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Kia Rio vs Kia Sephia: reliability comparison

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

Kia Rio
76%
MOT pass rate · 141,350 vehicles
Kia Sephia
59%
MOT pass rate · 18 vehicles
Verdict: On MOT pass rate the Kia Rio (76%) and Kia Sephia (59%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Head to head

Measure Kia Rio Kia Sephia
MOT pass rate 76% ✓ 59%
MOT failure rate 24% ✓ 41%
Faults & advisories per test 1.8 ✓ 2.5
Dangerous-fault share 3% 0% ✓
Average mileage 76,214 mi 97,658 mi
Sample size (vehicles) 141,350 18

Most common faults

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))

Kia Sephia

  1. Brake pipe slightly corroded (3.6.B.2c)
  2. Offside Rear Suspension component mounting prescribed area is excessively corroded (2.4.A.3)
  3. Suspension component mounting prescribed area is corroded but not considered excessive (2.4.A.3)
  4. Emissions not tested (7.0)
  5. Centre Exhaust has a major leak of exhaust gases (7.1.2)
  6. Non obligatory mirror damaged

Reliability FAQ

On MOT pass rate the Kia Rio (76%) and Kia Sephia (59%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.

Full Kia Rio report Full Kia Sephia 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.