By Comparison

Audi A6

Base price: $48,000 Solid, comfortable sedan offers a range of power choices. S6 makes 450 h.p.

Cadillac ATS

Base price: $47,000 Mid-range four-door surprises with luxury and a 640-h.p. CTS-V.

BMW 5 Series

Base price: $51,000 (est.) New 2018 model will return with the usual tame and a full-on 560-horse M model.