KIA RIO 3 MHEV (2021)
Running costs, common problems, and reliability data based on 803 real MOT tests in 2024.
MOT Pass Rate
93%
Total Tests (2024)
803
Avg Mileage
22,594 mi
Est. Annual Cost
£1,400
Is the 2021 KIA RIO 3 MHEV 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 RIO 3 MHEVs from 2021 passed their MOT first time in 2024. That's based on 803 tests across the UK. The average mileage at this age is 22,594 miles.
How does the 2021 KIA RIO 3 MHEV compare?
Mileage Analysis
The average 2021 KIA RIO 3 MHEV has 22,594 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 RIO 3 MHEV?
The most reliable year is the 2022 model with a 97% MOT pass rate, while the 2020 model has the lowest at 91%. The 2021 sits between the two at 93%.
How much does a 2021 KIA RIO 3 MHEV 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 RIO 3 MHEV by Year
Checking a specific KIA RIO 3 MHEV?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 KIA RIO 3 MHEV
The 2021 KIA RIO 3 MHEV is a city car with a 998cc hybrid engine. 803 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2021, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 22,594 miles at 3 years old, KIA RIO 3 MHEV owners drive about as much as the UK average.
2021 KIA RIO 3 MHEV Fuel Costs
The modest 998cc hybrid 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 hybrid prices of 142p per litre (based on 7,400 miles per year). As a hybrid, real-world fuel costs will vary significantly depending on how much electric-only driving you do.
What does it cost to own a 2021 KIA RIO 3 MHEV?
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 RIO 3 MHEV Reliability Trend
Newer KIA RIO 3 MHEVs show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
Buying a Used 2021 KIA RIO 3 MHEV
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 2022 model has the highest pass rate at 97%.
Alternatives to the 2021 KIA RIO 3 MHEV
If reliability is your priority, there are 2 similar cars with a higher MOT pass rate. Here are comparable hybrid cars with similar engines:
- TOYOTA YARIS (2019) 93% pass rate (same) from 41,554 tests
- VOLVO XC40 (2021) 93% pass rate (same) from 25,698 tests
- HONDA JAZZ EX I-MMD CVT (2021) 96% pass rate (+3%) from 11,054 tests
- FORD PUMA TITANIUM MHEV (2021) 95% pass rate (+2%) from 7,555 tests