from 181,237 tests.