1991 Opel Astra vs. 1999 Pontiac Firebird
To start off, 1999 Pontiac Firebird is newer by 8 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 3,791 cc (6 cylinders), 1999 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 1999 Pontiac Firebird (200 HP) has 144 more horse power than 1991 Opel Astra. (56 HP) In normal driving conditions, 1999 Pontiac Firebird should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 1999 Pontiac Firebird weights approximately 515 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 1999 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 1999 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, 1999 Pontiac Firebird (305 Nm @ 4000 RPM) has 200 more torque (in Nm) than 1991 Opel Astra. (105 Nm @ 2400 RPM). This means 1999 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 | 1999 Pontiac Firebird | |
| Make | Opel | Pontiac |
| Model | Astra | Firebird |
| Year Released | 1991 | 1999 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1700 cc | 3791 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 56 HP | 200 HP |
| Torque | 105 Nm | 305 Nm |
| Torque RPM | 2400 RPM | 4000 RPM |
| Engine Bore Size | 82.5 mm | 96.5 mm |
| Engine Stroke Size | 79.5 mm | 86.4 mm |
| Engine Compression Ratio | 23.0:1 | 9.4:1 |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1025 kg | 1540 kg |
| Vehicle Length | 4280 mm | 4920 mm |
| Vehicle Width | 1690 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1320 mm |
| Wheelbase Size | 2640 mm | 2570 mm |
| Fuel Tank Capacity | 75 L | 76 L |
