1999 Audi A4 vs. 1981 BMW 725
To start off, 1999 Audi A4 is newer by 18 year(s). Which means there will be less support and parts availability for 1981 BMW 725. In addition, the cost of maintenance, including insurance, on 1981 BMW 725 would be higher. At 2,493 cc (6 cylinders), 1981 BMW 725 is equipped with a bigger engine. In terms of performance, 1999 Audi A4 (247 HP @ 5700 RPM) has 99 more horse power than 1981 BMW 725. (148 HP @ 5500 RPM). In normal driving conditions, 1999 Audi A4 should accelerate faster than 1981 BMW 725.
Because 1999 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1981 BMW 725. In wet, icy, snow, or gravel driving conditions, 1999 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.
Compare all specifications:
| 1999 Audi A4 | 1981 BMW 725 | |
| Make | Audi | BMW |
| Model | A4 | 725 |
| Year Released | 1999 | 1981 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1780 cc | 2493 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 247 HP | 148 HP |
| Engine RPM | 5700 RPM | 5500 RPM |
| Engine Bore Size | 81 mm | 86 mm |
| Engine Stroke Size | 86.4 mm | 71.6 mm |
| Engine Compression Ratio | 9.5:1 | 9.6:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4480 mm | 4870 mm |
| Vehicle Width | 1740 mm | 1810 mm |
| Vehicle Height | 1420 mm | 1440 mm |
| Wheelbase Size | 2610 mm | 2810 mm |
