2005 GMC Sierra vs. 2007 Opel Astra
To start off, 2007 Opel Astra is newer by 2 year(s). Which means there will be less support and parts availability for 2005 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2005 GMC Sierra would be higher. At 5,965 cc (8 cylinders), 2005 GMC Sierra is equipped with a bigger engine. In terms of performance, 2005 GMC Sierra (300 HP) has 122 more horse power than 2007 Opel Astra. (178 HP). In normal driving conditions, 2005 GMC Sierra should accelerate faster than 2007 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 1403 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 2005 GMC Sierra is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2005 GMC Sierra. However, in wet, icy, snow, or gravel driving conditions, 2007 Opel Astra, being front wheel drive (FWD), will offer much better control with better grip. 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, 2005 GMC Sierra (488 Nm) has 258 more torque (in Nm) than 2007 Opel Astra. (230 Nm). This means 2005 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2007 Opel Astra.
Compare all specifications:
| 2005 GMC Sierra | 2007 Opel Astra | |
| Make | GMC | Opel |
| Model | Sierra | Astra |
| Year Released | 2005 | 2007 |
| Body Type | Pickup | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 1598 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 300 HP | 178 HP |
| Torque | 488 Nm | 230 Nm |
| Engine Compression Ratio | 9.4:1 | 10.5:1 |
| Drive Type | Rear | Front |
| Number of Seats | 6 seats | 4 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 2788 kg | 1385 kg |
| Vehicle Length | 6270 mm | 4300 mm |
| Vehicle Width | 2450 mm | 1760 mm |
| Vehicle Height | 1940 mm | 1440 mm |
| Wheelbase Size | 4010 mm | 2620 mm |
| Fuel Tank Capacity | 129 L | 52 L |
