The Ruiner is an Imponte three-door liftback in the muscle class, a 1980s throwback that appeared in GTA IV, GTA V and GTA Online and is due to return in Grand Theft Auto VI. Its styling reportedly blends the third-generation Pontiac Firebird with the third-generation Chevrolet Camaro.
Vehicle data via GTA Wiki (Fandom), CC BY-SA 3.0.