1986 Audi 100 vs. 2004 BMW 645
To start off, 2004 BMW 645 is newer by 18 year(s). Which means there will be less support and parts availability for 1986 Audi 100. In addition, the cost of maintenance, including insurance, on 1986 Audi 100 would be higher. At 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 243 more horse power than 1986 Audi 100. (85 HP @ 5600 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 1986 Audi 100. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 580 kg more than 1986 Audi 100. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2004 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1986 Audi 100, being front wheel drive (FWD), will offer much better control with better grip. 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 BMW 645 (450 Nm @ 3600 RPM) has 328 more torque (in Nm) than 1986 Audi 100. (122 Nm @ 3200 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1986 Audi 100. 2004 BMW 645 has automatic transmission and 1986 Audi 100 has manual transmission. 1986 Audi 100 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1986 Audi 100 | 2004 BMW 645 | |
| Make | Audi | BMW |
| Model | 100 | 645 |
| Year Released | 1986 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 1588 cc | 4398 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 85 HP | 328 HP |
| Engine RPM | 5600 RPM | 6100 RPM |
| Torque | 122 Nm | 450 Nm |
| Torque RPM | 3200 RPM | 3600 RPM |
| Engine Bore Size | 79.5 mm | 92 mm |
| Engine Stroke Size | 80 mm | 82.7 mm |
| Engine Compression Ratio | 8.2:1 | 10.0:1 |
| Top Speed | 160 km/hour | 250 km/hour |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1110 kg | 1690 kg |
| Vehicle Length | 4620 mm | 4830 mm |
| Vehicle Width | 1780 mm | 1860 mm |
| Vehicle Height | 1400 mm | 1380 mm |
| Wheelbase Size | 2690 mm | 2830 mm |
| Fuel Tank Capacity | 60 L | 70 L |
