Claimed efficiency: 4.7mpkWh

Autocar’s test efficiency: 4.1mpkWh

The Peugeot e-308 is due in October 2023 and Peugeot has made some impressive claims about its potential range and efficiency figures, labelling it “a benchmark among 100% electric vehicles in the C-segment”. 

Peugeot says that with the e-308’s EV-specific redesign, low-friction tyres and aerodynamic wheel options applied, the new e-308 will be capable of producing 4.8mpkWh in hatchback guise. 

Of course, real-world tests will prove whether it can achieve that ambitious figure, and if it can, it will be the most efficient electric car on sale. 

The new e-308 is powered by a 51kWh (usable) battery with 252 miles of range. The French car maker has priced the hatch from £40,050 here in the UK, and the estate will follow later in 2023.