Mercedes-Benz EQE vs Porsche Cayenne

The Porsche Cayenne costs £13,835 more than the Mercedes-Benz EQE. For that premium it adds 220 kW faster peak rapid charging, 351 litres more boot space and 90 kW more power. The Mercedes-Benz EQE is not just cheaper - it also offers 65 miles more WLTP range and lower energy use, 164 versus 221 Wh/km. On EVcarsguide's combined category scores, the Porsche Cayenne comes out ahead overall.

The Mercedes-Benz EQE is £13,835 cheaper to buy. The Mercedes-Benz EQE is cheaper to charge, roughly £176 a year versus £240 for the Porsche Cayenne, at 8,000 miles on an off-peak home tariff. Add 5 years of charging and the Mercedes-Benz EQE comes out roughly £14,155 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 281 miles for the Mercedes-Benz EQE and 234 miles for the Porsche Cayenne - both below their WLTP figures, because sustained high speed is the hardest case for an EV. The Mercedes-Benz EQE goes roughly 47 miles further between charging stops.

The two are within 19 mm on width, so neither is meaningfully easier to thread into a tight space. In a standard 2,400 mm bay that leaves about 439 mm of total clearance for the Mercedes-Benz EQE and about 420 mm of total clearance for the Porsche Cayenne.

Over a 8-year ownership window EVcarsguide's degradation model projects roughly 84% battery health for the Mercedes-Benz EQE and 84% for the Porsche Cayenne. 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.