All-new STS is based on the rear-drive Sigma platform that also underpins the CTS and SRX models. STS is offered with either a 255hp V6 or 320hp Northstar V8 and 5-speed automatic transmission. Both RWD and AWD models will be offered.
All-new 2.8L V6 appears in the entry-level CTS replacing last years 3.2L. Both the 2.8L and 3.6L engines are now available with either a 5-speed automatic or 6-speed manual transmission. The 400hp CTS-V performance model picks up a couple of new colors and a lighter grey interior.