2025 Audi A3 Specs. They ranged between 16 and 19 inches in diameter, depending on the options. With the compact a3 sedan, audi attempts to imbue the smallest car in its lineup with a premium feel—and mostly succeeds.

It’s comfy enough up front, but the small rear seat and tiny trunk. Detailed specs and features for the 2025 audi a3 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain and more.