2002 Buick Regal vs. 2004 Opel Astra
To start off, 2004 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2002 Buick Regal. In addition, the cost of maintenance, including insurance, on 2002 Buick Regal would be higher. At 3,791 cc (6 cylinders), 2002 Buick Regal is equipped with a bigger engine. In terms of performance, 2002 Buick Regal (205 HP @ 5200 RPM) has 106 more horse power than 2004 Opel Astra. (99 HP @ 6000 RPM). In normal driving conditions, 2002 Buick Regal should accelerate faster than 2004 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2002 Buick Regal weights approximately 245 kg more than 2004 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2002 Buick Regal (311 Nm @ 4000 RPM) has 161 more torque (in Nm) than 2004 Opel Astra. (150 Nm @ 3900 RPM). This means 2002 Buick Regal will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Astra.
Compare all specifications:
| 2002 Buick Regal | 2004 Opel Astra | |
| Make | Buick | Opel |
| Model | Regal | Astra |
| Year Released | 2002 | 2004 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 1598 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 205 HP | 99 HP |
| Engine RPM | 5200 RPM | 6000 RPM |
| Torque | 311 Nm | 150 Nm |
| Torque RPM | 4000 RPM | 3900 RPM |
| Engine Bore Size | 97 mm | 79 mm |
| Engine Stroke Size | 86 mm | 81.5 mm |
| Engine Compression Ratio | 9.4:1 | 10.5:1 |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1560 kg | 1315 kg |
| Vehicle Length | 4990 mm | 4520 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1510 mm |
| Wheelbase Size | 2780 mm | 2610 mm |
| Fuel Tank Capacity | 64 L | 52 L |
