2006 BMW X5 vs. 1991 Porsche 928
To start off, 2006 BMW X5 is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Porsche 928. In addition, the cost of maintenance, including insurance, on 1991 Porsche 928 would be higher. At 5,397 cc (8 cylinders), 1991 Porsche 928 is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (345 HP @ 5700 RPM) has 117 more horse power than 2006 BMW X5. (228 HP @ 3500 RPM) In normal driving conditions, 1991 Porsche 928 should accelerate faster than 2006 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 30 kg more than 1991 Porsche 928.
Because 2006 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Porsche 928. In wet, icy, snow, or gravel driving conditions, 2006 BMW X5 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, 1991 Porsche 928 (500 Nm @ 4250 RPM) has 200 more torque (in Nm) than 2006 BMW X5. (300 Nm @ 3500 RPM). This means 1991 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW X5.
Compare all specifications:
| 2006 BMW X5 | 1991 Porsche 928 | |
| Make | BMW | Porsche |
| Model | X5 | 928 |
| Year Released | 2006 | 1991 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 5397 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 228 HP | 345 HP |
| Engine RPM | 3500 RPM | 5700 RPM |
| Torque | 300 Nm | 500 Nm |
| Torque RPM | 3500 RPM | 4250 RPM |
| Engine Bore Size | 84 mm | 100.1 mm |
| Engine Stroke Size | 89.6 mm | 85.9 mm |
| Engine Compression Ratio | 10.2:1 | 10.4:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1630 kg | 1600 kg |
| Vehicle Length | 4670 mm | 4450 mm |
| Vehicle Width | 1880 mm | 1860 mm |
| Vehicle Height | 1720 mm | 1290 mm |
| Wheelbase Size | 2830 mm | 2510 mm |
| Fuel Tank Capacity | 93 L | 86 L |
