Between now and 2022, the car maker will launch the EQC SUV, the EQA hatchback (already seen in concept form), the EQB small SUV and an EQS flagship saloon.
Three Smart electric vehicles – Fortwo, Fortwo Cabriolet and Forfour – will bring the count to seven.
An electric V-Class, a passenger version of the Vito van, already confirmed to go electric, will also arrive by 2022.
The final two cars are not yet certain. Most likely is an EQA-based saloon, vital for the burgeoning electric market in China.
Mercedes R&D boss Ola Kallenius said: “The EQ family will have several saloons in its portfolio, but the EQC was the right place to start strategically. It’s right at the heart of premium SUV volume.” Electric configurations are also easier to package into high-riding vehicles such as SUVs, because of the battery placement along the floor.