The best EV efficiency in miles per kWh for Saloon cars sold in the UK in 2026, was 5.0 miles per kWh for the Tesla Model 3, followed by the Hyundai Ioniq 6 and Mercedes EQS at 4.8 miles per kWh
You can compare EV efficiency in miles per kWh of all UK Saloon cars from the tables below. EV manufacturers rarely publish /kWh directly so the efficiency was calculated by dividing range in miles by battery size, hence ranges shown as min–max
| Make & Model | Body Type | Efficiency (mi/kWh) |
|---|---|---|
| Tesla Model 3 | Saloon | 4.4–5.0 |
| Hyundai Ioniq 6 | Saloon | 4.3–4.8 |
| BMW i4 | Gran coupe | 3.8–4.4 |
| Polestar 2 | Fastback | 3.5–4.2 |
| BYD Seal | Saloon | 4.0–4.5 |
| Mercedes EQE | Saloon | 3.5–4.2 |
| Mercedes EQS | Luxury saloon | 4.0–4.8 |
Results correct at time of publishing.
EV efficiency is measured in how many miles a car can travel from a kWh of electricity which typically costs around 25p.