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Kia Picanto vs Kia Stonic maxx s-a: reliability comparison

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

Kia Picanto
77%
MOT pass rate · 230,483 vehicles
Kia Stonic maxx s-a
89%
MOT pass rate · 295 vehicles
More reliable
Verdict: On MOT pass rate, the Kia Stonic maxx s-a is the more reliable of the two — 89% pass first time versus 77%. It's one signal among several; check the full breakdown below.

Head to head

Measure Kia Picanto Kia Stonic maxx s-a
MOT pass rate 77% 89% ✓
MOT failure rate 23% 11% ✓
Faults & advisories per test 1.7 0.8 ✓
Dangerous-fault share 3% ✓ 6%
Average mileage 57,777 mi 34,495 mi
Sample size (vehicles) 230,483 295

Most common faults

Kia Picanto

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Nearside 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. Oil leak, but not excessive (8.4.1 (a) (i))
  6. Offside Front Tyre worn close to the legal limit (4.1.E.1)

Kia Stonic maxx s-a

  1. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  2. Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
  3. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
  4. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
  5. Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
  6. Nearside Rear Child Seat fitted not allowing full inspection of adult belt

Reliability FAQ

On MOT pass rate, the Kia Stonic maxx s-a is the more reliable of the two — 89% pass first time versus 77%. It's one signal among several; check the full breakdown below.

Full Kia Picanto report Full Kia Stonic maxx s-a 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.