2004 Opel Signum vs. 2011 GMC Sierra
To start off, 2011 GMC Sierra is newer by 7 year(s). Which means there will be less support and parts availability for 2004 Opel Signum. In addition, the cost of maintenance, including insurance, on 2004 Opel Signum would be higher. At 4,800 cc (8 cylinders), 2011 GMC Sierra is equipped with a bigger engine. In terms of performance, 2011 GMC Sierra (302 HP @ 5600 RPM) has 129 more horse power than 2004 Opel Signum. (173 HP @ 5500 RPM) In normal driving conditions, 2011 GMC Sierra should accelerate faster than 2004 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2011 GMC Sierra weights approximately 751 kg more than 2004 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 GMC Sierra is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2011 GMC Sierra. However, in wet, icy, snow, or gravel driving conditions, 2004 Opel Signum, being front wheel drive (FWD), will offer much better control with better grip. 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, 2011 GMC Sierra (413 Nm @ 4600 RPM) has 148 more torque (in Nm) than 2004 Opel Signum. (265 Nm @ 2500 RPM). This means 2011 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2004 Opel Signum. 2011 GMC Sierra has automatic transmission and 2004 Opel Signum has manual transmission. 2004 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2011 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 Opel Signum | 2011 GMC Sierra | |
| Make | Opel | GMC |
| Model | Signum | Sierra |
| Year Released | 2004 | 2011 |
| Body Type | Hatchback | Pickup |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 4800 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 173 HP | 302 HP |
| Engine RPM | 5500 RPM | 5600 RPM |
| Torque | 265 Nm | 413 Nm |
| Torque RPM | 2500 RPM | 4600 RPM |
| Fuel Type | Gasoline - Premium | Flex Fuel |
| Drive Type | Front | Rear |
| Transmission Type | Manual | 4-speed automatic |
| Vehicle Weight | 1560 kg | 2311 kg |
| Vehicle Length | 4640 mm | 5847 mm |
| Vehicle Width | 1800 mm | 2032 mm |
| Vehicle Height | 1470 mm | 1875 mm |
| Wheelbase Size | 2840 mm | 3645 mm |
| Fuel Tank Capacity | 60 L | 98 L |
