Xiaomi unveiled a luxury version of its SU7 electric sports car on Tuesday, saying the $114,000 model would rank as the fastest four-door car in production, in a direct challenge to the likes of Tesla and Porsche.

Xiaomi, still better known for smartphones and home appliances than cars, entered China's crowded EV market in March with the launch of its hit SU7, a Porsche lookalike starting at less than $30,000.

Xiaomi CEO Lei Jun, who has a near-celebrity following in China, used the last section of a live-streamed product update that ran over three hours to show off the SU7 Ultra.