Kia EV6 GT-Line S (2023)
Estimated running costs and MOT pass rates from 37 MOT tests in 2024.
Annual Cost
£1,010
£84/month
MOT Pass Rate
100%
Excellent
Road Tax
£200
Standard rate/year
Est. Insurance
n/a
Electric
Great Choice
100% pass rate, £1,010/year to run. 18 points above average.
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Annual Running Costs
Home charging at about 7.5p a mile
Standard rate (from April 2017)
Low estimate due to excellent reliability
Estimates based on 7,400 miles/year (UK average), home charging at about 7.5p a mile, 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 18 points above the average of 82% across all models in our data. It also outperforms the Kia brand average of 86%.
100% of MOT tests on Kia EV6 GT-Line Ss from 2023 ended in a pass in 2024, when they were about a year old. That's based on 37 tests across the UK, retests included. The average mileage recorded at those tests was 27,958 miles.
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How Does It Compare?
Mileage Analysis
27,958
Average miles
7,400
Expected for age
The average 2023 Kia EV6 GT-Line S had 27,958 miles on the clock at its 2024 MOT, which is well above the expected 7,400 miles for a 1-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
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Kia EV6 GT-Line S by Year
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About the 2023 Kia EV6 GT-Line S
The 2023 Kia EV6 GT-Line S is an electric car. Our records list it as electric. 37 MOT tests were recorded on this model in 2024, making it a rare model on UK roads. It ranks in the top 11% of all 2023 models for MOT pass rate.
With an average of 27,958 miles recorded at its 2024 MOT tests, Kia EV6 GT-Line S owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
What does it cost to own a 2023 Kia EV6 GT-Line S?
Total estimated annual running cost is £1,010 (£84/month), broken down as £555 electricity, £200 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 2023 Kia EV6 GT-Line S
At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet. Note: with only 37 tests in our data, these figures should be treated as indicative rather than definitive.
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.
Battery Degradation
Medium riskAfter 3 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
Low 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
Low 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 2023 Kia EV6 GT-Line S 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 EV6 GT-Line S(2023) | 100% | £555 | £200 | n/a | £1,010 |
| Tesla Model 3 Long Range Awd(2021) | 88% | £555 | £200 | n/a | £1,160+£150 |
| Tesla Model 3 Standard Range +(2021) | 88% | £555 | £200 | n/a | £1,160+£150 |
| Nissan Leaf(2021) | 94% | £555 | £200 | n/a | £1,010same |
| Kia Niro 4 + EV(2021) | 93% | £555 | £200 | n/a | £1,010same |
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 2023 Kia EV6 GT-Line S
Is the 2023 Kia EV6 GT-Line S reliable?
Excellent reliability. Very few MOT failures. 100% of MOT tests on 2023 Kia EV6 GT-Line Ss ended in a pass, from 37 tests (DVSA MOT data for tests in 2024, retests included). That's 18 points above the average of 82% across all models in the same data.
How much does a 2023 Kia EV6 GT-Line S cost to run?
Our estimate is £1,010 a year (£84 a month): £555 electricity, £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 2023 Kia EV6 GT-Line S?
100% of 37 MOT tests on the 2023 Kia EV6 GT-Line S ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 18th of 165 models first registered in 2023 (top 11%).
What is the average mileage for a 2023 Kia EV6 GT-Line S?
The average mileage recorded at MOT tests on the 2023 Kia EV6 GT-Line S is 27,958 miles, which is well above the expected 7,400 miles for a 1-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
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