2005 Audi A6 vs. 2005 BMW 645
To start off, both 2005 Audi A6 and 2005 BMW 645 were released in the same year (2005). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,392 cc (8 cylinders), 2005 BMW 645 is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (326 HP @ 6100 RPM) has 198 more horse power than 2005 Audi A6. (128 HP @ 4000 RPM) In normal driving conditions, 2005 BMW 645 should accelerate faster than 2005 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 645 weights approximately 360 kg more than 2005 Audi A6. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 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 2005 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2005 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, 2005 BMW 645 (447 Nm @ 3600 RPM) has 162 more torque (in Nm) than 2005 Audi A6. (285 Nm @ 1750 RPM). This means 2005 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A6.
Compare all specifications:
| 2005 Audi A6 | 2005 BMW 645 | |
| Make | Audi | BMW |
| Model | A6 | 645 |
| Year Released | 2005 | 2005 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 4392 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 128 HP | 326 HP |
| Engine RPM | 4000 RPM | 6100 RPM |
| Torque | 285 Nm | 447 Nm |
| Torque RPM | 1750 RPM | 3600 RPM |
| Engine Bore Size | 79.6 mm | 92 mm |
| Engine Stroke Size | 95.5 mm | 83 mm |
| Engine Compression Ratio | 20.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 10.7 seconds | 6.1 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1535 kg | 1895 kg |
| Vehicle Length | 4800 mm | 4830 mm |
| Vehicle Width | 1820 mm | 1860 mm |
| Vehicle Height | 1460 mm | 1380 mm |
| Wheelbase Size | 2770 mm | 2890 mm |
| Fuel Consumption Overall | 5.7 L/100km | 12.8 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
