2007 Audi A6 vs. 1981 BMW 745
To start off, 2007 Audi A6 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 22 more horse power than 2007 Audi A6. (230 HP @ 4000 RPM) In normal driving conditions, 1981 BMW 745 should accelerate faster than 2007 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A6 weights approximately 230 kg more than 1981 BMW 745.
Because 2007 Audi A6 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 Audi A6 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, 2007 Audi A6 (450 Nm @ 1400 RPM) has 70 more torque (in Nm) than 1981 BMW 745. (380 Nm @ 2200 RPM). This means 2007 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 745.
Compare all specifications:
| 2007 Audi A6 | 1981 BMW 745 | |
| Make | Audi | BMW |
| Model | A6 | 745 |
| Year Released | 2007 | 1981 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 3430 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 230 HP | 252 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 450 Nm | 380 Nm |
| Torque RPM | 1400 RPM | 2200 RPM |
| Engine Bore Size | 83 mm | 92 mm |
| Engine Stroke Size | 91.4 mm | 86 mm |
| Engine Compression Ratio | 17.0:1 | 8.0:1 |
| Top Speed | 247 km/hour | 220 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1820 kg | 1590 kg |
| Vehicle Length | 4920 mm | 4870 mm |
| Vehicle Width | 1860 mm | 1810 mm |
| Vehicle Height | 1470 mm | 1440 mm |
| Wheelbase Size | 2850 mm | 2800 mm |
| Fuel Tank Capacity | 80 L | 100 L |
