BMW i7 vs Porsche Taycan

The BMW i7 costs £16,030 more than the Porsche Taycan. For that premium it adds 85 miles more WLTP range, 93 litres more boot space and 1 more seat (5 versus 4). On EVcarsguide's combined category scores, the Porsche Taycan comes out ahead overall.

EVcarsguide estimates a real-world motorway range of about 362 miles for the BMW i7 and 306 miles for the Porsche Taycan - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The BMW i7 goes roughly 56 miles further between charging stops. A rapid charge to 80% takes around 34 minutes in the BMW i7 and 18 in the Porsche Taycan, so the Porsche Taycan loses less time at each stop. So the BMW i7 stops less often while the Porsche Taycan stops for less time - pick on which you would rather do.

The two are within 16 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 450 mm of total clearance for the BMW i7 and about 434 mm of total clearance for the Porsche Taycan. The Porsche Taycan also turns in a 1.4 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 i7 and 84% for the Porsche Taycan. 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.