BMW iX vs Porsche Taycan Cross Turismo

The Porsche Taycan Cross Turismo costs £20,795 more than the BMW iX. For that premium it adds 125 kW faster peak rapid charging and 40 kW more power. The BMW iX is not just cheaper - it also offers 79 miles more WLTP range, 54 litres more boot space and 1 more seat (5 versus 4). On EVcarsguide's combined category scores, the BMW iX comes out ahead overall.

The BMW iX is £20,795 cheaper to buy. The BMW iX is cheaper to charge, roughly £152 a year versus £208 for the Porsche Taycan Cross Turismo, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the BMW iX comes out roughly £21,075 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 355 miles for the BMW iX and 290 miles for the Porsche Taycan Cross Turismo - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BMW iX goes roughly 66 miles further between charging stops. A rapid charge to 80% takes around 35 minutes in the BMW iX and 18 in the Porsche Taycan Cross Turismo, so the Porsche Taycan Cross Turismo loses less time at each stop. So the BMW iX stops less often while the Porsche Taycan Cross Turismo stops for less time - pick on which you would rather do.

The two are within 4 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 434 mm of total clearance for the Porsche Taycan Cross Turismo and about 430 mm of total clearance for the BMW iX. The Porsche Taycan Cross Turismo also turns in a 1.1 m tighter circle, which helps with U-turns and multi-storey ramps.

Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the BMW iX and 84% for the Porsche Taycan Cross Turismo. That is close enough that capacity loss should not decide between them. Both use NMC-type cells, so for daily use keep the charge limit near 80% to slow degradation. Both batteries carry a 8-year manufacturer warranty.