Strong demand for the the e-Niro, Ioniq and Kona Electric has kicked the South Korean brands into gear on a next-generation platform for electric vehicles.
Hyundai and Kia are working on a new electric car platform, set to underpin a range of small and medium-class cars when it launches in 2021.
A report from Auto Express reveals the "platform dedicated to electric vehicles is about two years away", according to company insiders.
The current Kona Electric, for example, is based on a version of the petrol-powered car's platform.
Hyundai and Kia are far from the only brands to be working on their own electric toolkit. Volkswagen has its MEB platform for electric vehicles, set to drive its aggressive push into the world of battery-powered cars.
BMW has also laid out its modular, electric approach to manufacturing in the future. The plug-and-play nature of electric motors will allow the Bavarian giant to choose its motor and battery pack, and then slot them into a car's chassis as required.