BYD ATTO 3 vs Kia EV4

The BYD ATTO 3 costs £4,245 more than the Kia EV4. For that premium it adds 47 miles more WLTP range, 93 kW faster peak rapid charging and 80 kW more power. On EVcarsguide's combined category scores, the Kia EV4 comes out ahead overall.

The Kia EV4 is £4,245 cheaper to buy. Running costs are almost identical - about £144 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Kia EV4 comes out roughly £4,325 cheaper overall. These figures cover list price and home charging only - insurance, servicing, tyres and depreciation will move the real total.

EVcarsguide estimates a real-world motorway range of about 263 miles for the BYD ATTO 3 and 226 miles for the Kia EV4 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BYD ATTO 3 goes roughly 38 miles further between charging stops. Both rapid-charge to 80% in a similar time, around 31-35 minutes.

The two are within 15 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 540 mm of total clearance for the Kia EV4 and about 525 mm of total clearance for the BYD ATTO 3. The BYD ATTO 3 also turns in a 0.5 m tighter circle, which helps with U-turns and multi-storey ramps.

Over a 8-year ownership window EVcarsguide's degradation model projects roughly 90% battery health for the BYD ATTO 3 and 89% for the Kia EV4. That is close enough that capacity loss should not decide between them. The BYD ATTO 3's LFP-type pack tolerates daily 100% charging, while the Kia EV4's NMC-type pack lasts longest kept to about 80% for everyday use. Both batteries carry a 8-year manufacturer warranty.