1981 BMW 745 vs. 2009 Porsche Cayenne
To start off, 2009 Porsche Cayenne is newer by 28 year(s). Which means there will be less support and parts availability for 1981 BMW 745. In addition, the cost of maintenance, including insurance, on 1981 BMW 745 would be higher. At 4,806 cc (8 cylinders), 2009 Porsche Cayenne is equipped with a bigger engine. In terms of performance, 2009 Porsche Cayenne (380 HP @ 6200 RPM) has 128 more horse power than 1981 BMW 745. (252 HP @ 5200 RPM) In normal driving conditions, 2009 Porsche Cayenne should accelerate faster than 1981 BMW 745. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 745 weights approximately 240 kg more than 2009 Porsche Cayenne.
Because 2009 Porsche Cayenne is four wheel drive (4WD), it will have significant more traction and grip than 1981 BMW 745. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Porsche Cayenne (500 Nm @ 3500 RPM) has 120 more torque (in Nm) than 1981 BMW 745. (380 Nm @ 2200 RPM). This means 2009 Porsche Cayenne will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 745.
Compare all specifications:
| 1981 BMW 745 | 2009 Porsche Cayenne | |
| Make | BMW | Porsche |
| Model | 745 | Cayenne |
| Year Released | 1981 | 2009 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 3430 cc | 4806 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 252 HP | 380 HP |
| Engine RPM | 5200 RPM | 6200 RPM |
| Torque | 380 Nm | 500 Nm |
| Torque RPM | 2200 RPM | 3500 RPM |
| Engine Bore Size | 92 mm | 96 mm |
| Engine Stroke Size | 86 mm | 83 mm |
| Engine Compression Ratio | 8.0:1 | 12.5:1 |
| Top Speed | 220 km/hour | 252 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1590 kg | 1350 kg |
| Vehicle Length | 4870 mm | 4800 mm |
| Vehicle Width | 1810 mm | 1710 mm |
| Vehicle Height | 1440 mm | 1930 mm |
| Wheelbase Size | 2800 mm | 2860 mm |
| Fuel Tank Capacity | 100 L | 100 L |
