2003 GMC Sierra vs. 2005 Opel Signum
To start off, 2005 Opel Signum is newer by 2 year(s). Which means there will be less support and parts availability for 2003 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2003 GMC Sierra would be higher. At 4,816 cc (8 cylinders), 2003 GMC Sierra is equipped with a bigger engine. In terms of performance, 2003 GMC Sierra (275 HP) has 151 more horse power than 2005 Opel Signum. (124 HP). In normal driving conditions, 2003 GMC Sierra should accelerate faster than 2005 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 GMC Sierra weights approximately 335 kg more than 2005 Opel Signum. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 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 2003 GMC Sierra. However, in wet, icy, snow, or gravel driving conditions, 2005 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, 2003 GMC Sierra (386 Nm) has 106 more torque (in Nm) than 2005 Opel Signum. (280 Nm). This means 2003 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Signum. 2005 Opel Signum has automatic transmission and 2003 GMC Sierra has manual transmission. 2003 GMC Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 GMC Sierra | 2005 Opel Signum | |
| Make | GMC | Opel |
| Model | Sierra | Signum |
| Year Released | 2003 | 2005 |
| Body Type | Pickup | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 4816 cc | 2171 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 275 HP | 124 HP |
| Torque | 386 Nm | 280 Nm |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 3 seats | 5 seats |
| Vehicle Weight | 1945 kg | 1610 kg |
| Vehicle Length | 5650 mm | 4640 mm |
| Vehicle Width | 2000 mm | 1800 mm |
| Vehicle Height | 1810 mm | 1470 mm |
| Wheelbase Size | 3380 mm | 2710 mm |
