The 2018 Cadillac ATS is a luxury compact sedan available in four trims: Standard, Luxury, Premium Luxury, and Premium Performance. Its 2.0L Turbo engine produces 272 horsepower, while the optional 3.6L V6 engine produces 335 horsepower. Both engines are paired with an eight-speed automatic transmission and rear-wheel or all-wheel drive. Inside, the ATS features an 8-inch touchscreen infotainment system with Apple CarPlay and Android Auto compatibility. The refined interior is complemented by advanced safety features including forward collision alert, lane keep assist, and a safety alert seat. For 2018, Cadillac made the previously optional 10-speaker Bose surround-sound audio system standard on all trims.