Huh? I’ve never heard anyone refer to a car model without an article. If you purchased a Mustang you’d say “I got a Mustang”, not “I got Mustang.” Even when talking about the model in general rather than a specific car, it’s “The Mustang gets 30 MPG”, not “Mustang gets 30 MPG.”
(I’m from the PNW, in case it’s a regional thing.)
(I’m from the PNW, in case it’s a regional thing.)