2004 GMC Sierra vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 3 year(s). Which means there will be less support and parts availability for 2004 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2004 GMC Sierra would be higher. At 5,963 cc (8 cylinders), 2004 GMC Sierra is equipped with a bigger engine. In terms of performance, 2004 GMC Sierra (325 HP) has 235 more horse power than 2007 Opel Astra. (90 HP). In normal driving conditions, 2004 GMC Sierra should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2004 GMC Sierra weights approximately 944 kg more than 2007 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2007 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2004 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, 2004 GMC Sierra (502 Nm) has 302 more torque (in Nm) than 2007 Opel Astra. (200 Nm). This means 2004 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
| 2004 GMC Sierra | 2007 Opel Astra | |
| Make | GMC | Opel |
| Model | Sierra | Astra |
| Year Released | 2004 | 2007 |
| Body Type | Pickup | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 5963 cc | 1248 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 325 HP | 90 HP |
| Torque | 502 Nm | 200 Nm |
| Engine Bore Size | 102 mm | 69.6 mm |
| Engine Stroke Size | 92 mm | 82 mm |
| Engine Compression Ratio | 9.4:1 | 18.0:1 |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 2274 kg | 1330 kg |
| Vehicle Length | 5790 mm | 4300 mm |
| Vehicle Width | 2130 mm | 1760 mm |
| Vehicle Height | 1880 mm | 1440 mm |
| Wheelbase Size | 3650 mm | 2620 mm |
| Fuel Consumption Overall | 15.7 L/100km | 4.8 L/100km |
| Fuel Tank Capacity | 102 L | 52 L |
