2007 GMC Sierra vs. 1998 Opel Astra
To start off, 2007 GMC Sierra is newer by 9 year(s). Which means there will be less support and parts availability for 1998 Opel Astra. In addition, the cost of maintenance, including insurance, on 1998 Opel Astra would be higher. At 5,999 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (312 HP @ 4400 RPM) has 238 more horse power than 1998 Opel Astra. (74 HP @ 4500 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1998 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 1265 kg more than 1998 Opel Astra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1998 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 (506 Nm @ 4400 RPM) has 339 more torque (in Nm) than 1998 Opel Astra. (167 Nm @ 1800 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1998 Opel Astra. 2007 GMC Sierra has automatic transmission and 1998 Opel Astra has manual transmission. 1998 Opel Astra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 GMC Sierra | 1998 Opel Astra | |
| Make | GMC | Opel |
| Model | Sierra | Astra |
| Year Released | 2007 | 1998 |
| Engine Position | Front | Front |
| Engine Size | 5999 cc | 1686 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 312 HP | 74 HP |
| Engine RPM | 4400 RPM | 4500 RPM |
| Torque | 506 Nm | 167 Nm |
| Torque RPM | 4400 RPM | 1800 RPM |
| Engine Bore Size | 102 mm | 80 mm |
| Engine Stroke Size | 92 mm | 86 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 2435 kg | 1170 kg |
| Vehicle Length | 6580 mm | 4060 mm |
| Vehicle Width | 2440 mm | 1700 mm |
| Vehicle Height | 1940 mm | 1420 mm |
| Wheelbase Size | 4250 mm | 2650 mm |
| Fuel Tank Capacity | 129 L | 53 L |
