Available only in saloon form, the E300e is powered by a 211bhp 2.0-litre petrol engine and a 122bhp electric motor, giving combined peaks of 320bhp and 516lb ft. This makes it capable of 0-62mph in 5.7sec.
It achieves 134.5mpg on the WLTP combined cycle, with an electric-only driving range of 31 miles from a 13.5kWh battery.
In entry-level SE trim, the E300e comes equipped with blindspot monitoring, illuminated door sills, parking assistance, 18in alloy wheels and heated front seats as standard.
The higher-spec AMG Line trim, which costs £49,945, adds exterior styling elements taken from AMG’s range of performance cars, an AMG steering wheel, tinted windows and twin-spoke alloy wheels. An extra £2395 buys the Premium Package with Mercedes’ Comand Online communication system, wireless phone charging and a 360deg camera.