2006 GMC Sierra vs. 2003 Opel Astra
To start off, 2006 GMC Sierra is newer by 3 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 5,358 cc (8 cylinders), 2006 GMC Sierra is equipped with a bigger engine. In terms of performance, 2006 GMC Sierra (295 HP @ 5200 RPM) has 172 more horse power than 2003 Opel Astra. (123 HP @ 5600 RPM). In normal driving conditions, 2006 GMC Sierra should accelerate faster than 2003 Opel Astra.
Let's talk about torque, 2006 GMC Sierra (454 Nm @ 4000 RPM) has 283 more torque (in Nm) than 2003 Opel Astra. (171 Nm @ 3800 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2003 Opel Astra.
Compare all specifications:
| 2006 GMC Sierra | 2003 Opel Astra | |
| Make | GMC | Opel |
| Model | Sierra | Astra |
| Year Released | 2006 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 5358 cc | 1796 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 295 HP | 123 HP |
| Engine RPM | 5200 RPM | 5600 RPM |
| Torque | 454 Nm | 171 Nm |
| Torque RPM | 4000 RPM | 3800 RPM |
| Engine Bore Size | 96 mm | 80.5 mm |
| Engine Stroke Size | 92 mm | 88.2 mm |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 5850 mm | 4260 mm |
| Vehicle Width | 2000 mm | 1760 mm |
| Vehicle Height | 1810 mm | 1470 mm |
| Wheelbase Size | 3650 mm | 2700 mm |
| Fuel Consumption Highway | 11.2 L/100km | 6.5 L/100km |
| Fuel Consumption City | 13.1 L/100km | 11.6 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 8.4 L/100km |
| Fuel Tank Capacity | 98 L | 52 L |
