Petrol-electric plug-in hybrid sedan joins diesel-electric sedan and wagon in Britain from £47,450.
Mercedes-Benz UK has detailed the plug-in hybrid E300e, which commences deliveries in Great Britain from 'spring 2019'.
Unlike the E300de, which teams a turbo-diesel engine with plug-in hybrid tech, the E300e uses a more conventional petrol-electric setup.
Power comes from a 2.0-litre turbo petrol engine making 211hp (157kW) and 350Nm, while the electric motor makes 122hp (91kW) and 440Nm. Mercedes-Benz claims a beefy system torque output of 700Nm, not bad at all.
The German marque reckons the PHEV sedan will dash from 0-100 in 5.7 seconds, hit a top speed of 250km/h, drive up to 31 miles (50km) on electric power only thanks to its 13.5kWh battery, and achieve a fuel economy figure of 134.5mpg (2.1L/100km).
Additionally, the battery pack can be charged from 10 to 100 per cent in "under two hours" using a 7.4kW charger, or in "under four hours" through a standard three-pin UK socket.
Standard equipment for the base 'SE' grade includes blind-spot assist, a dual-screen digital cockpit and infotainment setup, four USB inputs, illuminated door sills, front and rear parking sensors, active parking assist, electro-pneumatic four-way lumbar support, configurable ambient lighting with 64 colours, 18-inch alloy wheels, keyless start, and electric front seats with heating.
Opting for the AMG Line (£49,945, $87,266) adds sportier AMG body styling, different 18-inch alloys, black open-pore ash wood trim, leatherette/suede upholstery, and AMG sports steering wheel, and privacy glass.
Various cost option packages are available too, including the Comfort Package (£1895 for SE, £3295 for AMG Line) which brings Air Balance interior fragrancing, air suspension, energising comfort control, and nappa leather upholstery (AMG Line only).
The E300e is only available in sedan guise only, with the only hybrid estate option being the E300de diesel-electric PHEV.
Speaking with CarAdvice, Jerry Stamoulis, Benz's local communications boss, said the E300e is "under consideration for our market".
Previously, the local arm said it would focus on petrol-electric powertrain technology – ruling out the diesel-electric E-Class for our market.
"Mercedes-Benz Australia will continue to offer a broad range of electrification which will include plug-in hybrid models, Stamoulis said following the E300de's launch overseas.
"Under the EQ banner, plug in hybrids will be an important part of our local range as we plan to launch a number of new variants during 2019, along with the launch of the full-electric EQC."