KIA NIRO CONNECT PHEV S-A (2021)
Running costs, reliability data, and common problems from 73 real MOT tests.
Annual Cost
£1,587
£132/month
MOT Pass Rate
100%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 12-25
1580cc Hybrid
Great Choice
100% pass rate, £1587/year to run. 18 points above average.
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Annual Running Costs
~42 mpg
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 18 points above the national average of 82%. It also outperforms the KIA brand average of 86%.
At 5 years old, 100% of KIA NIRO CONNECT PHEV S-As from 2021 passed their MOT first time in 2026. That's based on 73 tests across the UK. The average mileage at this age is 19,265 miles.
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How Does It Compare?
Mileage Analysis
19,265
Average miles
37,000
Expected for age
The average 2021 KIA NIRO CONNECT PHEV S-A has 19,265 miles on the clock, which is below the expected 37,000 miles for a 5-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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About the 2021 KIA NIRO CONNECT PHEV S-A
The 2021 KIA NIRO CONNECT PHEV S-A is a small family car with a 1580cc hybrid engine. 73 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 0% of all 2021 cars for reliability.
With an average of 19,265 miles at 5 years old, KIA NIRO CONNECT PHEV S-A owners tend to use this car less than the typical driver.
2021 KIA NIRO CONNECT PHEV S-A Fuel Costs
The 1580cc hybrid engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,137 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 NIRO CONNECT PHEV S-A?
Total estimated annual running cost is £1,587 (£132/month), broken down as £1137 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 100% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 KIA NIRO CONNECT PHEV S-A
At 5 years old, the KIA NIRO CONNECT PHEV S-A offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. Note: with only 73 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2021 KIA NIRO CONNECT PHEV S-A's fuel type, age, and engine size, these are the most likely problem areas to check.
Hybrid Battery Health
Medium riskAfter 5 years, hybrid battery capacity may have reduced. A full replacement costs £2,000-£4,000, though reconditioning is cheaper at £500-£1,500.
Inverter and Power Electronics
Low riskThe inverter converts DC to AC for the electric motor. Failures are expensive (£1,500+) but relatively rare. Listen for unusual buzzing sounds.
Regenerative Braking
Medium riskBrake discs can corrode from reduced use (the electric motor handles most braking). Surface rust is normal but deep pitting needs attention.
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 CONNECT PHEV S-A stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| KIA NIRO CONNECT PHEV S-A(2021) | 100% | £1137 | £195 | Grp 12-25 | £1587 |
| TOYOTA YARIS(2019) | 93% | £1137 | £190 | Grp 12-25 | £1582-£5 |
| MINI COOPER S(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582-£5 |
| LAND ROVER RANGE ROVER SPORT(2019) | 94% | £1327 | £190 | Grp 18-32 | £1772+£185 |
| TOYOTA C-HR(2019) | 92% | £1327 | £190 | Grp 18-32 | £1772+£185 |
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
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KIA SPORTAGE
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KIA CEED
2012 · 1591cc Diesel
TOYOTA YARIS
2019 · 1497cc Hybrid
MINI COOPER S
2019 · 1499cc Hybrid
LAND ROVER RANGE ROVER SPORT
2019 · 1997cc Hybrid
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