2007 GMC Sierra vs. 2003 Opel Astra
To start off, 2007 GMC Sierra is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Opel Astra. In addition, the cost of maintenance, including insurance, on 2003 Opel Astra would be higher. At 5,998 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (345 HP @ 5200 RPM) has 197 more horse power than 2003 Opel Astra. (148 HP @ 5800 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 2003 Opel Astra.
Because 2007 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2003 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 (515 Nm @ 4000 RPM) has 312 more torque (in Nm) than 2003 Opel Astra. (203 Nm @ 4000 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Astra.
Compare all specifications:
| 2007 GMC Sierra | 2003 Opel Astra | |
| Make | GMC | Opel |
| Model | Sierra | Astra |
| Year Released | 2007 | 2003 |
| Body Type | Pickup | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5998 cc | 2198 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 345 HP | 148 HP |
| Engine RPM | 5200 RPM | 5800 RPM |
| Torque | 515 Nm | 203 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Bore Size | 102 mm | 86 mm |
| Engine Stroke Size | 92 mm | 94.6 mm |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5850 mm | 4260 mm |
| Vehicle Width | 2000 mm | 1720 mm |
| Vehicle Height | 1910 mm | 1430 mm |
| Wheelbase Size | 3650 mm | 2740 mm |
| Fuel Consumption Highway | 14 L/100km | 6.7 L/100km |
| Fuel Consumption City | 17 L/100km | 11.8 L/100km |
| Fuel Consumption Overall | 15.8 L/100km | 8.6 L/100km |
| Fuel Tank Capacity | 98 L | 52 L |
