2007 BMW X3 vs. 1999 Pontiac Firebird
To start off, 2007 BMW X3 is newer by 8 year(s). Which means there will be less support and parts availability for 1999 Pontiac Firebird. In addition, the cost of maintenance, including insurance, on 1999 Pontiac Firebird 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 52 more horse power than 2007 BMW X3. (148 HP) In normal driving conditions, 1999 Pontiac Firebird should accelerate faster than 2007 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X3 weights approximately 200 kg more than 1999 Pontiac Firebird.
Because 2007 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 1999 Pontiac Firebird. In wet, icy, snow, or gravel driving conditions, 2007 BMW X3 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 BMW X3 (330 Nm @ 2000 RPM) has 25 more torque (in Nm) than 1999 Pontiac Firebird. (305 Nm @ 4000 RPM). This means 2007 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 1999 Pontiac Firebird.
Compare all specifications:
| 2007 BMW X3 | 1999 Pontiac Firebird | |
| Make | BMW | Pontiac |
| Model | X3 | Firebird |
| Year Released | 2007 | 1999 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1994 cc | 3791 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 200 HP |
| Torque | 330 Nm | 305 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 96.5 mm |
| Engine Stroke Size | 90 mm | 86.4 mm |
| Engine Compression Ratio | 17.0:1 | 9.4:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1740 kg | 1540 kg |
| Vehicle Length | 4570 mm | 4920 mm |
| Vehicle Width | 1680 mm | 1900 mm |
| Vehicle Height | 1860 mm | 1320 mm |
| Wheelbase Size | 2800 mm | 2570 mm |
| Fuel Tank Capacity | 67 L | 76 L |
