A Fire and Emergency NZ spokesperson said the suspicious vehicle fire on Seaward View, Brooklands, was "well-involved" by the time emergency services arrived at 1.45am.
He said the vehicle had no license plates. The fire did not spread beyond the vehicle.
A fire engine and tanker from Brooklands put out the blaze, which "totally destroyed" the vehicle.
Said a police spokesperson: "It appears to have been a stolen car and all identifying details, including its VIN, had all been removed."
Police said Christchurch City Council has been advised and a tow truck was being sent to remove the car.
No injuries were reported.