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Toyota Yaris vs Toyota Yaris t4 hev: reliability comparison

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

Toyota Yaris
78%
MOT pass rate · 631,425 vehicles
Toyota Yaris t4 hev
92%
MOT pass rate · 2 vehicles
Verdict: On MOT pass rate the Toyota Yaris (78%) and Toyota Yaris t4 hev (92%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Toyota Yaris Toyota Yaris t4 hev
MOT pass rate 78% 92% ✓
MOT failure rate 22% 8% ✓
Faults & advisories per test 1.7 ✓ 1.8
Dangerous-fault share 2% 2%
Average mileage 85,387 mi 145,297 mi
Sample size (vehicles) 631,425 2

Most common faults

Toyota Yaris

  1. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  2. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  3. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Front 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))

Toyota Yaris t4 hev

  1. Offside Rear Child Seat fitted not allowing full inspection of adult belt
  2. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
  3. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Items removed from driver's view prior to test
  5. Nearside Rear Service brake binding but not excessively (1.2.1 (f))
  6. Rear os tyre cracking

Reliability FAQ

On MOT pass rate the Toyota Yaris (78%) and Toyota Yaris t4 hev (92%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Toyota Yaris report Full Toyota Yaris t4 hev 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.