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Lexus 300 vs Lexus Rx: reliability comparison

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

Lexus 300
79%
MOT pass rate · 7 vehicles
Lexus Rx
93%
MOT pass rate · 18,210 vehicles
Verdict: On MOT pass rate the Lexus 300 (79%) and Lexus Rx (93%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Lexus 300 Lexus Rx
MOT pass rate 79% 93% ✓
MOT failure rate 21% 7% ✓
Faults & advisories per test 0.9 0.8 ✓
Dangerous-fault share 1% ✓ 3%
Average mileage 147,223 mi 56,088 mi
Sample size (vehicles) 7 18,210

Most common faults

Lexus 300

  1. Parking brake: efficiency below requirements (3.7.B.7)
  2. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Parking brake lever has little reserve travel (3.1.6b)
  6. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))

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 300 (79%) and Lexus Rx (93%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Lexus 300 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.