Kia Stonic Maxx
Reliability, estimated running costs, and MOT data across 2 model years from 1,192 MOT tests in 2024.
Avg Pass Rate
93%
Total Tests
1,192
Highest Pass Rate
2019 (93%)
Years Covered
2
About the Kia Stonic Maxx
The Kia Stonic Maxx was MOT tested 1,192 times in 2024 (DVSA data, retests included) across 2 model years (2019 to 2020), with an average pass rate of 93%. That's comfortably above the average of 82% across all models in our data. Our records list petrol versions.
Best and Worst Years
Of the years with at least 100 tests, the 2019 model has the highest pass rate at 93% from 417 tests. The 2020 model has the lowest at 92%. With just a 1 point gap, pass rates are similar across these years. Newer cars usually pass more often simply because they are younger.
Mileage Across Years
The oldest model in our data (2019) averages 31,634 miles, while the newest (2020) averages 26,987 miles.
Compared to the Kia brand average of 86%, the Stonic Maxx performs 7 points better, making it one of the more reliable options in the Kia range.
Estimated Running Costs
Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.
Full 2020 detailsHow reliable is the Kia Stonic Maxx?
Kia Stonic Maxx by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
Questions about the Kia Stonic Maxx
Is the Kia Stonic Maxx reliable?
Across its 2 model years in our data (2019 to 2020), the Kia Stonic Maxx averages a 93% MOT pass rate, from 1,192 tests (DVSA MOT data for tests in 2024, retests included). That's 11 points above the average of 82% across all models in the same data. The 2019 model has the highest pass rate of the years with at least 100 tests, at 93%.
Which year Kia Stonic Maxx has the best MOT pass rate?
Of the years with at least 100 tests, the 2019 Kia Stonic Maxx has the highest MOT pass rate at 93%, while the 2020 model has the lowest at 92%, a 1 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.
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