Buick LaCrosse - 2012

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Overview

Model:

2012 LaCrosse FWD/AWD

Body style / driveline:

front-drive/all-wheel-drive, front-engine, four-door, five- passenger sedan

Construction:

integral

EPA vehicle class:

midsize sedan

Manufacturing location:

Kansas City, Kan.

Key competitors:

Acura TL, Lincoln MKZ, Lexus ES350

 

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Engines

Type:

Ecotec 2.4L DOHC I-4

3.6L V-6 VVT DI

Displacement (cu in / cc):

145 / 2384

217 / 3564

Bore & stroke (in / mm):

3.46 x 3.85 / 88 x 98

3.7 x 3.37 / 94 x 85.6

Block material:

cast aluminum

aluminum

Cylinder head material:

cast aluminum

cast aluminum

Valvetrain:

overhead camshafts, four-valves per cylinder, continuously variable valve timing for intake and exhaust

DOHC with four valves per cylinder; continuously variable valve timing

Ignition system:

individual coil-on-plug

individual coil-on-plug; individual cylinder knock control

Fuel delivery:

direct injection and electronic throttle control

direct injection

Compression ratio:

11.2:1

11.5:1

Horsepower
(hp / kW @ rpm):

182 / 136 @ 6700 rpm SAE certified

303 / 226 @ 6800 SAE certified*

Torque (lb.-ft. / Nm @ rpm):

172 / 233 @ 4900 rpm* SAE certified

264 / 358 @ 5300* SAE certified (FWD certified – AWD certification pending)

Recommended fuel:

regular unleaded

regular unleaded

Emissions controls:

close-coupled, catalytic converter; variable valve timing; positive crankcase ventilation evaporative system

dual close-coupled catalysts and single underfloor catalyst; variable valve timing, evaporative system

EPA-estimated fuel economy (city / hwy):

25 / 36

17 / 27

 

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Transmission

Type:

Hydra-Matic 6T40 six-speed automatic

Hydra-Matic 6T70 six-speed automatic

Application:

2.4L four-cylinder

3.6L V-6

Gear ratios: (:1):

 

 

First:

4.58

4.48

Second:

2.96

2.87

Third:

1.91

1.84

Fourth

1.45

1.41

Fifth:

1.00

1.00

Sixth:

0.75

0.74

Reverse:

2.94

2.88

Final drive ratio:

2.64

2.77

 

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Electric Drive System (for eAssist)

Type:

belt-driven, liquid-cooled motor/generator unit and lithium-ion battery system; air-cooled power electronics and battery pack

Maximum electric generating power

15 kW @ 1570-3180 rpm

Maximum electric motor torque (cranking)

110 lb.-ft. / 150 Nm

Maximum electric motor torque (electric assist)

79 lb.-ft. / 107 Nm @ 1,000 rpm

Maximum electric motor power (electric assist)

15 hp / 11.2 kW @ 1,000-2,200 rpm

Lithium-ion battery

115V, 0.5-kWh, 15 kW peak power

 

 

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Chassis/Suspension

Suspension (front):

MacPherson strut coil-over-spring; twin-tube dampers with gas-charged valving; hollow direct-acting stabilizer bar

Suspension (rear):

four-link (18-inch wheels); “H”-arm (1SL, 1SN, 1SP, 1SR, 1ST with Touring Package – 19-inch wheels and real-time damping and Sport Mode Selectivity)

Steering type:

electric variable-ratio, rack-and-pinion (1SB. 1SD. 1SL. 1SN. 1SP w/ 2.4L)
hydraulic power; rack-and-pinion (1SB, 1SD w/ 3.6L)
hydraulic power; variable-effort rack-and-pinion (1SL, 1SN, 1SP, 1SR, 1ST w/ 3.6L)

Steering ratio:

15.2:1

Steering wheel turns, lock-to-lock:

2.75

Turning circle (ft / m):

38.8 / 11.75

 

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Brakes

Type:

split, dual-circuit four-wheel-disc with power assist

Rotor diameter x thickness (in / mm):

V-6: front: 12.6 x 1.2 / 321 x 30 (vented)
rear: 12.4 x 0.9 / 315 x 23 (solid)
eAssist: front: 11.7 x 1.2 / 297 x 30 (vented)
rear: 11.5 x 1.2 / 292 x 30 (solid)

 

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Wheels/Tires

Wheel size and type:

17-inch steel with cover std. on 1SB, 1SD
17-inch alloy opt. on 1SB, 1SD
18-inch alloy std. on 1SL, 1SN, 1SP, 1SR,1ST
19-inch alloy opt. on 1SR, 1ST

Tires:

P245/50R17 all-season blackwall
P245/45R18 all-season blackwall
P245/40R19 all-season blackwall

 

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Dimensions

Exterior

Wheelbase (in / mm):

111.7 / 2837

Overall length (in / mm):

197 / 5003

Overall width (in / mm):

73.1 / 1858

Overall height (in / mm):

59.2 / 1503

Track (in / mm):

front: 61.7 / 1567
rear: 62 / 1576

Curb weight (lb / kg):

1SB, 1SD: 3829 / 1737
1SL, 1SN, 1SP FWD: 4026 / 1826
1SL, 1SN, 1SP AWD: 4196 / 1903
1SR, 1ST: 4045 / 1835

Interior

Seating capacity:

5 (2 front / 3 rear)

Headroom (in / mm):

front: 38 / 965
rear: 37.3 / 948

Legroom (in / mm):

front: 41.7 / 1058
rear: 40.5 / 1029

Shoulder room (in / mm):

front: 57.4 / 1459
rear: 56 / 1423

Hip room (in / mm):

front: 55.2 / 1402
rear: 53.9 / 1368

 

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Capacities

EPA interior volume (cu ft / L):

99 / 2805

Passenger volume (cu ft / L):

101.7 / 2878

Cargo volume (cu ft / L):

13.3 / 376 (1SB, 1SD, 1SL, 1SN,1SP)
12.8 / 362 (1SR, 1ST)
11.7 / 331 (eAssist)

Trailer towing maximum (lb / kg):

1000 / 454 (3.6L)

Fuel capacity (gal / L):

1SB, 1SD, 1SL, 1SN, 1SP FWD, 1SR, 1ST: 18.4 / 69.6
1SL, 1SN, 1SP AWD: 19.5 / 73.8

Engine oil (qt / L):

5 / 4.7 (2.4L)
5.5 / 5.2 (3.6L)

Cooling system ( qt / L):

9.6 /12 (2.4L)
7.6 / 7.2 (3.6L)

 

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*SAE certified.
Note: Information shown is current at time of publication.

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Pricing

  • For available vehicle and options pricing in the U.S. and to view actual window stickers, click here.

Translations

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