The Audi A5 Coupe and A5 Sportback are two different body styles of the same model, and as such, they have some similarities and differences. One of the most significant differences between the two is the number of doors. The A5 Coupe has two doors and a sloping roofline, which gives it a sportier, more stylish look. Meanwhile the A5 Sportback has four doors and a more practical, hatchback-style body, which provides more cargo space and easier access to the rear seats.
In terms of driving dynamics, the A5 Coupe may offer slightly sharper handling and better high-speed stability due to its lower roofline. However, the A5 Sportback has more interior space, including more legroom and headroom for rear-seat passengers. Both models are available with a range of engines, transmissions, and technology features, so choosing between them ultimately depends on personal preferences.