KIA EV6 GT-LINE (2023)
Running costs, reliability data, and common problems from 56 real MOT tests.
Annual Cost
£1,250
£104/month
MOT Pass Rate
79%
Average
Road Tax
£195
Flat rate/year
Insurance
Grp 1-8
0cc Electric
Check Carefully
79% pass rate, £1250/year to run. Close to the national average.
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Annual Running Costs
Flat rate (post-2017)
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
Average reliability. Expect some repairs as it ages. That's close to the national average of 82%. It falls below the KIA brand average of 86%.
At 3 years old, 79% of KIA EV6 GT-LINEs from 2023 passed their MOT first time in 2026. That's based on 56 tests across the UK. The average mileage at this age is 21,439 miles.
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How Does It Compare?
Mileage Analysis
21,439
Average miles
22,200
Expected for age
The average 2023 KIA EV6 GT-LINE has 21,439 miles on the clock, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
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Best Year to Buy?
The most reliable year is the 2022 model with a 98% MOT pass rate, while the 2023 model has the lowest at 79%. Consider a different year if reliability is a priority.
KIA EV6 GT-LINE by Year
Similar Cars to Consider
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About the 2023 KIA EV6 GT-LINE
The 2023 KIA EV6 GT-LINE is a electric with a 0cc electric engine. 56 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. It sits in the bottom 98% of 2023 cars for MOT pass rates.
With an average of 21,439 miles at 3 years old, KIA EV6 GT-LINE owners drive about as much as the UK average.
What does it cost to own a 2023 KIA EV6 GT-LINE?
Total estimated annual running cost is £1,250 (£104/month), broken down as £500 fuel, £195 road tax, £55 MOT, and £500 predicted repairs. Repair costs are moderate, reflecting the 79% pass rate. Keeping on top of servicing will help avoid surprises.
KIA EV6 GT-LINE Reliability Trend
Older KIA EV6 GT-LINEs tend to have better MOT pass rates than newer ones, with an average decline of 8 percentage points across model years.
Buying a Used 2023 KIA EV6 GT-LINE
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 56 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 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 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(2023) | 79% | £500 | £195 | Grp 1-8 | £1250 |
| TESLA MODEL 3 LONG RANGE AWD(2021) | 88% | £500 | £190 | Grp 1-8 | £1095-£155 |
| TESLA MODEL 3 STANDARD RANGE +(2021) | 88% | £500 | £190 | Grp 1-8 | £1095-£155 |
| KIA NIRO 4 + EV(2021) | 93% | £500 | £190 | Grp 1-8 | £945-£305 |
| HYUNDAI KONA(2021) | 93% | £500 | £190 | Grp 1-8 | £945-£305 |
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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