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Lexus Nx vs Lexus Rh400: reliability comparison

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

Lexus Nx
92%
MOT pass rate · 29,652 vehicles
Lexus Rh400
79%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Lexus Nx (92%) and Lexus Rh400 (79%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Lexus Nx Lexus Rh400
MOT pass rate 92% ✓ 79%
MOT failure rate 8% ✓ 21%
Faults & advisories per test 0.9 ✓ 2.0
Dangerous-fault share 3% ✓ 6%
Average mileage 54,657 mi 149,086 mi
Sample size (vehicles) 29,652 2

Most common faults

Lexus Nx

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

Lexus Rh400

  1. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  2. Nearside Front Lower Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))
  3. Offside Front Lower Suspension arm pin or bush worn but not resulting in excessive movement (5.3.4 (a) (i))
  4. Rear Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
  5. Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii))
  6. off side front tyre void of tread on inner edge

Reliability FAQ

On MOT pass rate the Lexus Nx (92%) and Lexus Rh400 (79%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Lexus Nx report Full Lexus Rh400 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.