2008 BMW X5 vs. 1991 Porsche 964
To start off, 2008 BMW X5 is newer by 17 year(s). Which means there will be less support and parts availability for 1991 Porsche 964. In addition, the cost of maintenance, including insurance, on 1991 Porsche 964 would be higher. At 4,398 cc, 2008 BMW X5 is equipped with a bigger engine. In terms of performance, 2008 BMW X5 (328 HP @ 6100 RPM) has 67 more horse power than 1991 Porsche 964. (261 HP @ 6100 RPM). In normal driving conditions, 2008 BMW X5 should accelerate faster than 1991 Porsche 964. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW X5 weights approximately 986 kg more than 1991 Porsche 964. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1991 Porsche 964 is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW X5. In wet, icy, snow, or gravel driving conditions, 1991 Porsche 964 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, 2008 BMW X5 (440 Nm @ 3700 RPM) has 122 more torque (in Nm) than 1991 Porsche 964. (318 Nm @ 4800 RPM). This means 2008 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1991 Porsche 964. 2008 BMW X5 has automatic transmission and 1991 Porsche 964 has manual transmission. 1991 Porsche 964 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW X5 | 1991 Porsche 964 | |
| Make | BMW | Porsche |
| Model | X5 | 964 |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Rear |
| Engine Size | 4398 cc | 3600 cc |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 328 HP | 261 HP |
| Engine RPM | 6100 RPM | 6100 RPM |
| Torque | 440 Nm | 318 Nm |
| Torque RPM | 3700 RPM | 4800 RPM |
| Engine Bore Size | 92 mm | 100.1 mm |
| Engine Stroke Size | 82.7 mm | 76.4 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Manual |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2191 kg | 1205 kg |
| Vehicle Length | 4870 mm | 4260 mm |
| Vehicle Height | 1480 mm | 1330 mm |
| Wheelbase Size | 2830 mm | 2280 mm |
| Fuel Tank Capacity | 85 L | 73 L |
