A deaf man who threw himself onto the bonnet of his £32,000 stolen car was driven for three quarters of a mile before he was flung onto the road.
Peter Broadbent suffered cuts and bruises
Police said Peter Broadbent, 64, suffered a terrifying ordeal on Friday.
"The thief kept shouting 'get off' but I was hanging on," said Mr Broadbent, who bought the new silver BMW X3 as a treat for when he retires in December.
Mr Broadbent sprawled across the bonnet during the incident at his garage in Denton, Greater Manchester.
He grabbed the wiper blades before eventually letting go.
Mr Broadbent was closing his garage on Windmill Lane when a thief jumped into his car and locked the doors.
He jumped onto the car but the thief drove off, and kept driving of speeds more than 30mph though six narrow streets.
The thief travelled right onto Windsor Road, left into Dane Road, right onto Gloucester Road, left to Anson Road, right into Thornley Road South and left onto Davenham Road.
He mounted the pavement several times to try and shake Mr Broadbent off the car.
Mr Broadbent was thrown from the bonnet, suffering cuts and bruises as the car turned onto Davenham Road.
'Pride and joy'
The offender then continued to drive the car away, possibly turning left onto Reddish Lane. Using sign language, with his daughter Cynthia interpreting, he said: "That car is my pride and joy.
"I jumped on the bonnet to try to stop him and also to draw attention to what was happening, because it was the only way I could."
The divorced father-of-one added: "Thinking about it now, I realise it was dangerous and I am lucky not to have been killed. I didn't think about it at the time - I just wanted to stop him taking the car."
Mr Broadbent said he would not repeat his actions, adding: "I could have been killed or they might have had a weapon."
Det Sgt Ged O'Connor said: "This must have been absolutely terrifying for Peter as he was driven for almost three quarters of a mile on the bonnet of the car.
"All he was doing was trying to defend his property but this individual seems to have valued the car more than Peter's safety."
Police have appealed for witnesses which happened at lunchtime.