Kia EV3 vs Kia Niro EV: home charging cost

At the July 2026 Ofgem price cap (26.11p/kWh), the Kia EV3 costs less to charge — it is the cheaper of the two to run at 6.2p per mile vs 6.7p for the Kia Niro EV — a difference of about £56.19 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

	Kia EV3Long Range 81.4 kWh	Kia Niro EV64.8 kWh
Full charge cost	£23.14	£19.23
Cost per mile	6.2p	6.7p
20-80% on a 7 kW wallbox	6 hr 41 min	5 hr 33 min
Usable battery	78 kWh	64.8 kWh
WLTP range	375 miles	285 miles
Efficiency	4.8 mi/kWh	4.4 mi/kWh
Max AC charging	11 kW	11 kW

At a glance

Full charge cost (lower is better)

Kia EV3£23.14

Kia Niro EV£19.23

Running cost per mile (lower is better)

Kia EV36.2p

Kia Niro EV6.7p

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

Kia EV36 hr 41 min

Kia Niro EV5 hr 33 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.