KIA SPORTAGE 3 ISG (2021)
Running costs, reliability data, and common problems from 668 real MOT tests.
Annual Cost
£1,587
£132/month
MOT Pass Rate
93%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 12-25
1591cc Petrol
Great Choice
93% pass rate, £1587/year to run. 11 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 11 points above the national average of 82%. It also outperforms the KIA brand average of 86%.
At 5 years old, 93% of KIA SPORTAGE 3 ISGs from 2021 passed their MOT first time in 2026. That's based on 668 tests across the UK. The average mileage at this age is 24,929 miles.
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How Does It Compare?
Mileage Analysis
24,929
Average miles
37,000
Expected for age
The average 2021 KIA SPORTAGE 3 ISG has 24,929 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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Best Year to Buy?
The most reliable year is the 2022 model with a 95% MOT pass rate, while the 2020 model has the lowest at 89%. The 2021 sits between the two at 93%.
KIA SPORTAGE 3 ISG by Year
Similar Cars to Consider
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About the 2021 KIA SPORTAGE 3 ISG
The 2021 KIA SPORTAGE 3 ISG is a small family car with a 1591cc petrol engine. 668 of these vehicles were MOT tested in 2026, 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 24,929 miles at 5 years old, KIA SPORTAGE 3 ISG owners tend to use this car less than the typical driver.
2021 KIA SPORTAGE 3 ISG Fuel Costs
The 1591cc petrol 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 petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 KIA SPORTAGE 3 ISG?
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 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
KIA SPORTAGE 3 ISG Reliability Trend
Newer KIA SPORTAGE 3 ISGs show better MOT pass rates than older ones, with an average improvement of 5 percentage points.
Buying a Used 2021 KIA SPORTAGE 3 ISG
At 5 years old, the KIA SPORTAGE 3 ISG offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2022 model has the highest pass rate at 95%.
Common Issues to Watch For
Based on the 2021 KIA SPORTAGE 3 ISG's fuel type, age, and engine size, these are the most likely problem areas to check.
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 SPORTAGE 3 ISG stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| KIA SPORTAGE 3 ISG(2021) | 93% | £1137 | £195 | Grp 12-25 | £1587 |
| VOLKSWAGEN GOLF(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582-£5 |
| VAUXHALL CORSA(2019) | 88% | £1137 | £190 | Grp 8-20 | £1732+£145 |
| NISSAN QASHQAI(2020) | 93% | £1137 | £190 | Grp 12-25 | £1582-£5 |
| MINI COOPER(2019) | 92% | £1137 | £190 | Grp 12-25 | £1582-£5 |
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
2016 · 1700cc Diesel
KIA PICANTO
2018 · 998cc Petrol
KIA CEED
2012 · 1591cc Diesel
VOLKSWAGEN GOLF
2019 · 1498cc Petrol
VAUXHALL CORSA
2019 · 1398cc Petrol
NISSAN QASHQAI
2020 · 1598cc Petrol
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