2009 Audi A6 vs. 2007 BMW 650
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 650. In addition, the cost of maintenance, including insurance, on 2007 BMW 650 would be higher. At 4,799 cc (8 cylinders), 2007 BMW 650 is equipped with a bigger engine. In terms of performance, 2007 BMW 650 (363 HP @ 6300 RPM) has 142 more horse power than 2009 Audi A6. (221 HP @ 4000 RPM) In normal driving conditions, 2007 BMW 650 should accelerate faster than 2009 Audi A6. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A6 weights approximately 185 kg more than 2007 BMW 650.
Because 2009 Audi A6 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 650. 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 650 (490 Nm @ 3400 RPM) has 40 more torque (in Nm) than 2009 Audi A6. (450 Nm @ 1400 RPM). This means 2007 BMW 650 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A6. 2007 BMW 650 has automatic transmission and 2009 Audi A6 has manual transmission. 2009 Audi A6 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW 650 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A6 | 2007 BMW 650 | |
| Make | Audi | BMW |
| Model | A6 | 650 |
| Year Released | 2009 | 2007 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 4799 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 221 HP | 363 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 450 Nm | 490 Nm |
| Torque RPM | 1400 RPM | 3400 RPM |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 240 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.3 seconds | 5.4 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1825 kg | 1640 kg |
| Vehicle Length | 4940 mm | 4830 mm |
| Vehicle Width | 1860 mm | 1380 mm |
| Vehicle Height | 1470 mm | 1860 mm |
| Wheelbase Size | 2850 mm | 2790 mm |
| Fuel Tank Capacity | 80 L | 70 L |
