In comparing the Audi S4's and the Cadillac ATS's specifications and ratings, the Audi S4 has the advantage in the area of base engine power. The Cadillac ATS has the advantage in the areas of typical lower range of pricing for one- to five-year-old used cars, and fuel efficiency and interior volume. Based on this comparison of the Audi S4's and the Cadillac ATS's specifications and ratings, the Cadillac ATS is a better car than the Audi S4.
Audi S4 vs. Cadillac ATS Pricing
A used 2018 Audi S4 ranges from $26,613 to $38,543 while a used 2018 Cadillac ATS is priced between $16,991 to $27,996.
Engine Power and Fuel Efficiency Comparison
For engine performance, the Audi S4’s base engine makes 354 horsepower, and the Cadillac ATS base engine makes 272 horsepower. The S4 is rated to deliver an average of 24 miles per gallon, with a highway range of 459 miles. The ATS is rated to deliver an average of 25 miles per gallon, with a highway range of 496 miles. This gives the Cadillac ATS the fuel efficiency and maximum range advantage over the Audi S4. Both models use premium unleaded.
Passenger Space Comparison
While both models are compact cars, the Cadillac ATS has the advantage of offering more interior volume, reflected in more and front leg room. The Audi S4 has the advantage in the areas of front head room, front shoulder room, rear head room, rear shoulder room, rear leg room, and cargo space.