Three specification levels will be available, with prices for the entry-level SE Long Range model starting from £30,995, or £28,495 after the government's £2500 plug-in car grant is applied.
The Kia e-Niro rival will gain a 72kWh battery with a range of up to 273 miles, a big improvement on the 163 miles offered by the outgoing model.
Entry-level SE cars are equipped with a 10.1in touchscreen, sat-nav and USB charging ports, along with automatic air conditioning, LED headlights, keyless entry and adaptive cruise control. All cars receive assist systems including active emergency braking, lane assist, and pedestrian and cyclist detection.
The next level up, Trophy specification, starts from £30,995 after the grant and adds a panoramic roof and roof rails, heated, electric leather seats, automatic wipers and wireless phone charging.
Range-topping Trophy Connect cars gain MG’s iSmart live service system with weather, traffic and Amazon Prime connectivity, and start from £31,495 after the grant.
All models will be offered with a choice of five exterior paint colours: Arctic White, Black Pearl, Monument Silver, Dynamic Red and the newly introduced Battersea Blue.
The updated ZS EV was revealed earlier this year alongside the debut of the firm’s new Marvel-R flagship and the 5 SW EV.
The lightly restyled and upgraded duo have received a series of tweaks to their powertrains and interiors with a view to strengthening the Chinese brand's position in Europe, where it is established in 15 markets and is ramping up its presence in three more.