KIA STONIC 2 (2021)
Running costs, common problems, and reliability data based on 2,607 real MOT tests in 2024.
MOT Pass Rate
93%
Total Tests (2024)
2,607
Avg Mileage
22,704 mi
Est. Annual Cost
£1,400
Is the 2021 KIA STONIC 2 reliable?
Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the KIA brand average of 86%.
At 3 years old, 93% of KIA STONIC 2s from 2021 passed their MOT first time in 2024. That's based on 2,607 tests across the UK. The average mileage at this age is 22,704 miles.
How does the 2021 KIA STONIC 2 compare?
Mileage Analysis
The average 2021 KIA STONIC 2 has 22,704 miles on the clock, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
Best year to buy a KIA STONIC 2?
The most reliable year is the 2020 model with a 94% MOT pass rate, while the 2022 model has the lowest at 89%. The 2021 sits between the two at 93%.
How much does a 2021 KIA STONIC 2 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
KIA STONIC 2 by Year
Checking a specific KIA STONIC 2?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 KIA STONIC 2
The 2021 KIA STONIC 2 is a city car with a 998cc petrol engine. 2,607 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2021, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 22,704 miles at 3 years old, KIA STONIC 2 owners drive about as much as the UK average.
2021 KIA STONIC 2 Fuel Costs
The modest 998cc petrol engine keeps fuel costs low, which is a real advantage for a city car. Expect around 50 mpg in mixed driving, which works out to roughly £955 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 KIA STONIC 2?
Total estimated annual running cost is £1,400 (£117/month), broken down as £955 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
KIA STONIC 2 Reliability Trend
The KIA STONIC 2 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2021 KIA STONIC 2
At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet. If you're flexible on year, the 2020 model has the highest pass rate at 94%.
Alternatives to the 2021 KIA STONIC 2
The KIA STONIC 2 is actually the most reliable option among similar petrol city cars from this era. Here are comparable petrol cars with similar engines:
- FORD FIESTA (2019) 91% pass rate (-2%) from 124,950 tests
- VOLKSWAGEN GOLF (2019) 92% pass rate (-1%) from 89,653 tests
- VAUXHALL CORSA (2019) 88% pass rate (-5%) from 68,639 tests
- AUDI A3 (2019) 92% pass rate (-1%) from 41,215 tests