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Lexus Rx vs Lexus Sc430: 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
82%
MOT pass rate · 2,394 vehicles
Verdict: On MOT pass rate, the Lexus Rx is the more reliable of the two — 93% pass first time versus 82%. It's one signal among several; check the full breakdown below.

Head to head

Measure Lexus Rx Lexus Sc430
MOT pass rate 93% ✓ 82%
MOT failure rate 7% ✓ 18%
Faults & advisories per test 0.8 ✓ 1.3
Dangerous-fault share 3% 2% ✓
Average mileage 56,088 mi 96,560 mi
Sample size (vehicles) 18,210 2,394

Most common faults

Lexus Rx

  1. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  4. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  5. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

Lexus Sc430

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  3. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Under-trays fitted obscuring some underside components
  6. Front Brake pad(s) wearing thin (3.5.1g)

Reliability FAQ

On MOT pass rate, the Lexus Rx is the more reliable of the two — 93% pass first time versus 82%. It's one signal among several; check the full breakdown below.

Full Lexus Rx report Full Lexus Sc430 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.