The crash happened at about 6:15 a.m. in the area of 39th Street and Lancaster Avenue in the Philadelphia's University City section.
According to police, the suspect stole a Dodge Durango from the front of a donut shop on Lancaster Avenue. He fled in the vehicle down Lancaster Avenue to Spring Garden Street where he made a right turn, striking an unmarked police car parked across the street from the 16th police district.
Police are searching for a heavy set man in a blue shirt with white writing on it.
Anyone with information is asked to contact Philadelphia Police at 215-686-TIPS (8477), text a tip to PPD TIP (773847) or through PhillyPolice.com.