Engines

Transmission

3.6L V-6 VVT DI

4.6L Northstar V-8 VVT

Hydra-Matic 6L50 6-spd

STS V-6 RWD

s

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s

STS V-6 AWD

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-

s

STS V-8 RWD

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s

s

STS V-8 AWD

-

s

s

Standard

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Optional

o

Not Available

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Model:

Cadillac STS V-6 and STS V-8

Body style / driveline:

STS V-6 and V-8: luxury four-door performance sedan with rear-wheel drive or all-wheel drive

Construction:

Unitized welded steel body with direct-mounted front cradle and rubber-isolated, multi-link independent rear suspension assembly

Manufacturing location:

Lansing Grand River Assembly, Lansing, Mich.

Key competitors:

STS V-6, V-8: BMW 5 and 7-Series, Mercedes Benz E-Class, Lexus GS/LS 430, Audi A6, Jaguar S-Type

3.6L V-6 VVT DI
(LLT)

4.6L Northstar V-8 VVT
(LH2)

Application:

std. STS V-6

opt. STS

Displacement (cc / cu in):

3564 / 217

4565 / 279

Bore & stroke (mm / in):

94 x 85 / 3.70 x 3.37

93 x 84 / 3.66 x 3.30

Block material:

Cast aluminum

Cast aluminum

Cylinder head material:

Semi-permanent mold aluminum

Semi-permanent mold aluminum

Valvetrain:

Dual-overhead camshafts, 4 valves per cylinder, continuously variable valve timing

Dual-overhead camshafts, 4 valves per cylinder, continuously variable valve timing

Ignition system:

Coil-on-plug with extended-life dual platinum-tipped spark plugs

Coil-on-plug with extended-life dual platinum-tipped spark plugs

Fuel delivery:

Direct injection

Returnless sequential fuel injection

Compression ratio:

11.3:1

10.5:1

Horsepower (hp / kW @ rpm):

302 / 225 @ 6300*

320 / 239 @ 6400

Torque (lb-ft / Nm @ rpm):

272 / 369 @ 5200*

315 / 427 @ 4400

Recommended fuel:

Regular unleaded

Premium recommended but not required

Maximum engine speed:

6700

6750

Emissions controls:

Evaporative system, close-coupled catalytic converters, positive crankcase ventilation, inlet and exhaust cam phasers, electronic throttle control, feedback air-fuel-ratio control

Evaporative system, close-coupled catalytic converters, positive crankcase ventilation, inlet and exhaust cam phasers, electronic throttle control, feedback air-fuel-ratio control

Estimated fuel consumption:

Mi/imp.gal (city / hwy / combined)

25 / 41 / 30
24 / 38 / 29 (AWD)

20 / 35 / 25
20 / 31 / 24 (AWD)

L/100km (city / hwy / combined)

11.4 / 6.9 / 9.4
11.7 / 7.4 / 9.8 (AWD)

14.1 / 8.1 / 11.4
14.2 / 9.1 / 11.9 (AWD)

Hydra-Matic 6L50 (V-6 and 4.6L V-8)

Type:

Six-speed electronically controlled automatic with lockup torque converter, clutch to clutch architecture, integral electro/hydraulic control module, Driver Shift Control, and performance algorithm liftfoot

Gear ratios (:1):

First:

4.06

Second:

2.37

Third:

1.55

Fourth:

1.15

Fifth:

0.85

Sixth:

0.67

Reverse:

3.20

Final drive ratio:

RWD: 3.42
AWD: 3.23

Standard / Luxury
Package

Performance Handling Package

Availability:

std on V-6

std on V-8, opt. on V-6

Front:

Independent, short/long arm, coil-over shock, anti-roll bar

Independent, short/long arm, coil-over shock, anti-roll bar

Rear:

Independent, modified multi-link, coil springs, automatic load leveling shock absorbers, anti-roll bar

Independent, modified multi-link, coil springs, magnetic ride control, pneumatic load leveling, anti-roll bar

Traction control system:

Full-range

Full-range

Stabilizer bar:

front:
Hollow, 33-mm diameter
rear:
RWD: hollow, 17-mm diameter
AWD: hollow, 24-mm diameter

front:
Hollow, 33-mm diameter
rear:
RWD: hollow, 19-mm diameter
AWD: hollow, 24-mm diameter

Steering type:

Power-assisted rack and pinion; ZF Servotronic II variable assist system available

Power-assisted rack and pinion; ZF Servotronic II variable assist system available

Steering ratio:

18.2:1, variable ratio

18.2:1, variable ratio

Steering wheel turns, lock-to-lock:

3

3

Turning circle, curb-to-curb (m / ft):

V-6 w/ 17-inch tires: 11.5 / 36.9
V-6 w/ 18-inch tires: 11.82 / 38.8

V-8 w/ 17-inch tires: 11.5 / 36.9
V-8 w/ 18-inch tires: 11.82 / 38.8

Luxury / Performance Package

Performance Handling Package

Availability:

std on V-6

std on V-8, opt. on V-6

Type:

Power-assist - vacuum with anti-lock control, traction control and StabiliTrak

Brembo 4-wheel ABS, 4-piston front and rear callipers and performance brake linings, std. StabiliTrak with opt active front steering (V-8 RWD only)

Rotor diameter x thickness

(mm / in):

front: 303 x 32 / 11.9 x 1.3, vented disc
rear: 298 x 26 / 11.7 x 1.0, vented disc

front: 355 x 32 / 13.97 x 1.25, vented disc
rear: 365 x 28 / 14.37 x 1.10, vented disc

Luxury / Performance Package

Performance Handling Package

Availability:

std. on V-6

std. on V-8, opt. on V-6

Wheel size and type:

17 x 7-inch cast aluminum (std) or 18 x 8-inch 14-spoke polished aluminum alloy

17 x 7.5 / 8-inch (split size) aluminum or 18 x 8.5-inch chrome-plated aluminum alloy

Tires:

Michelin V-rated, 235/50R17 & 255/45R17 or Michelin ALS 235/50R17

Michelin V-rated, 235/50R17 & 255/45R17 or Michelin W-rated, 235/50R18 & 255/45R18 or Michelin Pilot Sport, 255/45R18 summer only

Wheelbase (mm / in):

2956 / 116.4

Overall length (mm / in):

4986 / 196.3

Overall width (mm / in):

1844 / 72.6

Overall height (mm / in):

1463 / 57.6

Track (mm / in):

front: 1569 / 61.8
rear: 1581 / 62.3

Curb weight (kg / lb):

3.6L automatic: 1750 / 3857
3.6L automatic AWD: 1795 / 3660
4.6L automatic: 1779 / 3921
4.6L automatic AWD: 1919 / 4230

Weight distribution
(% front / rear):

V-6: 52 / 48
V-8: 54 / 46

Headroom (mm / in):

front: 983 / 38.7
rear: 962 / 37.9

Legroom (mm / in):

front: 1082 / 42.6
rear: 972 / 38.3

Shoulder room (mm / in):

front: 1488 / 58.6
rear: 1458 / 57.4

Hip room (mm / in):

front: 1387 / 54.6
rear: 1412 / 55.6

Seating capacity (front / rear):

2 / 3

EPA total volume (L / cu ft):

3304.6 / 116.7

EPA trunk volume (L / cu ft):

390.8 / 13.8

Trailer towing maximum (kg / lb):

454 / 1000

Fuel tank (imp. L / imp.gal):

66.2 / 14.5