T3 was Rover's third turbine car, designed by Spencer King and Gordon Bashford. The turbine is rear-mounted and the chassis incorporates four-wheel-drive and De Dion rear suspension.

The modified 2S/100 gas turbine rotates at up to a maximum of 52,000 rpm. All this new technology was clothed in a pretty glass-fibre coupé body.

Many ideas found a place in the Rover 2000 range of saloon cars. Among these were four-wheel disc brakes, all coil spring suspension and De Dion suspension at the rear.

The car was a perfectly useable road car, even though paraffin consumption was unacceptably high. With fuel economy of just 13-14 miles to the gallon at most, gas turbines have never been practicable as production cars.