Kia EV6 Battery Health, Range & Degradation

Thinking about a used Kia EV6? It is one of the best all-round electric cars you can buy second hand, with 800V charging, a genuine long-distance range and sharp styling. But the EV6 has also been at the centre of the E-GMP charging-unit recall, and the single biggest variable in any used EV is the health of the battery pack. This page pulls together what independent sources say about EV6 range, degradation and recalls, and how to confirm the condition of the specific car in front of you.

Real-world range by version

The EV6 launched with a 58 kWh Standard Range pack and a 77.4 kWh Long Range pack. The 2025 facelift moved the Long Range up to an 84 kWh battery. All quoted range figures below are WLTP unless stated, and real-world numbers come from independent testing rather than the manufacturer.

Version	Usable battery	WLTP range	Independent real-world
Standard Range RWD (2022 to 2024)	around 54 kWh	around 245 miles (WLTP)	proportionally lower than Long Range
Long Range RWD (2022 to 2024)	74 kWh	313 to 328 miles (WLTP)	around 250 miles combined (EV Database)
Long Range AWD (2022 to 2024)	74 kWh	around 314 miles (WLTP)	around 230 to 240 miles
Long Range RWD (2025 on, 84 kWh)	around 80 kWh	higher again (WLTP)	not yet widely road-tested
EV6 GT	74 kWh	around 263 miles (WLTP)	lower under hard use

EV Database puts the 77.4 kWh Long Range RWD at roughly 250 miles combined in the real world, dropping to about 180 miles on a cold motorway run and rising toward 370 miles for gentle city driving in mild weather. One extended road test by Notebookcheck averaged around 204 miles over nearly 1,200 miles of mixed driving. The gap between the WLTP sticker and everyday figures is normal for every EV, and we explain why in our guide on why an EV gets less range than advertised.

Battery design and cooling

The EV6 sits on Kia's E-GMP platform with an 800V electrical architecture, which is what allows its headline rapid-charging speeds. The pack uses nickel-manganese-cobalt (NCM) pouch cells supplied by SK On, arranged in a liquid-cooled module structure. Liquid cooling matters: it keeps cell temperatures even during fast charging and hot weather, which is one of the main factors in how slowly a pack ages.

The 800V design also means the EV6 spends less time at high current during a rapid charge than many 400V rivals, because it can accept power at higher voltage. In practical terms that tends to keep heat down during charging, which is good news for long-term battery health, provided the car has been looked after.

How the battery ages

No two used EV6s are identical, so treat any single percentage with caution until you test the actual car. As a benchmark, Geotab's large EV study reports an average battery degradation rate of around 2.3 percent per year across more than 22,700 vehicles and 21 makes and models. That figure is a fleet average across all brands, not an EV6-specific number, and Geotab notes that chemistry and thermal management are among the reasons some models age faster than others.

Applied to the EV6, a well-treated three or four year old car should still test comfortably in the high 80s or low 90s for State of Health, with liquid cooling and the conservative pack buffer working in its favour. What moves the needle is history: heavy reliance on rapid charging, frequent charging to 100 percent, and long periods parked at very high or very low charge. Geotab has also flagged that rising rapid-charging use is linked to slightly faster degradation across EVs generally. If you want to understand what a healthy figure looks like, see our explainer on a good battery health percentage for a used EV, and the warning signs in signs of a failing EV battery.

Known issues and recalls

The most important issue on the EV6 is the Integrated Charging Control Unit, or ICCU. The ICCU manages high-voltage charging and keeps the 12V battery topped up. On affected cars it can become damaged over time and stop charging the 12V battery, which can lead to a gradual loss of drive power.

This is a real recall, not internet rumour. In the UK it is run by DVSA under campaign number 241041 and covers model-year 2024 EV6 cars, with the remedy being an ICCU software update, or replacement of the ICCU and fuse where a specific fault code is present. In the US the current recall is NHTSA campaign 24V867 (Kia SC327), covering around 62,872 EV6 vehicles from the 2022 to 2024 model years, which replaced the earlier 24V200. The EV6 shares this ICCU concern with the closely related Hyundai Ioniq 5, so the same checks apply to both.

Separately, there was a small US-only battery fire recall (NHTSA campaign 26V431) covering only a handful of 2022 to 2024 EV6 units, where specific cells from supplier SK On could contain misaligned electrodes. That action affected a very small number of cars and, on current information, was a US measure rather than a UK or Europe-wide recall. Do not read a US-only action as a UK recall.

The practical takeaway is simple. Recalls are handled per vehicle, so what matters is whether this specific car has had the work done. Check any car by registration on the free GOV.UK vehicle recall checker, ask the seller for proof the ICCU campaign was completed, and use an independent battery test to confirm the pack itself is healthy. That is exactly the case for using an independent test rather than a dealer's word, and you can see what the output looks like on our sample certificate.

Battery warranty

Kia's UK cover is among the more generous in the market. The whole-car warranty runs to 7 years or 100,000 miles. The high-voltage battery is warranted separately: for cars first registered from 1 January 2024 the battery is covered for 8 years or 100,000 miles, and for earlier cars 7 years or 100,000 miles, in each case against capacity dropping below 70 percent of original. Crucially the battery warranty is transferable to subsequent owners, so a used EV6 can still carry meaningful factory cover.

Two points for buyers. First, the 70 percent threshold is a floor, not a target: a car can sit above 70 percent and still have lost enough range to matter for your daily drive. Second, warranty cover does not tell you the car's current State of Health. A test does. For a fuller walkthrough of checking a used car, read how to check a used EV battery's health, and compare the EV6 with its platform sibling the Hyundai Ioniq 5 or Kia's earlier e-Niro.

Frequently asked questions

What is a good battery health percentage for a used Kia EV6? Most well-kept EV6s from 2022 onwards test in the low-to-mid 90s for State of Health. Because Geotab's fleet-average degradation across all EVs is around 2.3% per year, a three or four year old EV6 that reports high-80s or better is normal. Anything materially lower deserves questions. Only a proper diagnostic test on that specific car gives you a reliable figure.

How much real-world range does a used Kia EV6 have in UK driving? EV Database estimates a combined real-world figure of around 250 miles for the 77.4 kWh Long Range RWD, against a WLTP rating of roughly 313 to 328 miles. Expect closer to 180 miles on a cold motorway run and up to around 370 miles gentle city driving in mild weather. The 58 kWh Standard Range covers proportionally less.

Does the Kia EV6 have a battery or ICCU recall I should know about? Yes. The main action is the ICCU recall covering 2022 to 2024 cars, run in the UK by DVSA under campaign 241041 and in the US under NHTSA 24V867, which replaced 24V200. A separate US-only battery fire recall (NHTSA 26V431) affected only a handful of EV6 units with a specific cell defect. Always confirm outstanding recalls by registration on the GOV.UK checker and confirm the ICCU work was completed.

How long is the Kia EV6 battery warranty in the UK? Kia UK covers the high-voltage battery for 8 years or 100,000 miles on cars registered from 1 January 2024, and 7 years or 100,000 miles on earlier cars, in both cases against capacity falling below 70 percent. The cover is transferable to later owners, which supports resale value.

Does the EV6's 800V fast charging harm the battery over time? The EV6 uses an 800V E-GMP platform with a liquid-cooled pack, which keeps charging temperatures controlled. Geotab notes that heavier rapid-charging use is linked to slightly faster degradation across EVs generally, but the EV6's thermal management is designed to limit this. A history of almost exclusive rapid charging is still worth checking with a test.

Can I check the battery health of a specific used EV6 before I buy? Yes. An independent TÜV Certified battery test reads the pack at cell level through the car's own systems and issues a certificate showing true State of Health. For a private buyer this costs £100 and tells you whether this exact car is healthy and whether any ICCU or battery work has been done.