Comparison Buick Riviera III 7.5 (250 Hp) & Buick Regal III Sedan 3.8 V6 (173 Hp) Automatic
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| Brand: | Buick | Buick |
| Model: | Riviera | Regal |
| Generation: | Riviera III | Regal III Sedan |
| Engine / modification: | 7.5 (250 Hp) | 3.8 V6 (173 Hp) Automatic |
| Production start: | 1971 year | 1988 year |
| Production end: | 1973 year | 1996 year |
| Coupe type: | Coupe | Sedan |
| Num. of Doors: | 2 | 4 |
| Num. of seats: | 2+2 | 5 |
| Fuel consumption / economy - urban: | 12.4 l/100 km | |
| Fuel consumption / economy - extra urban: | 8.4 l/100 km | |
| Fuel consumption / economy - combined: | 10.7 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.35 | |
| Fuel tank volume: | 62 l | |
| Power: | 250 hp | 173 hp |
| Max power in: | 4000 rpm. | 4800 rpm. |
| Maximum speed: | 173 km/h | |
| Torque: | 508 Nm/2800 rpm. | 298 Nm @ 3200 rpm. |
| Model Engine: | 455 in³ Buick V8 | L27 |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 7458 cm3 | 3791 cm3 |
| Engine oil capacity: | 4.3 l | |
| Coolant: | 10.5 l | |
| Fuel System: | Multi-point injection | |
| Position of cylinders: | V engine | V engine |
| Valvetrain: | OHV | |
| Number of cylinders: | 8 | 6 |
| Number of valves per cylinder: | 2 | 2 |
| Compression ratio: | 8.5 | 8.5 |
| Piston Stroke: | 99 mm | 86.36 mm |
| Cylinder Bore: | 109.5 mm | 96.52 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 3 | 4 Hydramatic |
| Number of Gears (manual transmission): | 5 | |
| Length: | 5545 mm | 4943 mm |
| Width: | 2032 mm | 1801 mm |
| Height: | 1372 mm | 1384 mm |
| Wheelbase: | 3096 mm | 2730 mm |
| Front track: | 1615 mm | 1506 mm |
| Rear (Back) track: | 1626 mm | 1473 mm |
| Minimum volume of Luggage (trunk): | 447 l | |
| Front suspension: | The depreciated rack | |
| Rear suspension: | Wishbone | |
| Front brakes: | Disc | Ventilated discs |
| Rear brakes: | Drum | Disc |
| Kerb Weight: | 2042 kg | 1536 kg |
| ABS: | yes | |
| Power steering: | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 12.5 m | |
| Tire size: | 205/70 R14 | |
| Wheel rims size: | R14 |