Nissan Ariya vs Kia EV6: home charging cost

At the July 2026 Ofgem price cap (26.11p/kWh), the Kia EV6 costs less to charge — it is the cheaper of the two to run at 6.7p per mile vs 7.4p for the Nissan Ariya — a difference of about £67.43 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

	Nissan Ariya63 kWh	Kia EV6RWD 77.4 kWh
Full charge cost	£18.69	£21.96
Cost per mile	7.4p	6.7p
20-80% on a 7 kW wallbox	5 hr 24 min	6 hr 21 min
Usable battery	63 kWh	74 kWh
WLTP range	250 miles	328 miles
Efficiency	4 mi/kWh	4.4 mi/kWh
Max AC charging	7.4 kW	11 kW

At a glance

Full charge cost (lower is better)

Nissan Ariya£18.69

Kia EV6£21.96

Running cost per mile (lower is better)

Nissan Ariya7.4p

Kia EV66.7p

20-80% time on a 7 kW wallbox (lower is better)

Nissan Ariya5 hr 24 min

Kia EV66 hr 21 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.