2003 Buick Regal vs. 2005 Opel Astra
To start off, 2005 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Buick Regal. In addition, the cost of maintenance, including insurance, on 2003 Buick Regal would be higher. At 3,789 cc (6 cylinders), 2003 Buick Regal is equipped with a bigger engine. In terms of performance, 2003 Buick Regal (197 HP @ 5200 RPM) has 100 more horse power than 2005 Opel Astra. (97 HP @ 6000 RPM). In normal driving conditions, 2003 Buick Regal should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Buick Regal weights approximately 379 kg more than 2005 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, 2003 Buick Regal (312 Nm @ 4000 RPM) has 169 more torque (in Nm) than 2005 Opel Astra. (143 Nm @ 3600 RPM). This means 2003 Buick Regal will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra. 2003 Buick Regal has automatic transmission and 2005 Opel Astra has manual transmission. 2005 Opel Astra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Buick Regal will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Buick Regal | 2005 Opel Astra | |
| Make | Buick | Opel |
| Model | Regal | Astra |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3789 cc | 1598 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 197 HP | 97 HP |
| Engine RPM | 5200 RPM | 6000 RPM |
| Torque | 312 Nm | 143 Nm |
| Torque RPM | 4000 RPM | 3600 RPM |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1560 kg | 1181 kg |
| Wheelbase Size | 2780 mm | 2500 mm |
| Fuel Tank Capacity | 64 L | 52 L |
