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Kia Cerato lx vs Kia Rio: reliability comparison

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

Kia Cerato lx
72%
MOT pass rate · 97 vehicles
Kia Rio
76%
MOT pass rate · 141,350 vehicles
More reliable
Verdict: On MOT pass rate, the Kia Rio is the more reliable of the two — 76% pass first time versus 72%. It's one signal among several; check the full breakdown below.

Head to head

Measure Kia Cerato lx Kia Rio
MOT pass rate 72% 76% ✓
MOT failure rate 28% 24% ✓
Faults & advisories per test 0.5 ✓ 1.8
Dangerous-fault share 0% ✓ 3%
Average mileage 98,019 mi 76,214 mi
Sample size (vehicles) 97 141,350

Most common faults

Kia Cerato lx

  1. Parking brake: efficiency below requirements (3.7.B.7)
  2. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  3. Rear Brake pad(s) wearing thin (3.5.1g)
  4. Emissions not tested (7.0)
  5. Exhaust has a major leak of exhaust gases (7.1.2)
  6. Nearside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)

Kia Rio

  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 Front Tyre worn close to the legal limit (4.1.E.1)
  4. Offside Front Tyre worn close to the legal limit (4.1.E.1)
  5. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  6. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))

Reliability FAQ

On MOT pass rate, the Kia Rio is the more reliable of the two — 76% pass first time versus 72%. It's one signal among several; check the full breakdown below.

Full Kia Cerato lx report Full Kia Rio 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.