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 5,965 cc (8 cylinders), 2004 GMC Sierra is equipped with a bigger engine. In terms of performance, 2004 GMC Sierra (300 HP) has 103 more horse power than 2007 Opel Astra. (197 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 897 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.
Let's talk about torque, 2004 GMC Sierra (488 Nm) has 226 more torque (in Nm) than 2007 Opel Astra. (262 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 | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 1998 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 300 HP | 197 HP |
| Torque | 488 Nm | 262 Nm |
| Engine Bore Size | 102.1 mm | 86 mm |
| Engine Stroke Size | 92 mm | 86 mm |
| Engine Compression Ratio | 9.4:1 | 8.8:1 |
| Transmission Type | Manual | Manual |
| Number of Seats | 3 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 2282 kg | 1385 kg |
| Vehicle Length | 5650 mm | 4260 mm |
| Vehicle Width | 2000 mm | 1760 mm |
| Vehicle Height | 1890 mm | 1470 mm |
| Wheelbase Size | 3380 mm | 2620 mm |
| Fuel Tank Capacity | 129 L | 52 L |
