2008 Cadillac STS vs. Its Competition

2008 Cadillac STS 4-door Sedan V6 RWD w/1SC Open Doors
Martin Padgett Martin Padgett Editorial Director

With V-6 and V-8 engines and a choice of rear- or all-wheel drive, the 2008 Cadillac STS is quite competitive versus the mid-size luxury sedans from Germany and Japan, but it arguably doesn't look or feel as up-to-date as the 5-Series or E-Class inside.

In terms of performance, the base STS has perkier performance than either the E350 or the BMW 528i, though the sweet engine in the new 535i may have it beat.

The E-Class more closely fits a definition of traditional luxury, with a classy appearance, while the 5-Series and M35/M45 feel sportier from behind the wheel.

The Infiniti M models have a surprisingly roomy interior--including a spacious backseat, which is somewhat hard to find in this class--but the ride isn't as settled and road noise can be an issue.

And if you're especially green, you might want to consider the E320 Bluetec diesel, which returns standout highway fuel economy in the mid-30s.

2008 Cadillac STS 4-door Sedan V6 RWD w/1SC Open Doors2008 Cadillac STS
Browse Used Listings
2008 Audi A6 4-door Sedan 4.2L quattro *Ltd Avail* Side Exterior View2008 Audi A6
Browse Used Listings
2008 BMW M52008 BMW 5-Series
Browse Used Listings
2008 Mercedes-Benz E Class 4-door Wagon 6.3L AMG RWD Angular Front Exterior View2008 Mercedes-Benz E Class
Browse Used Listings
Quick Specs
The STS is middle-of-the-pack in many respects, but it stands out as Cadillac’s technology flagship.
The 2008 Audi A6 has plenty of competition, but its graceful look and feel set it apart from more brutal German and more clinical Japanese iron.
The 2008 BMW M5 has electrifying performance, but is saddled with an overdose of technology and a body in need of a few nips and tucks.
If you appreciate luxury and complex engineering solutions, then you'll love the 2008 Mercedes-Benz E-Class.
MSRP From   
Gas Mileage   
13 MPG City / 26 MPG Hwy14 MPG City / 27 MPG Hwy11 MPG City / 27 MPG Hwy12 MPG City / 32 MPG Hwy
Gas V6Gas V6Gas I6Gas V6
EPA Class   
Style Name   
4-Door Sedan V6 AWD w/1SA4-Door Sedan 3.2L FrontTrak4-Door Sedan 528i RWD4-Door Sedan Sport 3.5L RWD
All Wheel DriveFront Wheel DriveRear Wheel DriveRear Wheel Drive
Passenger Capacity   
Passenger Doors   
Body Style   
4 Door Sedan4 Door Sedan4 Door Sedan4 Door Sedan
AutomaticAutomatic CVTManualAutomatic w/OD
Detailed Spec Comparison
 2008 Cadillac STS vs. 2008 Audi A62008 Cadillac STS vs. 2008 BMW 5-Series2008 Cadillac STS vs. 2008 Mercedes-Benz E Class