2003 GMC Sierra vs. 2006 Opel Signum
To start off, 2006 Opel Signum is newer by 3 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 5,967 cc (8 cylinders), 2003 GMC Sierra is equipped with a bigger engine. In terms of performance, 2003 GMC Sierra (321 HP @ 5000 RPM) has 113 more horse power than 2006 Opel Signum. (208 HP @ 6200 RPM). In normal driving conditions, 2003 GMC Sierra should accelerate faster than 2006 Opel Signum. With that said, vehicle weight also plays an important factor in acceleration. 2003 GMC Sierra weights approximately 660 kg more than 2006 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 four wheel drive (4WD), it will have significant more traction and grip than 2006 Opel Signum. In wet, icy, snow, or gravel driving conditions, 2003 GMC Sierra will offer significantly more control. 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 (370 Nm @ 4000 RPM) has 69 more torque (in Nm) than 2006 Opel Signum. (301 Nm @ 4000 RPM). This means 2003 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2006 Opel Signum. 2003 GMC Sierra has automatic transmission and 2006 Opel Signum has manual transmission. 2006 Opel Signum will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 GMC Sierra | 2006 Opel Signum | |
| Make | GMC | Opel |
| Model | Sierra | Signum |
| Year Released | 2003 | 2006 |
| Body Type | Pickup | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 5967 cc | 3175 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 321 HP | 208 HP |
| Engine RPM | 5000 RPM | 6200 RPM |
| Torque | 370 Nm | 301 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 2270 kg | 1610 kg |
| Vehicle Length | 5790 mm | 4640 mm |
| Vehicle Width | 2000 mm | 1800 mm |
| Vehicle Height | 1850 mm | 1470 mm |
| Wheelbase Size | 3650 mm | 2840 mm |
| Fuel Consumption Overall | 13.1 L/100km | 10.1 L/100km |
| Fuel Tank Capacity | 117 L | 60 L |
