Steve from Australia built himself a Honda VTEC-powered classic Mini a few years back and was proud of the job he’d done. However, it was a bit of a torque-steering monster and wasn’t great to drive.

EV conversion specialist Electrogenic developed a drop-in kit for the classic Mini models, offering a 60-hp motor and a 20-kWh battery. The kit, designed to fit into the engine bay and be installed by ...