Comparison Buick LaCrosse 5.3i V8 16V AFM (300 Hp) & Buick Regal II Coupe (facelift 1981) 3.8 V6 (238 Hp) Automatic & Buick Regal II Sedan 3.8 V6 (112 Hp) Automatic
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| Brand: | Buick | Buick | Buick |
| Model: | LaCrosse | Regal | Regal |
| Generation: | LaCrosse | Regal II Coupe (facelift 1981) | Regal II Sedan |
| Engine / modification: | 5.3i V8 16V AFM (300 Hp) | 3.8 V6 (238 Hp) Automatic | 3.8 V6 (112 Hp) Automatic |
| Production start: | 2004 year | 1981 year | 1978 year |
| Production end: | 2009 year | 1987 year | 1987 year |
| Coupe type: | Sedan | Coupe | Sedan |
| Num. of Doors: | 4 | 2 | 4 |
| Num. of seats: | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 13.8 l/100 km | 11.2 l/100 km | |
| Fuel consumption / economy - extra urban: | 9.8 l/100 km | 7.8 l/100 km | |
| Fuel consumption / economy - combined: | 12.4 l/100 km | 9.8 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.44 | 0.46 | |
| Fuel tank volume: | 66 l | 68 l | 68 l |
| Power: | 300 hp | 238 hp | 112 hp |
| Max power in: | 5800 rpm. | 4000 rpm. | 3800 rpm. |
| Torque: | 438 Nm @ 4000 rpm. | 447 Nm @ 2400 rpm. | 258 Nm @ 1600 rpm. |
| Model Engine: | LS4 | LC2 | |
| Engine position: | Front, longitudinal | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 5327 cm3 | 3791 cm3 | 3791 cm3 |
| Engine oil capacity: | 5.7 l | 4.7 l | |
| Coolant: | 12.6 l | 11.5 l | |
| Fuel System: | Multi-point injection | Multi-point injection | Carburettor |
| Aspiration / Turbine: | Turbocharger / Intercooler | ||
| Position of cylinders: | V engine | V engine | V engine |
| Valvetrain: | - | OHV | OHV |
| Number of cylinders: | 8 | 6 | 6 |
| Number of valves per cylinder: | 2 | 2 | 2 |
| Compression ratio: | 9.5 | 8 | 8 |
| Piston Stroke: | 92 mm | 86.36 mm | 86.36 mm |
| Cylinder Bore: | 96 mm | 96.52 mm | 96.52 mm |
| Wheel Drive: | Front wheel drive | Rear wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 4 | 4 Hydramatic | 3 Hydramatic |
| Length: | 5030 mm | 5095 mm | 4978 mm |
| Width: | 1855 mm | 1819 mm | 1806 mm |
| Height: | 1460 mm | 1387 mm | 1407 mm |
| Wheelbase: | 2805 mm | 2746 mm | 2746 mm |
| Front track: | 1565 mm | 1486 mm | 1486 mm |
| Rear (Back) track: | 1560 mm | 1468 mm | 1466 mm |
| Minimum volume of Luggage (trunk): | 455 l | 459 l | 459 l |
| Front suspension: | The depreciated rack | Independent, spring | Independent, spring |
| Rear suspension: | The depreciated rack | Suspension De-Dion | Suspension De-Dion |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs |
| Rear brakes: | Disc | Drum | Drum |
| Kerb Weight: | 1532 kg | 1477 kg | |
| ABS: | yes | ||
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls | Cone worm with recirculation balls |
| Minimum turning circle (turning diameter): | 12.8 m | 12.8 m | |
| Tire size: | 225/60 R16 | 215/65 R15 | 185/75 R14 |
| Wheel rims size: | 6.5J x 16 | R15 | R14 |