The Cadillac ATS is the smallest sedan in the lineup. The smaller proportions of the ATS are almost identical to the BMW 3-Series, leaving the significantly larger CTS as an alternative to mid-sized luxury offerings. The ATS is offered with three different engines, in both rear-wheel-drive and all-wheel-drive models. With an available six-speed manual transmission, the ATS is clearly aimed at its segment rivals. Like other Cadillac models, the ATS is offered in a range of trim level packages including, Luxury, Performance, and Premium. With prices ranging from $34,000 to almost $50,000, the ATS is priced competitively with its German rivals.

The all-new ATS is a small rear-wheel-drive intended to compete with compact luxury models like the BMW 3-Series and Infiniti G sedan. The ATS is offered with a variety of powertrain options including a turbocharged four cylinder, large-displacement four-cylinder and a V6. All-wheel-drive will be optional on some models.