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Lexus Gs430 vs Lexus Rx: reliability comparison

MOT pass rates, common faults and mileage compared from real UK MOT data.

Lexus Gs430
80%
MOT pass rate · 905 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 80%. It's one signal among several; check the full breakdown below.

Head to head

Measure Lexus Gs430 Lexus Rx
MOT pass rate 80% 93% ✓
MOT failure rate 20% 7% ✓
Faults & advisories per test 1.6 0.8 ✓
Dangerous-fault share 2% ✓ 3%
Average mileage 128,036 mi 56,088 mi
Sample size (vehicles) 905 18,210

Most common faults

Lexus Gs430

  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. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Rear Brake pad(s) wearing thin (3.5.1g)
  6. Front Brake pad(s) wearing thin (3.5.1g)

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))

Reliability FAQ

On MOT pass rate, the Lexus Rx is the more reliable of the two — 93% pass first time versus 80%. It's one signal among several; check the full breakdown below.

Full Lexus Gs430 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.