2005 Alpina B7 vs. 1981 BMW 745
To start off, 2005 Alpina B7 is newer by 24 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 4,398 cc (8 cylinders), 2005 Alpina B7 is equipped with a bigger engine. In terms of performance, 2005 Alpina B7 (492 HP @ 5500 RPM) has 240 more horse power than 1981 BMW 745. (252 HP @ 5200 RPM). In normal driving conditions, 2005 Alpina B7 should accelerate faster than 1981 BMW 745. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alpina B7 weights approximately 354 kg more than 1981 BMW 745. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2005 Alpina B7 (700 Nm @ 4250 RPM) has 320 more torque (in Nm) than 1981 BMW 745. (380 Nm @ 2200 RPM). This means 2005 Alpina B7 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 745.
Compare all specifications:
2005 Alpina B7 | 1981 BMW 745 | |
Make | Alpina | BMW |
Model | B7 | 745 |
Year Released | 2005 | 1981 |
Body Type | Sedan | Sedan |
Engine Position | Front | Front |
Engine Size | 4398 cc | 3430 cc |
Engine Cylinders | 8 cylinders | 6 cylinders |
Engine Type | V | in-line |
Horse Power | 492 HP | 252 HP |
Engine RPM | 5500 RPM | 5200 RPM |
Torque | 700 Nm | 380 Nm |
Torque RPM | 4250 RPM | 2200 RPM |
Engine Bore Size | 92 mm | 92 mm |
Engine Stroke Size | 82.7 mm | 86 mm |
Engine Compression Ratio | 9.0:1 | 8.0:1 |
Top Speed | 300 km/hour | 227 km/hour |
Drive Type | Rear | Rear |
Transmission Type | Automatic | Automatic |
Number of Seats | 5 seats | 5 seats |
Number of Doors | 4 doors | 4 doors |
Vehicle Weight | 1950 kg | 1596 kg |
Vehicle Length | 5040 mm | 4870 mm |
Vehicle Width | 1910 mm | 1810 mm |
Vehicle Height | 1480 mm | 1440 mm |
Wheelbase Size | 3000 mm | 2770 mm |
Fuel Tank Capacity | 88 L | 100 L |