2005 Audi A4 vs. 1977 BMW 728
To start off, 2005 Audi A4 is newer by 28 year(s). Which means there will be less support and parts availability for 1977 BMW 728. In addition, the cost of maintenance, including insurance, on 1977 BMW 728 would be higher. At 2,788 cc (6 cylinders), 1977 BMW 728 is equipped with a bigger engine. In terms of performance, 2005 Audi A4 (180 HP @ 5700 RPM) has 10 more horse power than 1977 BMW 728. (170 HP @ 6000 RPM). In normal driving conditions, 2005 Audi A4 should accelerate faster than 1977 BMW 728. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 728 weights approximately 61 kg more than 2005 Audi A4.
Because 2005 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1977 BMW 728. In wet, icy, snow, or gravel driving conditions, 2005 Audi A4 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, 2005 Audi A4 (240 Nm @ 1950 RPM) has 5 more torque (in Nm) than 1977 BMW 728. (235 Nm @ 3700 RPM). This means 2005 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1977 BMW 728.
Compare all specifications:
| 2005 Audi A4 | 1977 BMW 728 | |
| Make | Audi | BMW |
| Model | A4 | 728 |
| Year Released | 2005 | 1977 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 2788 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 180 HP | 170 HP |
| Engine RPM | 5700 RPM | 6000 RPM |
| Torque | 240 Nm | 235 Nm |
| Torque RPM | 1950 RPM | 3700 RPM |
| Engine Bore Size | 81 mm | 86 mm |
| Engine Stroke Size | 86.4 mm | 80 mm |
| Engine Compression Ratio | 9.3:1 | 9.0:1 |
| Top Speed | 234 km/hour | 193 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 | 1475 kg | 1536 kg |
| Vehicle Length | 4550 mm | 4870 mm |
| Vehicle Width | 1770 mm | 1810 mm |
| Vehicle Height | 1430 mm | 1440 mm |
| Wheelbase Size | 2660 mm | 2800 mm |
| Fuel Tank Capacity | 66 L | 85 L |
