Kia Ceed GT-Line Isg (2021)
Estimated running costs and MOT pass rates from 1,368 MOT tests in 2024.
Annual Cost
£1,853
£154/month
MOT Pass Rate
91%
Excellent
Road Tax
£200
Standard rate/year
Est. Insurance
Grp 12-25
1482cc Petrol
Great Choice
91% pass rate, £1,853/year to run. 9 points above average.
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Annual Running Costs
~42 mpg
Standard rate (from April 2017)
Low estimate due to excellent reliability
Estimates based on 7,400 miles/year (UK average), petrol at 174.57p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).
Reliability Verdict
Excellent reliability. Very few MOT failures. That's 9 points above the average of 82% across all models in our data. It also outperforms the Kia brand average of 86%.
91% of MOT tests on Kia Ceed GT-Line Isgs from 2021 ended in a pass in 2024, when they were about 3 years old. That's based on 1,368 tests across the UK, retests included. The average mileage recorded at those tests was 24,498 miles.
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How Does It Compare?
Mileage Analysis
24,498
Average miles
22,200
Expected for age
The average 2021 Kia Ceed GT-Line Isg had 24,498 miles on the clock at its 2024 MOT, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
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Kia Ceed GT-Line Isg by Year
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About the 2021 Kia Ceed GT-Line Isg
The 2021 Kia Ceed GT-Line Isg is a small family car. Our records list a 1482cc petrol engine, though engines vary between versions. 1,368 MOT tests were recorded on this model in 2024, making it a reasonably common sight on UK roads. Among all models from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 24,498 miles recorded at its 2024 MOT tests, Kia Ceed GT-Line Isg owners drive about as much as the UK average.
2021 Kia Ceed GT-Line Isg Fuel Costs
The 1482cc petrol engine offers a reasonable balance between performance and economy. Expect around 42 mpg in mixed driving, which works out to roughly £1,398 per year with petrol at 174.57p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year).
What does it cost to own a 2021 Kia Ceed GT-Line Isg?
Total estimated annual running cost is £1,853 (£154/month), broken down as £1,398 fuel, £200 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Kia Ceed GT-Line Isg Reliability Trend
The Kia Ceed GT-Line Isg has maintained consistent MOT pass rates across model years, varying by only 1 percentage point.
Buying a Used 2021 Kia Ceed GT-Line Isg
At 5 years old, the Kia Ceed GT-Line Isg offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Common Issues to Watch For
These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.
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 Ceed GT-Line Isg stacks up against similar cars for estimated annual running costs, insurance group, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Est. Ins. Group | Total/yr |
|---|---|---|---|---|---|
| Kia Ceed GT-Line Isg(2021) | 91% | £1,398 | £200 | Grp 12-25 | £1,853 |
| Ford Fiesta(2019) | 91% | £1,175 | £200 | Grp 1-8 | £1,630-£223 |
| Volkswagen Golf(2019) | 92% | £1,398 | £200 | Grp 12-25 | £1,853same |
| Vauxhall Corsa(2019) | 88% | £1,398 | £200 | Grp 8-20 | £2,003+£150 |
| Nissan Qashqai(2020) | 93% | £1,398 | £200 | Grp 12-25 | £1,853same |
Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.
Questions about the 2021 Kia Ceed GT-Line Isg
Is the 2021 Kia Ceed GT-Line Isg reliable?
Excellent reliability. Very few MOT failures. 91% of MOT tests on 2021 Kia Ceed GT-Line Isgs ended in a pass, from 1,368 tests (DVSA MOT data for tests in 2024, retests included). That's 9 points above the average of 82% across all models in the same data.
How much does a 2021 Kia Ceed GT-Line Isg cost to run?
Our estimate is £1,853 a year (£154 a month): £1,398 fuel, £200 road tax, £55 MOT and £200 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2021 Kia Ceed GT-Line Isg?
91% of 1,368 MOT tests on the 2021 Kia Ceed GT-Line Isg ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 2151st of 3,336 models first registered in 2021 (bottom half).
Which year Kia Ceed GT-Line Isg has the best MOT pass rate?
Of the years with at least 100 tests, the 2021 Kia Ceed GT-Line Isg has the highest MOT pass rate at 91% and the 2020 the lowest at 88%. Newer cars usually pass more often simply because they are younger and have done fewer miles.
What is the average mileage for a 2021 Kia Ceed GT-Line Isg?
The average mileage recorded at MOT tests on the 2021 Kia Ceed GT-Line Isg is 24,498 miles, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
Related Kia Models
Explore other Kia cars or similar models in the same category.
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Kia Ceed
2012 · 1591cc Diesel
Ford Fiesta
2019 · 998cc Petrol
Volkswagen Golf
2019 · 1498cc Petrol
Vauxhall Corsa
2019 · 1398cc Petrol
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