Kia Stonic: MOT pass rate and reliability data

The Kia Stonic passes its MOT first time more often than the average UK car, by 13.2 percentage points. These figures come from the DVSA's full year of anonymised MOT results, covering 19,189 individual Kia Stonic tests. Nothing here is an estimate or a survey.

The numbers

What this means if you are buying one

A 89.9% first-time pass rate means roughly 10 in every 100 Kia Stonics presented for MOT fail on the first attempt. That is better than average, so a well-kept example is a reasonably safe used buy. The average Kia Stonic tested had covered 35,292 miles and was built around 2019.

What this means at salvage auction

Pass rate is a proxy for what a car costs to keep on the road. On a Kia Stonic bought as a repairable salvage, the mechanical side is less likely to spring surprises, so your repair estimate should hold up reasonably well.

Before you bid: run the lot through the analyzer, check the car's own record, check the mileage, decode the VIN, and if it carries a marker use the write-off value calculator. Or compare it against another model.

Looking at a specific Kia Stonic rather than the model in general? The free check covers its MOT and mileage history, and the full HPI report confirms the insurance write-off category, outstanding finance and whether it is recorded stolen, from licensed data for 5 credits. Already own one that has been damaged? Work out whether fixing it beats selling it with the repair or scrap calculator, and see what damaged Kia Stonics actually sold for at UK salvage auction.

Most common MOT failures on a Kia Stonic

1. a brake lining or pad worn below 1.5mm, 2.3% of tests (1.47x the national rate for this defect)
2. Wiper blade missing or obviously not clearing the windscreen, 1.8% of tests (1.33x the national rate for this defect)
3. Tyre tread depth not in accordance with the requirements, 1.4% of tests
4. A tyre seriously damaged, 0.9% of tests
5. Windscreen washers not working or not providing sufficient fluid to clear the windscreen, 0.6% of tests
6. A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LED, 0.6% of tests
7. Engine MIL illuminated indicating a malfunction, 0.3% of tests
8. Brake disc or drum significantly and obviously worn, 0.3% of tests
9. A tyre cords visible or damaged, 0.2% of tests
10. A suspension joint dust cover missing or no longer prevents the ingress of dirt etc, 0.2% of tests

From 28,751 DVSA-tracked Kia Stonic tests, 2024. DVSA testers marked 6.61% of these flagged Kia Stonic defects as "dangerous", meaning the tester judged the car unsafe to drive away, against 4.97% nationally.

Kia Stonic pass rate by model year

Pass rates fall steadily as cars age, so the model year matters as much as the model. First-time pass rate for each Kia Stonic year:

• 2017 Kia Stonic - 87.8% first-time pass, 706 tests
• 2018 Kia Stonic - 88.8% first-time pass, 6,849 tests
• 2019 Kia Stonic - 90.1% first-time pass, 7,800 tests
• 2020 Kia Stonic - 93.1% first-time pass, 3,636 tests

Kia Stonic by fuel type

Diesel and petrol versions of the same car fail on different things, so the fuel type moves the number:

• Petrol Kia Stonic - 90.6% first-time pass, 16,811 tests
• Diesel Kia Stonic - 86.4% first-time pass, 2,320 tests

Other Kia models

• Kia Sportage - 79.4%
• Kia Picanto - 75.7%
• Kia Ceed - 71.6%
• Kia Rio - 74.3%
• Kia Niro - 90.3%
• Kia Venga - 78.4%
• Kia Sorento - 72.6%
• Kia Soul - 73.7%

Models with a similar pass rate

• BMW 430i M Sport Auto - 90%
• Mazda Cx-5 Se-L - 90%
• Hyundai Ioniq - 89.9%
• Porsche Cayman - 89.9%
• Volkswagen Polo Match Evo - 89.9%
• Kia Niro 4 Ev - 89.9%

If this car is a salvage or write-off

• What does Cat N mean? Category N explained
• What does Cat S mean? Category S explained
• Cat S vs Cat N: the real differences

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All 2,005 models ranked by MOT pass rate