A completely new replacement for the prior generation, the STS is now a rear-wheel-drive four-door luxury sedan offered with a 3.6-liter V6 engine that produces 255 horsepower (base model) or the 4.6-liter Northstar V8 that generates 320 horsepower. The V6 version is also available in all-wheel-drive, and all engines feature a 6L50 six-speed automatic transmission with driver-shift from a 32-bit transmission controller.

Select a used 2005 Cadillac STS trim level below

STS-V6 2005 Cadillac STS Sedan 4D

STS-V8 2005 Cadillac STS Sedan 4D 2005 Cadillac STS Sedan 4D AWD