KIA EV6 GT-LINE S (2023)
Running costs, reliability data, and common problems from 37 real MOT tests.
Annual Cost
£950
£79/month
MOT Pass Rate
100%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 1-8
0cc Electric
Great Choice
100% pass rate, £950/year to run. 18 points above average.
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Annual Running Costs
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 3 years old, 100% of KIA EV6 GT-LINE Ss from 2023 passed their MOT first time in 2026. That's based on 37 tests across the UK. The average mileage at this age is 27,958 miles.
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How Does It Compare?
Mileage Analysis
27,958
Average miles
22,200
Expected for age
The average 2023 KIA EV6 GT-LINE S has 27,958 miles on the clock, which is above the expected 22,200 miles for a 3-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
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Best Year to Buy?
The most reliable year is the 2022 model with a 97% MOT pass rate, while the 2021 model has the lowest at 95%. The 2023 sits between the two at 100%.
KIA EV6 GT-LINE S by Year
Similar Cars to Consider
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About the 2023 KIA EV6 GT-LINE S
The 2023 KIA EV6 GT-LINE S is a electric with a 0cc electric engine. 37 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It ranks in the top 11% of all 2023 cars for reliability.
With an average of 27,958 miles at 3 years old, KIA EV6 GT-LINE S owners cover more miles than the average driver.
What does it cost to own a 2023 KIA EV6 GT-LINE S?
Total estimated annual running cost is £950 (£79/month), broken down as £500 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 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. If you're flexible on year, the 2022 model has the highest pass rate at 97%. Note: with only 37 tests in our data, these figures should be treated as indicative rather than definitive.
Common Issues to Watch For
Based on the 2023 KIA EV6 GT-LINE S's fuel type, age, and engine size, these are the most likely problem areas to check.
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 annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| KIA EV6 GT-LINE S(2023) | 100% | £500 | £195 | Grp 1-8 | £950 |
| TESLA MODEL 3 LONG RANGE AWD(2021) | 88% | £500 | £190 | Grp 1-8 | £1095+£145 |
| TESLA MODEL 3 STANDARD RANGE +(2021) | 88% | £500 | £190 | Grp 1-8 | £1095+£145 |
| KIA NIRO 4 + EV(2021) | 93% | £500 | £190 | Grp 1-8 | £945-£5 |
| HYUNDAI KONA(2021) | 93% | £500 | £190 | Grp 1-8 | £945-£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.
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