Audi Q4 e-tron vs Mercedes-Benz EQA: home charging cost
At the July 2026 Ofgem price cap (26.11p/kWh), the Audi Q4 e-tron costs less to charge — it is the cheaper of the two to run at 7.2p per mile vs 7.4p for the Mercedes-Benz EQA — a difference of about £18.09 over 10,000 miles of home charging.
Prices based on the Ofgem price cap of 26.11 p/kWh, effective 1 July 2026.Source: Ofgem
| Audi Q4 e-tron40 (2021-2024) | Mercedes-Benz EQA250 | |
|---|---|---|
| Full charge cost | £22.73 | £19.73 |
| Cost per mile | 7.2p | 7.4p |
| 20-80% on a 7 kW wallbox | 6 hr 34 min | 5 hr 42 min |
| Usable battery | 76.6 kWh | 66.5 kWh |
| WLTP range | 316 miles | 265 miles |
| Efficiency | 4.1 mi/kWh | 4 mi/kWh |
| Max AC charging | 11 kW | 11 kW |
At a glance
Audi Q4 e-tron£22.73
Mercedes-Benz EQA£19.73
Audi Q4 e-tron7.2p
Mercedes-Benz EQA7.4p
Audi Q4 e-tron6 hr 34 min
Mercedes-Benz EQA5 hr 42 min
The bigger battery costs more to fill but is not necessarily more expensive to run — cost per mile depends on efficiency, not battery size. Costs include ~12% AC charging losses, and both figures rise in the cold — typically 10–30% in winter. On an off-peak tariff both cars cost roughly two thirds less per mile.