STS Performance

Item

Description

0-60 mph

6.7 sec.

Top speed

150 mph*

Braking, 70-0 mph

182 ft.

EPA est. mpg

17 city/28 hwy.

Max. cruising range

481 miles/774 km**

SLS Performance

Item

Description

0-60 mph

7.7 sec.

Top speed

112 mph

Braking, 70-0 mph

192 ft.

EPA est. mpg

17 city/28 hwy.

Max. cruising range

481 miles/774 km**

Engine

Item

Description

Northstar 4.6L V8, 32-valve DOHC

STS: 300 hp, 295 ft-lbs torque

SLS: 275 hp, 300 ft-lbs torque

Aluminum block & heads

3.66 in. (93 mm) x 3.31 in. (84 mm)

(bore x stroke)

Displacement

279 cu. in./4565 cc

Compression

10.0:1

Valvetrain

2-stage chain-driven double overhead camshafts, roller/follower valvetrain, 4 valves per cylinder

Ignition

Crank-triggered individual coil with platinum-tipped plugs

Induction

Tuned, sequential port fuel injection

Max. revs.

6,500

Coolant

DEX-COOL, up to 150,000 miles***, ****

Recommended fuel

Unleaded regular

Driveline

Item

Description

Brake/Transmission Shift Interlock

Type

Front engine, front-wheel drive

Transaxle

Electronically controlled 4-speed automatic with overdrive and viscous lock up torque converter clutch

Ratios

1st: 2.96:1

2nd: 1.63:1

3rd: 1.00:1

4th: 0.68:1

Final drive ratio

STS 3.71:1

SLS 3.11:1

Chassis/Suspension

Item

Description

Suspension

Continuously Variable, Road-Sensing

Front: Independent, MacPherson strut/coil spring with stabilizer bar

Rear: Independent, MultiLink coil springs, stabilizer bar and automatic level control

Dampers, front/rear

Electronic

Stabilizer bar dia., front

STS 1.18 in./30 mm

SLS 1.10 in./28 mm

Stabilizer bar dia., rear

STS .87 in./22 mm

SLS .71 in./18 mm

Steering type

Rack-and-pinion with Magnasteer III speed-sensitive variable-assist

Steering ratio

14.8:1

Turns, lock-to-lock

2.4

Turning circle

42.7 ft./13.03 m

Wheels

Cast aluminum, 16 in. (406 mm) x 7 in. (178 mm)

STS STANDARD

Open 16" x 7" (406 x 178 mm) cast aluminum

STS OPTIONAL

16" x 7" (406 x 178 mm) cast aluminum, chrome finish

SLS STANDARD

Machined 16" x 7" (406 x 178 mm) cast aluminum

SLS OPTIONAL

Machined 16" x 7" (406 x 178 mm) cast aluminum, chrome finish

Tires

STS: Goodyear Eagle LS P235/60R16

H-rated, Optional: Eagle P235/60ZR16

SLS: Goodyear Integrity P235/60R16 S-rated

Brakes

Power 4-wheel disc with ABS and road texture detection

Front discs

Vented, 11.85 in. (301 mm) x 1.26 in. (32 mm)

Rear discs

solid, 11.61 in. (295 mm) x .43 in. (11 mm)

Stability Enhancement System

StabiliTrak, all-speed

Traction control system

All-speed

Capacities

Item

Description

Oil

7 qts./6.6 L

Coolant

12.5 qts./11.8 L

Fuel

18.5 gal./70.7 L

Battery

12 v/880 cca

Towing

3000 lbs./1361 kg

Trunk

15.7 cu. ft./445 L

Interior Dimensions

Item

Description

Head room

Front: 38.2 in./969 mm

Rear: 38.0 in./966 mm

Leg room

Front: 42.5 in./1079 mm

Rear: 38.2 in./970 mm

Hip room

Front: 55.6 in./1411 mm

Rear: 57.5 in./1460 mm

Shoulder room

Front: 59.1 in./1501 mm

Rear: 58.0 in./1474 mm

Interior volume

119.8 cu. ft./3.39 cu. m

Seating capacity

Five persons

STS STANDARD

Open 16" x 7" (406 x 178 mm)cast aluminum

STS OPTIONAL

16" x 7" (406 x 178 mm) cast aluminum, chrome finish

SLS STANDARD

Machined 16" x 7" (406 x 178 mm) cast aluminum

SLS OPTIONAL

Machined 16" x 7" (406 x 178 mm) cast aluminum, chrome finish

* Requires optional Z-rated tires.

** Estimated highway range: Multiply EPA highway estimate by fuel tank capacity.

*** Maintenance needs vary with different uses and driving conditions. See your Owner's Manual for more information.

**** Systems originally filled with DEX-COOL must be serviced with DEX-COOL.