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Lexus Ct vs Lexus Rx400: reliability comparison

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

Lexus Ct
87%
MOT pass rate · 32,251 vehicles
More reliable
Lexus Rx400
81%
MOT pass rate · 100 vehicles
Verdict: On MOT pass rate, the Lexus Ct is the more reliable of the two — 87% pass first time versus 81%. It's one signal among several; check the full breakdown below.

Head to head

Measure Lexus Ct Lexus Rx400
MOT pass rate 87% ✓ 81%
MOT failure rate 13% ✓ 19%
Faults & advisories per test 1.1 ✓ 1.8
Dangerous-fault share 4% 2% ✓
Average mileage 85,458 mi 146,832 mi
Sample size (vehicles) 32,251 100

Most common faults

Lexus Ct

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
  4. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  5. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  6. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Lexus Rx400

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Rear Sub-frame corroded but not seriously weakened (5.3.3 (b) (i))
  5. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Front Registration plate deteriorated but not likely to be misread (0.1 (b))

Reliability FAQ

On MOT pass rate, the Lexus Ct is the more reliable of the two — 87% pass first time versus 81%. It's one signal among several; check the full breakdown below.

Full Lexus Ct report Full Lexus Rx400 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.