1981 BMW 745 vs. 2007 BMW 525
To start off, 2007 BMW 525 is newer by 26 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 3,430 cc (6 cylinders), 1981 BMW 745 is equipped with a bigger engine. In terms of performance, 1981 BMW 745 (252 HP @ 5200 RPM) has 37 more horse power than 2007 BMW 525. (215 HP @ 6500 RPM). In normal driving conditions, 1981 BMW 745 should accelerate faster than 2007 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 1981 BMW 745 weights approximately 310 kg more than 2007 BMW 525. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 BMW 525 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, 2007 BMW 525 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, 1981 BMW 745 (380 Nm @ 2200 RPM) has 129 more torque (in Nm) than 2007 BMW 525. (251 Nm @ 2750 RPM). This means 1981 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 525.
Compare all specifications:
| 1981 BMW 745 | 2007 BMW 525 | |
| Make | BMW | BMW |
| Model | 745 | 525 |
| Year Released | 1981 | 2007 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3430 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 252 HP | 215 HP |
| Engine RPM | 5200 RPM | 6500 RPM |
| Torque | 380 Nm | 251 Nm |
| Torque RPM | 2200 RPM | 2750 RPM |
| Engine Bore Size | 92 mm | 78.8 mm |
| Engine Stroke Size | 86 mm | 82 mm |
| Top Speed | 220 km/hour | 232 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 | 1280 kg |
| Vehicle Length | 4870 mm | 4850 mm |
| Vehicle Width | 1810 mm | 1850 mm |
| Vehicle Height | 1440 mm | 1500 mm |
| Wheelbase Size | 2800 mm | 2840 mm |
| Fuel Tank Capacity | 100 L | 70 L |
