Lexus Rx vs Lexus Sc430 auto: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Lexus Rx
93%
MOT pass rate · 18,210 vehicles
More reliable
Lexus Sc430 auto
79%
MOT pass rate · 48 vehicles
Verdict: On MOT pass rate, the Lexus Rx is the more reliable of the two — 93% pass first time versus 79%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Lexus Rx | Lexus Sc430 auto |
|---|---|---|
| MOT pass rate | 93% ✓ | 79% |
| MOT failure rate | 7% ✓ | 21% |
| Faults & advisories per test | 0.8 | 0.7 ✓ |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 56,088 mi | 104,308 mi |
| Sample size (vehicles) | 18,210 | 48 |
Most common faults
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))
Lexus Sc430 auto
- Oil leak, but not excessive (8.4.1 (a) (i))
- Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Front Windscreen wiper does not clear the windscreen effectively (8.2.2)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Engine covers fitted obscuring some components in the engine bay
Reliability FAQ
On MOT pass rate, the Lexus Rx is the more reliable of the two — 93% pass first time versus 79%. It's one signal among several; check the full breakdown below.
Full Lexus Rx report Full Lexus Sc430 auto 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.