A distant point noise of car outfield is simulated and calculated with software FLUENT: through the steady-state calculation obtains the surface acoustic power and noise sources distribution of the car body and analyzes qualitatively the noise sources; by means of transient calculations gets the sound pressure spectrum of the car outfield noise in a point. The simulation results show that the outfield aerodynamic noise sources mainly come from the front area of car, rear-view mirror, the front windscreen and front wheel; and the far field acoustic pressure level is increasing from front to back and larger closing to the rear of the car with the maximum reaching to 90.4 dB, while the acoustic pressure level in the arc area of 12 m in diameter is higher than that of 10 m in diameter with the maximum gap of 15.1 dB.