2009 Cadillac STS: What's New, Specs & Features
Last updated August 4, 2026
For 2009, the STS lineup adds the base STS and the high-performance STS-V. Bluetooth phone capability also expands to regular STS models without navigation, while the engines, styling, safety hardware, and body structure carry over.
About the 2009 Cadillac STS
2nd-generation STS (2005-2011), second year after the 2008 refresh.
Cadillac positions the STS as a serious performance-luxury sedan rather than a soft traditional cruiser. In 2009 it serves as the brand’s driver-focused four-door above the CTS in size and below the DTS in old-school comfort, blending bold styling, strong engines, available all-wheel drive, and a long list of technology features. The appeal is a roomy Cadillac sedan that feels sharper and more athletic on the road than buyers might expect from the badge.
The base STS is the comfort-focused sport sedan, with leather upholstery, Bose audio, push-button start, and rear parking sensors. The STS-V is the rare performance flagship, pairing a 469-hp supercharged V8 with upgraded brakes and suspension, navigation, a head-up display, and heated leather seating.
What changed, by category
2009 Cadillac STS specs and features by trim
| Feature | ||
|---|---|---|
| Engine | V6, 3.6 Liter / V8, 4.6 Liter | V8, Supercharged, 4.4L |
| Transmission | Automatic, 6-Spd w/Overdrive | Automatic, 6-Spd w/Overdrive |
| Drivetrain | RWD | RWD |
| Fuel Type | Gas | Gas |
| MPG City | 15–17 mpg | 13 mpg |
| MPG Highway | 24–26 mpg | 19 mpg |
| Horsepower | 302–320 hp | 469 hp |
| Torque | 272–315 lb-ft | 439 lb-ft |
| Max Towing | 1000 lb | 1000 lb |
| Trunk/Cargo | 13.8 cu-ft | 13.8 cu-ft |
| Rear Legroom | 38.3 in | 38.3 in |
| Seats | 5 | 5 |
| Doors | 4 | 4 |
| Adaptive Cruise Control | ||
| Automatic Headlights | ||
| Blindspot Sensors | ||
| Lane Departure Warning | ||
| Rain Sensing Windshield Wipers | ||
| Alloy Wheels | ||
| Fog Lights | ||
| HID Headlights | ||
| Memory Exterior Mirrors | ||
| Power Moonroof | ||
| Rear Spoiler | ||
| Bluetooth | ||
| Front DVD Entertainment System | ||
| Navigation System | ||
| Premium Audio | ||
| Rear DVD Entertainment System | ||
| Satellite Radio | ||
| Aluminum Interior Trim | ||
| Auto-Dimming Interior Mirror | ||
| Dual-Zone Climate Control | ||
| Heated Front Seats | ||
| Heated Rear Seats | ||
| Heated Steering Wheel | ||
| Integrated Garage Door Opener | ||
| Leather Interior Trim | ||
| Leather Seats | ||
| Memory Driver's Seat | ||
| Memory Steering Wheel | ||
| Remote Start | ||
| Ventilated Front Seats | ||
| Wood Interior Trim | ||
Frequently asked questions
What is the biggest change to the 2009 Cadillac STS?
The biggest change is the addition of base STS and STS-V lineup entries. The STS-V is the high-performance version, with a 469-hp supercharged V8, upgraded brakes, and a sportier suspension.
Does the 2009 Cadillac STS have Bluetooth?
Yes. Bluetooth phone capability expands to regular 2009 STS models without navigation, making it more broadly offered than it was for 2008.
Did the 2009 Cadillac STS get new engines?
No. The regular STS carries over its 302-hp direct-injected V6 and 4.6-liter V8, while the STS-V uses a 469-hp supercharged 4.4-liter V8.
Was the 2009 Cadillac STS redesigned?
No. The 2009 STS remains part of the second generation and carries over the exterior and interior updates introduced for 2008. There are no lineup-wide styling, chassis, or body-structure revisions for 2009.
Is the 2009 Cadillac STS meaningfully different from the 2008 model?
Only modestly. The main differences are the base STS and STS-V lineup additions and broader Bluetooth phone capability; the core engines, styling, safety hardware, and structure otherwise carry over.