1991 Opel Astra vs. 1992 Pontiac Firebird
To start off, 1992 Pontiac Firebird is newer by 1 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 3,128 cc (6 cylinders), 1992 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 1992 Pontiac Firebird (140 HP @ 4400 RPM) has 84 more horse power than 1991 Opel Astra. (56 HP @ 4600 RPM) In normal driving conditions, 1992 Pontiac Firebird should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1992 Pontiac Firebird weights approximately 375 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 1992 Pontiac Firebird 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 1992 Pontiac Firebird. However, in wet, icy, snow, or gravel driving conditions, 1991 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, 1992 Pontiac Firebird (244 Nm @ 3600 RPM) has 139 more torque (in Nm) than 1991 Opel Astra. (105 Nm @ 2400 RPM). This means 1992 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Astra.
Compare all specifications:
| 1991 Opel Astra | 1992 Pontiac Firebird | |
| Make | Opel | Pontiac |
| Model | Astra | Firebird |
| Year Released | 1991 | 1992 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1698 cc | 3128 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 56 HP | 140 HP |
| Engine RPM | 4600 RPM | 4400 RPM |
| Torque | 105 Nm | 244 Nm |
| Torque RPM | 2400 RPM | 3600 RPM |
| Engine Bore Size | 82.5 mm | 88.9 mm |
| Engine Stroke Size | 79.5 mm | 84 mm |
| Engine Compression Ratio | 23.0:1 | 8.5:1 |
| Top Speed | 150 km/hour | 175 km/hour |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1035 kg | 1410 kg |
| Vehicle Length | 4250 mm | 4790 mm |
| Vehicle Width | 1690 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1280 mm |
| Wheelbase Size | 2530 mm | 2570 mm |
| Fuel Tank Capacity | 52 L | 59 L |
