2004 BMW 645 vs. 2008 Porsche Cayenne
To start off, 2008 Porsche Cayenne is newer by 4 year(s). Which means there will be less support and parts availability for 2004 BMW 645. In addition, the cost of maintenance, including insurance, on 2004 BMW 645 would be higher. At 4,800 cc (8 cylinders), 2008 Porsche Cayenne is equipped with a bigger engine. In terms of performance, 2008 Porsche Cayenne (405 HP @ 6500 RPM) has 77 more horse power than 2004 BMW 645. (328 HP @ 6100 RPM) In normal driving conditions, 2008 Porsche Cayenne should accelerate faster than 2004 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2008 Porsche Cayenne weights approximately 535 kg more than 2004 BMW 645. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Porsche Cayenne is four wheel drive (4WD), it will have significant more traction and grip than 2004 BMW 645. In wet, icy, snow, or gravel driving conditions, 2008 Porsche Cayenne 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 Porsche Cayenne (678 Nm @ 3500 RPM) has 228 more torque (in Nm) than 2004 BMW 645. (450 Nm @ 3600 RPM). This means 2008 Porsche Cayenne will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW 645.
Compare all specifications:
| 2004 BMW 645 | 2008 Porsche Cayenne | |
| Make | BMW | Porsche |
| Model | 645 | Cayenne |
| Year Released | 2004 | 2008 |
| Body Type | Coupe | SUV |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 4800 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 328 HP | 405 HP |
| Engine RPM | 6100 RPM | 6500 RPM |
| Torque | 450 Nm | 678 Nm |
| Torque RPM | 3600 RPM | 3500 RPM |
| Engine Bore Size | 92 mm | 96 mm |
| Engine Stroke Size | 82.7 mm | 83 mm |
| Engine Compression Ratio | 10.0:1 | 12.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 253 km/hour |
| Acceleration 0-100mph | 5.6 seconds | 6.4 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1690 kg | 2225 kg |
| Vehicle Length | 4830 mm | 4790 mm |
| Vehicle Width | 1860 mm | 1930 mm |
| Vehicle Height | 1380 mm | 1710 mm |
| Wheelbase Size | 2830 mm | 2860 mm |
| Fuel Consumption Overall | 12 L/100km | 11.5 L/100km |
| Fuel Tank Capacity | 70 L | 100 L |
