Alfa Romeo Junior Elettrica vs BYD ATTO 3

The BYD ATTO 3 costs £5,090 more than the Alfa Romeo Junior Elettrica. For that premium it adds 62 miles more WLTP range, 120 kW faster peak rapid charging and 115 kW more power. On EVcarsguide's combined category scores, the BYD ATTO 3 comes out ahead overall.

The Alfa Romeo Junior Elettrica is £5,090 cheaper to buy. Running costs are almost identical - about £160 a year either way, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Alfa Romeo Junior Elettrica comes out roughly £5,050 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 176 miles for the Alfa Romeo Junior Elettrica and 263 miles for the BYD ATTO 3 - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BYD ATTO 3 goes roughly 88 miles further between charging stops. A rapid charge to 80% takes around 27 minutes in the Alfa Romeo Junior Elettrica and 35 in the BYD ATTO 3, so the Alfa Romeo Junior Elettrica loses less time at each stop. So the BYD ATTO 3 stops less often while the Alfa Romeo Junior Elettrica stops for less time - pick on which you would rather do.

The Alfa Romeo Junior Elettrica is the easier car for tight UK car parks: it is 94 mm narrower than the BYD ATTO 3. In a standard 2,400 mm bay that leaves about 619 mm of total clearance for the Alfa Romeo Junior Elettrica and about 525 mm of total clearance for the BYD ATTO 3.

Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Alfa Romeo Junior Elettrica and 90% for the BYD ATTO 3. That gives the BYD ATTO 3 a modest edge in retained real-world range. The BYD ATTO 3's LFP-type pack tolerates daily 100% charging, while the Alfa Romeo Junior Elettrica's NMC-type pack lasts longest kept to about 80% for everyday use. Both batteries carry a 8-year manufacturer warranty.