With the all-new 2005 cadillac sts, Cadillac's mid-size luxury sedan finally has a chance to compete head to head with the likes of the BMW 5 Series and Mercedes E-Class. Based on the same General Motors Sigma platform that supports the smaller CTS, the new STS is longer than its predecessor but a little shorter overall. The result is a vehicle that feels much nimbler than its size would suggest. Its rear-wheel drive, for example, allows the car to be pushed hard with confidence without resorting to excessive body roll or dive.
In addition, a more supple ride is possible thanks to the standard 3.6-liter V6 engine and optional 4.6-liter Northstar. Both use GM's latest technology, with double overhead cams and four valves per cylinder, as well as variable-valve timing that constantly varies the operation of the intake and exhaust ports for peak performance. This engine produces plenty of torque at all engine speeds, allowing the STS to be driven quickly from a stop.
The STS's handling is impressive, too. It has moderate body roll in corners and is a breeze to maneuver in traffic. Steering feel is delicate and precise, with a light on-center sensation that's far more precise than one might expect from an American luxury sedan.
Cadillac also has a reputation for state-of-the-art technology, and the company doesn't disappoint with the 2005 STS. The available touch-screen navigation system is more user-friendly than anything from recent competitors. And the car's standard OnStar emergency telecommunications is among the best in the industry.
