2002 Audi A6 vs. 2006 BMW 645
To start off, 2006 BMW 645 is newer by 4 year(s). Which means there will be less support and parts availability for 2002 Audi A6. In addition, the cost of maintenance, including insurance, on 2002 Audi A6 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 168 more horse power than 2002 Audi A6. (160 HP @ 4000 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 2002 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 132 kg more than 2002 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 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 2006 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2002 Audi A6, 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 140 more torque (in Nm) than 2002 Audi A6. (310 Nm @ 1400 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2002 Audi A6. 2006 BMW 645 has automatic transmission and 2002 Audi A6 has manual transmission. 2002 Audi A6 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2002 Audi A6 | 2006 BMW 645 | |
| Make | Audi | BMW |
| Model | A6 | 645 |
| Year Released | 2002 | 2006 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 160 HP | 328 HP |
| Engine RPM | 4000 RPM | 6100 RPM |
| Torque | 310 Nm | 450 Nm |
| Torque RPM | 1400 RPM | 3600 RPM |
| Engine Bore Size | 78.3 mm | 92 mm |
| Engine Stroke Size | 86.4 mm | 82.7 mm |
| Engine Compression Ratio | 19.5:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 222 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.6 seconds | 5.6 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1560 kg | 1692 kg |
| Vehicle Length | 4800 mm | 4830 mm |
| Vehicle Width | 1820 mm | 1860 mm |
| Vehicle Height | 1460 mm | 1380 mm |
| Wheelbase Size | 2770 mm | 2790 mm |
| Fuel Consumption Overall | 6.9 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
