2007 GMC Sierra vs. 2009 Opel Astra
To start off, 2009 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2007 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2007 GMC Sierra would be higher. At 5,999 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (312 HP @ 4400 RPM) has 189 more horse power than 2009 Opel Astra. (123 HP @ 4000 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 2009 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 1392 kg more than 2009 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2009 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2007 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, 2007 GMC Sierra (506 Nm @ 4400 RPM) has 226 more torque (in Nm) than 2009 Opel Astra. (280 Nm @ 2000 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2009 Opel Astra.
Compare all specifications:
| 2007 GMC Sierra | 2009 Opel Astra | |
| Make | GMC | Opel |
| Model | Sierra | Astra |
| Year Released | 2007 | 2009 |
| Body Type | Pickup | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5999 cc | 1796 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 312 HP | 123 HP |
| Engine RPM | 4400 RPM | 4000 RPM |
| Torque | 506 Nm | 280 Nm |
| Torque RPM | 4400 RPM | 2000 RPM |
| Engine Bore Size | 102 mm | 82 mm |
| Engine Stroke Size | 92 mm | 90.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 2790 kg | 1398 kg |
| Vehicle Length | 6340 mm | 4260 mm |
| Vehicle Width | 2440 mm | 1760 mm |
| Vehicle Height | 1940 mm | 1470 mm |
| Wheelbase Size | 4010 mm | 2620 mm |
| Fuel Consumption Overall | 13.1 L/100km | 6 L/100km |
| Fuel Tank Capacity | 129 L | 52 L |
