[6] The 4 is the third vehicle to use the rear- and all-wheel drive based platform, Sustainable Experience Architecture.

Polestar claims it is the fastest production car the brand has made, accelerating from 0–62 mph (0–100 km/h) in 3.8 seconds.

The 4 is a two-row coupe crossover, that has a choice of the rear-wheel drive model where the motor is placed at the rear axle, or the performance all-wheel drive model where the motors are placed at both the front and rear axles.

Standard equipment includes the 15.4-inch landscape touchscreen which consists of the Android Automotive, which is used on the Polestar 2.

A full-length glass roof, and a digital rear-vision mirror are available, and interior, which according to Polestar, is made from 100 per cent recycled polyester.