2005 GMC Sierra vs. 1991 Opel Astra
To start off, 2005 GMC Sierra is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Opel Astra. In addition, the cost of maintenance, including insurance, on 1991 Opel Astra 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 (321 HP @ 5000 RPM) has 265 more horse power than 1991 Opel Astra. (56 HP @ 4600 RPM). In normal driving conditions, 2005 GMC Sierra should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 1235 kg more than 1991 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 four wheel drive (4WD), it will have significant more traction and grip than 1991 Opel Astra. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 GMC Sierra (370 Nm @ 4000 RPM) has 265 more torque (in Nm) than 1991 Opel Astra. (105 Nm @ 2400 RPM). This means 2005 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Astra. 2005 GMC Sierra has automatic transmission and 1991 Opel Astra has manual transmission. 1991 Opel Astra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 GMC Sierra | 1991 Opel Astra | |
| Make | GMC | Opel |
| Model | Sierra | Astra |
| Year Released | 2005 | 1991 |
| Body Type | Pickup | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 1698 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 321 HP | 56 HP |
| Engine RPM | 5000 RPM | 4600 RPM |
| Torque | 370 Nm | 105 Nm |
| Torque RPM | 4000 RPM | 2400 RPM |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 2270 kg | 1035 kg |
| Vehicle Length | 5790 mm | 4250 mm |
| Vehicle Width | 2000 mm | 1690 mm |
| Vehicle Height | 1850 mm | 1430 mm |
| Wheelbase Size | 3650 mm | 2530 mm |
| Fuel Tank Capacity | 117 L | 52 L |
