The 2009 Cadillac STS lineup gets no major changes following its 2008 freshening. STS is available in V6, V8, and high-performance STS-V models. All come with a 6-speed automatic transmission. Rear-wheel drive is standard, and all-wheel drive is available on all but the STS-V. V6 models have a 302-hp 3.6-liter engine. V8 models use a 320-hp 4.6-liter V8. The STS-V uses a supercharged 4.4-liter V8 with 469 hp. STS-V also includes a sport suspension and unique trim. Available safety features include ABS, traction control, antiskid system, front side airbags, and curtain side airbags. A lane departure and blind-spot alert system are offered, as is an active steering system designed to turn the front wheels into a skid when the rears lose traction. Also available are heated and cooled front seats and a touch screen navigation system with voice recognition and a wireless cell phone link. The STS Platinum has specific interior and exterior trim.