2003 Opel Signum vs. 2012 Buick Regal
To start off, 2012 Buick Regal is newer by 9 year(s). Which means there will be less support and parts availability for 2003 Opel Signum. In addition, the cost of maintenance, including insurance, on 2003 Opel Signum would be higher. At 2,958 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2012 Buick Regal (220 HP @ 5300 RPM) has 45 more horse power than 2003 Opel Signum. (175 HP @ 5500 RPM) In normal driving conditions, 2012 Buick Regal should accelerate faster than 2003 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2012 Buick Regal weights approximately 90 kg more than 2003 Opel Signum. 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 Opel Signum (370 Nm @ 1900 RPM) has 18 more torque (in Nm) than 2012 Buick Regal. (352 Nm @ 2000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 2012 Buick Regal.
Compare all specifications:
| 2003 Opel Signum | 2012 Buick Regal | |
| Make | Opel | Buick |
| Model | Signum | Regal |
| Year Released | 2003 | 2012 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2958 cc | 2000 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 220 HP |
| Engine RPM | 5500 RPM | 5300 RPM |
| Torque | 370 Nm | 352 Nm |
| Torque RPM | 1900 RPM | 2000 RPM |
| Fuel Type | Diesel | Flex Fuel |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1575 kg | 1665 kg |
| Vehicle Length | 4640 mm | 4831 mm |
| Vehicle Width | 1800 mm | 1857 mm |
| Vehicle Height | 1470 mm | 1483 mm |
| Wheelbase Size | 2840 mm | 2738 mm |
