The ATS was incorporated into the Cadillac brand in 2013 as a new entry-level premium compact car. Debuting as a new direct competitor to the BMW 3 Series and Mercedes-Benz C-Class, the Cadillac ATS Sedan was developed with a great emphasis on driving dynamics. Standard equipped with rear-wheel drive, the Cadillac ATS Sedan offers all-wheel drive as an optional feature. Power for the ATS Sedan is derived from a naturally-aspirated 2.5-liter four-cylinder engine, turbocharged 2.0-liter four-cylinder or a 3.6-liter V-6 powerplant. Exterior styling of the Cadillac ATS Sedan would ultimately act as a hint towards the design direction for the CTS and even the Escalade. The front end appearance of the 2015 Cadillac ATS Sedan was tweaked with a new, larger Cadillac badge. OnStar with 4G LTE and Wi-Fi hotspot was also introduced as an option alongside the Cadillac CUE infotainment unit. Originally generating 321 horsepower, output from a revised 3.6-liter engine was increased to 335 horsepower for 2016. An eight-speed automatic transmission was also added to the 2016 ATS.