CarCostCheck

Kia Stonic 2

Reliability, running costs, and MOT data across 3 years from 3,078 real MOT tests.

Avg Pass Rate

92%

Total Tests

3,078

Best Year

2020 (94%)

Years Covered

3

How reliable is the Kia Stonic 2?

vs national average+10% (82% avg)
vs Kia brand average+6% (86% avg)
Best to worst year spread5 percentage points
Reliability trendStable over years

Kia Stonic 2 by Year

YearPass RateTestsAvg Mileage
202289%20825,063 mi
202193%2,60722,704 mi
202094%26327,768 mi

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About the Kia Stonic 2

The Kia Stonic 2 has been tested 3,078 times in 2024 MOT data across 3 model years (2020 to 2022), with an average pass rate of 92%. That's comfortably above the national average of 82%, making it a reliable choice. Available as petrol.

Best and Worst Years

The 2020 model is the most reliable with a 94% pass rate from 263 tests. The 2022 model has the lowest at 89%. With just a 5 point spread, the Stonic 2 is consistently reliable regardless of year.

Reliability Trend

The KIA STONIC 2 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.

Mileage Across Years

The oldest model in our data (2020) averages 27,768 miles, while the newest (2022) averages 25,063 miles.

Compared to the Kia brand average of 86%, the Stonic 2 performs 6 points better, making it one of the more reliable options in the Kia range.

Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.