Audi A3 vs. Audi A5 In comparing the Audi A3's and the Audi A5's specifications and ratings, the Audi A3 has the advantage in the areas of typical lower range of pricing for one- to five-year-old used cars, and fuel efficiency and resale value. The Audi A5 has the advantage in the areas of interior volume and base engine power.

When we compare the Audi A3's and the Audi A5 Sportback's specifications and ratings, the Audi A3 has the advantage in the areas of new vehicle base pricing, reliability, resale value and overall quality score. The Audi A5 Sportback has the advantage in the area of interior volume. The Audi A3 and Audi A5 Sportback have the same base engine power.