Page 1: Intro
Milford, Michigan – At this rate, Cadillac is going to get a nasty reputation, an edgy rep, one reserved for the cars that go fastest and make real drivers smile. It started with the CTS, an edgy and sporty luxury sedan, and went as far as the CTS-V – and the SRX – a downright refreshing luxury suv. Now Cadillac has reinvigorated the most senior member of its lineup -- the Seville – dropping the Seville and keeping the STS, forsaking front wheel drive and adding RWD -- riding on the same Sigma architecture that founds the CTS sedan and SRX sport utility.
The new 2005 Cadillac STS also follows the styling trend at GM’s luxury division. Chiseled body lines, jeweled vertical headlights, and “over/under” front bumper driving/fog lights are particularly reminiscent of the newly-introduced CTS. Both the XLR droptop and SRX also share many design cues employed in the STS, although some of the big sedan’s lines have been softened for the luxury market. Clearly, however, STS is another step in redefining the quickly evolving Cadillac brand.
Cadillac offers two engines in this full-size 4-door luxury sedan, both sophisticated units equipped with Variable Valve Timing that help deliver smooth, efficient performance. A 24-valve V6 engine displaces 3.6 liters and arrives standard in the base car. Power is an impressive 255 hp. and 255 lb.-ft. of torque. More importantly, however, is the engine’s ability to deliver 90 percent of peak torque from 1,600 to 5,800 rpm.
Page 2: Powerplant
We drove all three models of this upgraded performance sedan recently, following a presentation in GM’s on-site NVH testing facilities, where a vehicle’s quietness is measured in every way imaginable. Whether it was at all by suggestion, or entirely objective, we found the first item of note was the STS’s quietness.
Getting into the STS was easy with wide-opening doors, along with seats and a steering wheel that accommodate almost all body sizes and driving positions. After engaging the push-button start, we gave the upscale cabin high marks; however, despite the age of STS buyers having descended, we still feel its look and feel is for “mature buyers”.
Page 3: Engineering
Speaking of stimulation, its handling is superb, and in our case, assessed over a road course with a good deal of rough and uneven pavement—during a rain storm, to boot. Steering input is spot on for our tastes, and we found just enough feedback from tires and suspension to keep us zipping along at competent speeds.
Page 4: Every day driving
STS models with the V8 engine are available with Adaptive Cruise Control (ACC), a system that maintains prudent distances behind others via radar. When the system cannot adequately adjust vehicle speed, like during emergency braking, it alerts the driver both audibly and visually through the Head-Up Display. HUD, another option, projects vital information on the windshield for the driver to read. Cadillac reminds customers, however, that ACC does not substitute for the driver’s attention to traffic.
Page 5: Intellibeam
The STS could prove a formidable opponent to other mid-size luxury sedans. Five-series and 7-Bimmers, E-class Benzes, and GS/LS430 Lexuses take note - the General now has a contender.
Page 6: FAQs
The new STS, which replaces the Seville STS, is a luxury 4-door performance sedan that has been significantly redesigned and upgraded for 2005.What other luxury rides would STS buyers likely cross shop?
Cadillac says it STS buyers would also look at, or cross over from, models such as the BMW 5-and 7-Series, Mercedes E-Class models, Lexus GS/LS 430, Audi A6 and Jaguar S-Type.
What are some of the STS’s bells and whistles?
STS comes loaded with high-tech (and often connected to both active and passive safety) wizardry-the price of entry in the segment of the market it competes in. It has StabiliTrak, Magnetic Ride Control, Adaptive Cruise Control, Keyless Access with Push Button start, Adaptive Remote Start, Head-Up Display and OnStar.
Page 7: FAQs
Cadillac offers two engines. Both are sophisticated units equipped with Variable Valve Timing that help deliver smooth, efficient performance. A 24-valve V6 engine displaces 3.6 liters and arrives standard in the base car. Power is an impressive 255 hp. and 255 lb.-ft. of torque. More importantly, however, is the engine’s ability to deliver 90 percent of peak torque from 1,600 to 5,800 rpm. Pricier STS models arrive with a 4.6-liter Northstar V8, producing 320 horses and 315 lb.-ft. of twist. In addition to VVT, both powerplants operate according to electronic throttle control. A 5-speed automatic is the only transmission offered at the present.Is it RWD only?
Both RWD and AWD are available in V8-powered Caddys, while V6 sedans initially make do with rear-drive only. Eventually, however, AWD will become available across the lineup. Under most circumstances this AWD system distributes torque in a 40/60 split favoring the rear. But when traction fades, all four wheels adjust to maximize grip. The AWD hardware works in harmony with StabiliTrak, GM’s electronic stability system that includes traction control.
Page 8: Writer's Notes
Engine: 3.6-liter V6 (255 hp @6,500 rpm, 255 lb.-ft. @3,200 rpm); 4.6-liter V8 (320 hp @6,400 rpm, 315 lb.-ft. @4,400 rpm)
Transmission: 5-speed automatic
Wheelbase: 116.4 in.
Length: 196.3 in.
Width: 72.6 in.
Height: 57.6 in.
Head/legroom: front: 38.7/42.6 in.; rear: 37.9/38.3 in.
Hip/shoulder room: front: 54.6/58.6 in.; rear: 55.6/57.4 in.
Curb weight, lbs.: 3,900-4,200 (estimated)
Fuel economy: NA
Safety equipment: dual front airbags; front side-impact airbags; front and rear curtain airbags; four wheel disc brakes with ABS; StabiliTrak stability and traction control; tire pressure monitoring