2009 Audi A6 vs. 2007 BMW 745
To start off, 2009 Audi A6 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW 745. In addition, the cost of maintenance, including insurance, on 2007 BMW 745 would be higher. At 4,423 cc (8 cylinders), 2007 BMW 745 is equipped with a bigger engine. In terms of performance, 2009 Audi A6 (350 HP @ 6800 RPM) has 24 more horse power than 2007 BMW 745. (326 HP @ 3800 RPM). In normal driving conditions, 2009 Audi A6 should accelerate faster than 2007 BMW 745.
Because 2009 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 745. In wet, icy, snow, or gravel driving conditions, 2009 Audi A6 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, 2007 BMW 745 (700 Nm @ 1900 RPM) has 259 more torque (in Nm) than 2009 Audi A6. (441 Nm @ 3500 RPM). This means 2007 BMW 745 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A6.
Compare all specifications:
| 2009 Audi A6 | 2007 BMW 745 | |
| Make | Audi | BMW |
| Model | A6 | 745 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4423 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 350 HP | 326 HP |
| Engine RPM | 6800 RPM | 3800 RPM |
| Torque | 441 Nm | 700 Nm |
| Torque RPM | 3500 RPM | 1900 RPM |
| Engine Bore Size | 84.5 mm | 87 mm |
| Engine Stroke Size | 92.8 mm | 93 mm |
| Engine Compression Ratio | 12.5:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4930 mm | 5050 mm |
| Vehicle Width | 2040 mm | 1910 mm |
| Vehicle Height | 1460 mm | 1500 mm |
| Wheelbase Size | 2850 mm | 3000 mm |
| Fuel Consumption Overall | 13.2 L/100km | 9.5 L/100km |
| Fuel Tank Capacity | 80 L | 88 L |
