2004 Audi A4 vs. 1979 BMW 633
To start off, 2004 Audi A4 is newer by 25 year(s). Which means there will be less support and parts availability for 1979 BMW 633. In addition, the cost of maintenance, including insurance, on 1979 BMW 633 would be higher. At 3,210 cc (6 cylinders), 1979 BMW 633 is equipped with a bigger engine. In terms of performance, 2004 Audi A4 (220 HP @ 6300 RPM) has 26 more horse power than 1979 BMW 633. (194 HP @ 5500 RPM). In normal driving conditions, 2004 Audi A4 should accelerate faster than 1979 BMW 633. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A4 weights approximately 240 kg more than 1979 BMW 633. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 1979 BMW 633. In wet, icy, snow, or gravel driving conditions, 2004 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, 2004 Audi A4 (300 Nm @ 3200 RPM) has 15 more torque (in Nm) than 1979 BMW 633. (285 Nm @ 4300 RPM). This means 2004 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1979 BMW 633.
Compare all specifications:
| 2004 Audi A4 | 1979 BMW 633 | |
| Make | Audi | BMW |
| Model | A4 | 633 |
| Year Released | 2004 | 1979 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2983 cc | 3210 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 220 HP | 194 HP |
| Engine RPM | 6300 RPM | 5500 RPM |
| Torque | 300 Nm | 285 Nm |
| Torque RPM | 3200 RPM | 4300 RPM |
| Engine Bore Size | 83 mm | 89 mm |
| Engine Stroke Size | 93 mm | 86 mm |
| Engine Compression Ratio | 10.1:1 | 9.3:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1710 kg | 1470 kg |
| Vehicle Length | 4550 mm | 4760 mm |
| Vehicle Width | 1780 mm | 1760 mm |
| Vehicle Height | 1430 mm | 1390 mm |
| Wheelbase Size | 2660 mm | 2640 mm |
| Fuel Tank Capacity | 63 L | 70 L |
