1981 BMW 745 vs. 2004 Audi A6
To start off, 2004 Audi A6 is newer by 23 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 74 more horse power than 2004 Audi A6. (178 HP @ 4000 RPM). In normal driving conditions, 1981 BMW 745 should accelerate faster than 2004 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A6 weights approximately 140 kg more than 1981 BMW 745.
Because 2004 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, 2004 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, 1981 BMW 745 (380 Nm @ 2200 RPM) has 10 more torque (in Nm) than 2004 Audi A6. (370 Nm @ 1500 RPM). This means 1981 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A6. 2004 Audi A6 has automatic transmission and 1981 BMW 745 has manual transmission. 1981 BMW 745 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 Audi A6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1981 BMW 745 | 2004 Audi A6 | |
| Make | BMW | Audi |
| Model | 745 | A6 |
| Year Released | 1981 | 2004 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3430 cc | 2393 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 252 HP | 178 HP |
| Engine RPM | 5200 RPM | 4000 RPM |
| Torque | 380 Nm | 370 Nm |
| Torque RPM | 2200 RPM | 1500 RPM |
| Engine Bore Size | 92 mm | 78.3 mm |
| Engine Stroke Size | 86 mm | 86.4 mm |
| Engine Compression Ratio | 8.0:1 | 19.0:1 |
| Top Speed | 220 km/hour | 221 km/hour |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1590 kg | 1730 kg |
| Vehicle Length | 4870 mm | 4800 mm |
| Vehicle Width | 1810 mm | 1820 mm |
| Vehicle Height | 1440 mm | 1460 mm |
| Wheelbase Size | 2800 mm | 2890 mm |
| Fuel Tank Capacity | 100 L | 70 L |
