KIA SPORTAGE GT-LINE CRDI ISG MHEV (2021)
Running costs, reliability data, and common problems from 2,263 real MOT tests.
Annual Cost
£1,587
£132/month
MOT Pass Rate
90%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 12-25
1598cc Hybrid
Great Choice
90% pass rate, £1587/year to run. 8 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 8 points above the national average of 82%. It also outperforms the KIA brand average of 86%.
At 5 years old, 90% of KIA SPORTAGE GT-LINE CRDI ISG MHEVs from 2021 passed their MOT first time in 2026. That's based on 2,263 tests across the UK. The average mileage at this age is 29,211 miles.
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How Does It Compare?
Mileage Analysis
29,211
Average miles
37,000
Expected for age
The average 2021 KIA SPORTAGE GT-LINE CRDI ISG MHEV has 29,211 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 2020 model with a 92% MOT pass rate, while the 2019 model has the lowest at 78%. The 2021 sits between the two at 90%.
KIA SPORTAGE GT-LINE CRDI ISG MHEV by Year
Similar Cars to Consider
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About the 2021 KIA SPORTAGE GT-LINE CRDI ISG MHEV
The 2021 KIA SPORTAGE GT-LINE CRDI ISG MHEV is a small family car with a 1598cc hybrid engine. 2,263 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 29,211 miles at 5 years old, KIA SPORTAGE GT-LINE CRDI ISG MHEV owners tend to use this car less than the typical driver.
2021 KIA SPORTAGE GT-LINE CRDI ISG MHEV Fuel Costs
The 1598cc 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 SPORTAGE GT-LINE CRDI ISG MHEV?
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 90% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
KIA SPORTAGE GT-LINE CRDI ISG MHEV Reliability Trend
Newer KIA SPORTAGE GT-LINE CRDI ISG MHEVs show better MOT pass rates than older ones, with an average improvement of 6 percentage points.
Buying a Used 2021 KIA SPORTAGE GT-LINE CRDI ISG MHEV
At 5 years old, the KIA SPORTAGE GT-LINE CRDI ISG MHEV 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 2020 model has the highest pass rate at 92%.
Common Issues to Watch For
Based on the 2021 KIA SPORTAGE GT-LINE CRDI ISG MHEV'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 SPORTAGE GT-LINE CRDI ISG MHEV stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| KIA SPORTAGE GT-LINE CRDI ISG MHEV(2021) | 90% | £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
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
TOYOTA YARIS
2019 · 1497cc Hybrid
MINI COOPER S
2019 · 1499cc Hybrid
LAND ROVER RANGE ROVER SPORT
2019 · 1997cc Hybrid
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