2003 Buick Regal vs. 2003 Opel Signum
To start off, both 2003 Buick Regal and 2003 Opel Signum were released in the same year (2003). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 3,789 cc (6 cylinders), 2003 Buick Regal is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (207 HP @ 6200 RPM) has 10 more horse power than 2003 Buick Regal. (197 HP @ 5200 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 2003 Buick Regal. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 53 kg more than 2003 Buick Regal. 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 12 more torque (in Nm) than 2003 Opel Signum. (300 Nm @ 4000 RPM). This means 2003 Buick Regal will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Signum.
Compare all specifications:
| 2003 Buick Regal | 2003 Opel Signum | |
| Make | Buick | Opel |
| Model | Regal | Signum |
| Year Released | 2003 | 2003 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3789 cc | 3173 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 197 HP | 207 HP |
| Engine RPM | 5200 RPM | 6200 RPM |
| Torque | 312 Nm | 300 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 97 mm | 87.5 mm |
| Engine Stroke Size | 86 mm | 88 mm |
| Engine Compression Ratio | 9.4:1 | 10.0:1 |
| 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 | 1613 kg |
| Vehicle Length | 4990 mm | 4640 mm |
| Vehicle Width | 1850 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2780 mm | 2840 mm |
| Fuel Tank Capacity | 64 L | 60 L |
