The CT5 is built on a version of General Motors' well-known Alpha platform, versions of which have also been used for ATS and CTS, as well as the Chevrolet Camaro.
A tablet-style touchscreen with an updated version of the company's CUE infotainment software sticks up from the dashboard. It can also be controlled by a console-mounted rotary controller, as seen in the XT4 and XT6.