Police are looking for the suspect who stole a white 2004 Volvo S80 at gunpoint on Wednesday night.
Police say the victim was trying to sell the car on the app Offer Up.
They say the suspect forced the victim out of the car at 3 Maple St. after a test drive together and took off toward Cherry Street.
The suspect is described as a tall, thin, clean-cut Black man in his early 20s.
Police say to call 911 if you spot the car and do not try to make contact with the driver or passengers.
Anyone with information is asked to call Milford detectives at 203-783-4753.