KIA NIRO 3 EV (2021)
Running costs, reliability data, and common problems from 6,988 real MOT tests.
Annual Cost
£950
£79/month
MOT Pass Rate
92%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 1-8
0cc Electric
Great Choice
92% pass rate, £950/year to run. 10 points above average.
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Annual Running Costs
Flat rate (post-2017)
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Excellent reliability. Very few MOT failures. That's 10 points above the national average of 82%. It also outperforms the KIA brand average of 86%.
At 5 years old, 92% of KIA NIRO 3 EVs from 2021 passed their MOT first time in 2026. That's based on 6,988 tests across the UK. The average mileage at this age is 54,567 miles.
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How Does It Compare?
Mileage Analysis
54,567
Average miles
37,000
Expected for age
The average 2021 KIA NIRO 3 EV has 54,567 miles on the clock, which is above the expected 37,000 miles for a 5-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
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Best Year to Buy?
The most reliable year is the 2023 model with a 98% MOT pass rate, while the 2021 model has the lowest at 92%. Consider a different year if reliability is a priority.
KIA NIRO 3 EV by Year
Similar Cars to Consider
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About the 2021 KIA NIRO 3 EV
The 2021 KIA NIRO 3 EV is a electric with a 0cc electric engine. 6,988 of these vehicles were MOT tested in 2026, making it a reasonably common sight on UK roads. Among all cars from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 54,567 miles at 5 years old, KIA NIRO 3 EV owners cover more miles than the average driver.
What does it cost to own a 2021 KIA NIRO 3 EV?
Total estimated annual running cost is £950 (£79/month), broken down as £500 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 92% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
KIA NIRO 3 EV Reliability Trend
Newer KIA NIRO 3 EVs show better MOT pass rates than older ones, with an average improvement of 4 percentage points.
Buying a Used 2021 KIA NIRO 3 EV
At 5 years old, the KIA NIRO 3 EV offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. With 6,988 MOT tests in our data, there's strong statistical confidence in these figures.
Common Issues to Watch For
Based on the 2021 KIA NIRO 3 EV's fuel type, age, and engine size, these are the most likely problem areas to check.
Battery Degradation
Medium riskAfter 5 years, expect some battery capacity loss. Check the battery health report for state of health (SoH). Below 80% significantly reduces range.
Charging Port
Medium riskCharging connectors and ports can develop issues from regular use. Check both AC and DC charging work correctly before purchasing.
Software Updates
Medium riskOlder EVs may miss out on manufacturer software updates that improve range and features. Check the infotainment system is up to date.
12V Auxiliary Battery
Medium riskEVs still have a standard 12V battery for accessories. These drain faster than in petrol cars and can leave you stranded if flat. Replacement is £100-£200.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2021 KIA NIRO 3 EV stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| KIA NIRO 3 EV(2021) | 92% | £500 | £195 | Grp 1-8 | £950 |
| TESLA MODEL 3 LONG RANGE AWD(2021) | 88% | £500 | £190 | Grp 1-8 | £1095+£145 |
| JAGUAR I-PACE(2020) | 96% | £500 | £190 | Grp 1-8 | £945-£5 |
| TESLA MODEL 3 STANDARD RANGE +(2021) | 88% | £500 | £190 | Grp 1-8 | £1095+£145 |
| TESLA MODEL 3 PERFORMANCE AWD(2020) | 87% | £500 | £190 | Grp 1-8 | £1095+£145 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
Related Kia Models
Explore other Kia cars or similar models in the same category.
KIA SPORTAGE
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KIA PICANTO
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KIA CEED
2012 · 1591cc Diesel
TESLA MODEL 3 LONG RANGE AWD
2021 · 0cc Electric
JAGUAR I-PACE
2020 · 0cc Electric
TESLA MODEL 3 STANDARD RANGE +
2021 · 0cc Electric
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