2008 GMC Sierra vs. 2005 Opel Astra
To start off, 2008 GMC Sierra is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Opel Astra. In addition, the cost of maintenance, including insurance, on 2005 Opel Astra would be higher. At 5,300 cc (8 cylinders), 2008 GMC Sierra is equipped with a bigger engine. In terms of performance, 2008 GMC Sierra (316 HP @ 5200 RPM) has 232 more horse power than 2005 Opel Astra. (84 HP @ 5400 RPM). In normal driving conditions, 2008 GMC Sierra should accelerate faster than 2005 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2008 GMC Sierra weights approximately 1453 kg more than 2005 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2005 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2008 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, 2008 GMC Sierra (458 Nm @ 4400 RPM) has 320 more torque (in Nm) than 2005 Opel Astra. (138 Nm @ 2600 RPM). This means 2008 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2005 Opel Astra.
Compare all specifications:
| 2008 GMC Sierra | 2005 Opel Astra | |
| Make | GMC | Opel |
| Model | Sierra | Astra |
| Year Released | 2008 | 2005 |
| Body Type | Pickup | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 5300 cc | 1598 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 316 HP | 84 HP |
| Engine RPM | 5200 RPM | 5400 RPM |
| Torque | 458 Nm | 138 Nm |
| Torque RPM | 4400 RPM | 2600 RPM |
| Drive Type | 4WD | Front |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 2659 kg | 1206 kg |
| Vehicle Length | 6320 mm | 4290 mm |
| Vehicle Width | 2040 mm | 1720 mm |
| Vehicle Height | 1870 mm | 1470 mm |
| Wheelbase Size | 4010 mm | 2620 mm |
| Fuel Consumption Overall | 13.8 L/100km | 7.9 L/100km |
| Fuel Tank Capacity | 129 L | 52 L |
