The 2021 Cadillac CT4 enters its second year as the luxury band's compact sedan offering. Standard equipment now includes SiriusXM 360 L satellite radio and wireless Apple CarPlay and Android Auto compatibility. The Teen Driver system gains a Buckle to Drive feature that delays starting up to 20 seconds when the driver's belt isn't fastened.
The optional Technology Package adds a 12-inch HD gauge cluster. The mid-level Premium Luxury trim gets a new Diamond Sky design package. Cadillac's SuperCruise semi-autonomous driving system is available on the AT4 for the first time.