Tesla Model Y or Kia EV6: the batteries compared
What the advert doesn’t say: capacity by version, the manufacturer’s warranty, and what a failure would cost.
The essentials
- Biggest battery: Kia EV6, up to 84 kWh, against 75 kWh (Tesla Model Y).
- Longest warranty: Tesla Model Y, 8 years or 120,000 miles, against 8 years or 100,000 miles (Kia EV6).
- Cheapest new pack: Kia EV6, about €16,000, against €16,500 (Tesla Model Y).
- Cheapest to charge: Tesla Model Y, from £6.65 per 100 miles at home, against £6.99 (Kia EV6).
- Module-by-module repair: feasible on Kia EV6, not on Tesla Model Y.
Side by side
| Criterion | Tesla Model Y | Kia EV6 |
|---|---|---|
| On sale | since 2020 | since 2021 |
| Battery capacity | 57 · 72 · 75 kWh | 58 · 63 · 77.4 · 84 kWh |
| Chemistry | LFP, NMC | NMC |
| Battery warranty | 8 years or 120,000 miles guaranteed capacity: 70% | 2021 – 2023: 7 years or 100,000 miles guaranteed capacity: 70% since 2024: 8 years or 100,000 miles guaranteed capacity: 70% |
| Repairable module by module | No | Yes |
| Replacing one module | — | €900 – €2,500 |
| New pack, order of magnitude | ≈ €16,500 | ≈ €16,000 |
| WLTP consumption | 3.6 – 4.0 miles/kWh | 3.0 – 3.8 miles/kWh |
| Home charging, per 100 miles | £6.65 – £9.16 | £6.99 – £10.91 |
| Battery lease | Never | Never |
| Going further |
Capacity: every version sold under that name. Warranty: terms recorded for the UK, by year of first registration. Prices: orders of magnitude recorded in France, in euros, never quotes. Charging: from the most frugal version on the cheapest tariff to the thirstiest in real-world use.
Before you choose
A table compares models; you buy a car. Capacity depends on the version, the warranty on the date of first registration, and the state of health on the life the battery has had. The checker answers for one specific car: remaining warranty, expected state of health, cost of a failure.