Which Audi model is a four-door coupe based on the A5?

The Audi A5 Sportback is Audi’s four-door coupé-style model based on the A5.

Unlike the two-door A5 Coupé and the open-top A5 Cabriolet, the Sportback has four frameless doors and a long, tapering fastback roofline. It uses a rear liftgate rather than a conventional sedan trunk, combining coupé-like styling with easier passenger access and a more useful cargo opening.

The first A5 Sportback appeared in the first-generation A5 family and shared its broader engineering relationship with the Audi A4. Its interior was described as closer to the A4 saloon than to the two-door A5, reflecting the Sportback’s practical role. Audi later expanded the range with S5 Sportback and RS5 Sportback performance versions.

The A5 name can cause confusion because it covers several body styles. The Cabriolet is a convertible, the Coupé is a two-door car, and the Sportback is the five-door liftback. The Audi A7 is also a four-door coupé-style liftback, but it belongs to a larger class and is related more closely to the A6 than to the A5.