Comparison Buick Regal III Coupe 2.8 V6 (127 Hp) Automatic & Buick Regal II Coupe (facelift 1981) 5.0 V8 (142 Hp) Automatic & Buick Regal VI Sportback 2.0 (250 Hp) AWD Automatic & Buick LaCrosse III 2.5 (194 Hp) Automatic & Buick Riviera III 7.5 (250 Hp)
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| Brand: | Buick | Buick | Buick | Buick | Buick |
| Model: | Regal | Regal | Regal | LaCrosse | Riviera |
| Generation: | Regal III Coupe | Regal II Coupe (facelift 1981) | Regal VI Sportback | LaCrosse III | Riviera III |
| Engine / modification: | 2.8 V6 (127 Hp) Automatic | 5.0 V8 (142 Hp) Automatic | 2.0 (250 Hp) AWD Automatic | 2.5 (194 Hp) Automatic | 7.5 (250 Hp) |
| Production start: | 1988 year | 1981 year | 2018 year | 2017 year | 1971 year |
| Production end: | 1996 year | 1987 year | 2019 year | 1973 year | |
| Coupe type: | Coupe | Coupe | Hatchback | Sedan | Coupe |
| Num. of Doors: | 2 | 2 | 4 | 4 | 2 |
| Num. of seats: | 5 | 5 | 5 | 5 | 2+2 |
| Fuel consumption / economy - urban: | 11.8 l/100 km | 13.1-13.8 l/100 km | 11.2 l/100 km | 9.4 l/100 km | |
| Fuel consumption / economy - extra urban: | 8.1 l/100 km | 9.4-10.2 l/100 km | 8.1 l/100 km | 6.7 l/100 km | |
| Fuel consumption / economy - combined: | 10.2 l/100 km | 11.8-12.4 l/100 km | |||
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.36 | 0.44 | |||
| Fuel tank volume: | 62 l | 68 l | 60 l | ||
| Power: | 127 hp | 142 hp | 250 hp | 194 hp | 250 hp |
| Max power in: | 4500 rpm. | 3200 rpm. | 5500 rpm. | 6300 rpm. | 4000 rpm. |
| Maximum speed: | 173 km/h | ||||
| Torque: | 217 Nm @ 3600 rpm. | 346 Nm @ 2000 rpm. | 400 Nm @ 3000-4000 rpm. | 254 Nm @ 4400 rpm. | 508 Nm/2800 rpm. |
| Model Engine: | LB6 | LV2 | LTG | LHN | 455 in³ Buick V8 |
| Engine position: | Front, transverse | Front, longitudinal | Front, transverse | Front, transverse | Front, longitudinal |
| Engine displacement: | 2838 cm3 | 5033 cm3 | 1998 cm3 | 2500 cm3 | 7458 cm3 |
| Engine oil capacity: | 4.3 l | 4.7 l | 5.7 l | 4.7 l | |
| Coolant: | 12.6 l | 15.0 l | 5.0 l | 9.0 l | |
| Fuel System: | Multi-point injection | Carburettor | Direct injection | Direct injection | |
| Aspiration / Turbine: | Turbocharger | ||||
| Position of cylinders: | V engine | V engine | Inline | Inline | V engine |
| Valvetrain: | OHV | DOHC-CVVT | |||
| Number of cylinders: | 6 | 8 | 4 | 4 | 8 |
| Number of valves per cylinder: | 2 | 2 | 4 | 4 | 2 |
| Compression ratio: | 8.9 | 8 | 8.5 | ||
| Piston Stroke: | 76.2 mm | 85.98 mm | 86 mm | 99 mm | |
| Cylinder Bore: | 88.9 mm | 96.52 mm | 86 mm | 109.5 mm | |
| Wheel Drive: | Front wheel drive | Rear wheel drive | All wheel drive (4x4) | Front wheel drive | Rear wheel drive |
| Number of Gears (automatic transmission): | 4 Hydramatic | 3/4 Hydramatic | 8 | 6 | 3 |
| Number of Gears (manual transmission): | 5 | ||||
| Length: | 4882 mm | 5095 mm | 4900 mm | 5016 mm | 5545 mm |
| Width: | 1824 mm | 1819 mm | 1862 mm | 1867 mm | 2032 mm |
| Height: | 1346 mm | 1387 mm | 1455 mm | 1460 mm | 1372 mm |
| Wheelbase: | 2730 mm | 2746 mm | 2830 mm | 2906 mm | 3096 mm |
| Front track: | 1506 mm | 1486 mm | 1595 mm | 1598 mm | 1615 mm |
| Rear (Back) track: | 1473 mm | 1468 mm | 1600 mm | 1603 mm | 1626 mm |
| Minimum volume of Luggage (trunk): | 439 l | 459 l | 892 l | 405 l | |
| Maximum amount of Luggage (trunk): | 1719 l | ||||
| Front suspension: | The depreciated rack | Independent, spring | Independent type McPherson | Independent type McPherson | |
| Rear suspension: | Wishbone | Suspension De-Dion | Multi-link independent | Multi-link independent | |
| Front brakes: | Ventilated discs | Ventilated discs | Disc | Disc | Disc |
| Rear brakes: | Disc | Drum | Disc | Disc | Drum |
| Kerb Weight: | 1380 kg | 1559 kg | 1550 kg | 2042 kg | |
| ABS: | yes | yes | yes | ||
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls | Steering rack and pinion | ||
| Power steering: | Electric Steering | ||||
| Minimum turning circle (turning diameter): | 12.5 m | 12.8 m | 12.5 m | 11.6 m | |
| Tire size: | 195/75 R14 | 195/75 R14 | 245/45 R18 | 235/50 R18 | |
| Wheel rims size: | R14 | R14 | R18 | R18 |