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Kia Rio vs Kia Shuma sx: reliability comparison

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

Kia Rio
76%
MOT pass rate · 141,350 vehicles
More reliable
Kia Shuma sx
63%
MOT pass rate · 459 vehicles
Verdict: On MOT pass rate, the Kia Rio is the more reliable of the two — 76% pass first time versus 63%. It's one signal among several; check the full breakdown below.

Head to head

Measure Kia Rio Kia Shuma sx
MOT pass rate 76% ✓ 63%
MOT failure rate 24% ✓ 37%
Faults & advisories per test 1.8 ✓ 2.3
Dangerous-fault share 3% 0% ✓
Average mileage 76,214 mi 74,721 mi
Sample size (vehicles) 141,350 459

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 Shuma sx

  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. Nearside Front Tyre tread depth below requirements of 1.6mm (4.1.E.1)
  4. Offside Rear Tyre worn close to the legal limit (4.1.E.1)
  5. Nearside Front Tyre worn close to the legal limit (4.1.E.1)
  6. Parking brake lever has no reserve travel (3.1.6b)

Reliability FAQ

On MOT pass rate, the Kia Rio is the more reliable of the two — 76% pass first time versus 63%. It's one signal among several; check the full breakdown below.

Full Kia Rio report Full Kia Shuma sx 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.