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Lexus Is 250 sr auto vs Lexus Nx: reliability comparison

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

Lexus Is 250 sr auto
83%
MOT pass rate · 106 vehicles
Lexus Nx
92%
MOT pass rate · 29,652 vehicles
More reliable
Verdict: On MOT pass rate, the Lexus Nx is the more reliable of the two — 92% pass first time versus 83%. It's one signal among several; check the full breakdown below.

Head to head

Measure Lexus Is 250 sr auto Lexus Nx
MOT pass rate 83% 92% ✓
MOT failure rate 17% 8% ✓
Faults & advisories per test 1.3 0.9 ✓
Dangerous-fault share 2% ✓ 3%
Average mileage 108,305 mi 54,657 mi
Sample size (vehicles) 106 29,652

Most common faults

Lexus Is 250 sr auto

  1. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  2. Nearside 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. Under-trays fitted obscuring some underside components
  5. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))

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))

Reliability FAQ

On MOT pass rate, the Lexus Nx is the more reliable of the two — 92% pass first time versus 83%. It's one signal among several; check the full breakdown below.

Full Lexus Is 250 sr auto report Full Lexus Nx 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.