Lexus Is 250 auto vs Lexus Rx: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Lexus Is 250 auto
81%
MOT pass rate · 59 vehicles
Lexus Rx
93%
MOT pass rate · 18,210 vehicles
More reliable
Verdict: On MOT pass rate, the Lexus Rx is the more reliable of the two — 93% pass first time versus 81%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Lexus Is 250 auto | Lexus Rx |
|---|---|---|
| MOT pass rate | 81% | 93% ✓ |
| MOT failure rate | 19% | 7% ✓ |
| Faults & advisories per test | 1.4 | 0.8 ✓ |
| Dangerous-fault share | 3% | 3% |
| Average mileage | 114,797 mi | 56,088 mi |
| Sample size (vehicles) | 59 | 18,210 |
Most common faults
Lexus Is 250 auto
- Under-trays fitted obscuring some underside components
- Rear Brake pad(s) wearing thin (3.5.1g)
- Engine covers fitted obscuring some components in the engine bay
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
Lexus Rx
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
Reliability FAQ
On MOT pass rate, the Lexus Rx is the more reliable of the two — 93% pass first time versus 81%. It's one signal among several; check the full breakdown below.
Full Lexus Is 250 auto report Full Lexus Rx report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.