1984 Audi 4000 vs. 2003 BMW 645
To start off, 2003 BMW 645 is newer by 19 year(s). Which means there will be less support and parts availability for 1984 Audi 4000. In addition, the cost of maintenance, including insurance, on 1984 Audi 4000 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (310 HP @ 6000 RPM) has 210 more horse power than 1984 Audi 4000. (100 HP @ 4250 RPM) In normal driving conditions, 2003 BMW 645 should accelerate faster than 1984 Audi 4000.
Because 1984 Audi 4000 is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW 645. In wet, icy, snow, or gravel driving conditions, 1984 Audi 4000 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, 2003 BMW 645 (450 Nm) has 313 more torque (in Nm) than 1984 Audi 4000. (137 Nm). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1984 Audi 4000.
Compare all specifications:
| 1984 Audi 4000 | 2003 BMW 645 | |
| Make | Audi | BMW |
| Model | 4000 | 645 |
| Year Released | 1984 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2144 cc | 4398 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 100 HP | 310 HP |
| Engine RPM | 4250 RPM | 6000 RPM |
| Torque | 137 Nm | 450 Nm |
| Engine Bore Size | 79.2 mm | 92 mm |
| Engine Stroke Size | 86.4 mm | 82.7 mm |
| Top Speed | 168 km/hour | 250 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Length | 4490 mm | 4830 mm |
| Vehicle Width | 1690 mm | 1860 mm |
| Vehicle Height | 1370 mm | 1380 mm |
| Wheelbase Size | 2550 mm | 2790 mm |
