2009 Audi Q7 vs. 2007 BMW 550
To start off, 2009 Audi Q7 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW 550. In addition, the cost of maintenance, including insurance, on 2007 BMW 550 would be higher. At 4,799 cc (8 cylinders), 2007 BMW 550 is equipped with a bigger engine. In terms of performance, 2007 BMW 550 (362 HP @ 6300 RPM) has 133 more horse power than 2009 Audi Q7. (229 HP @ 4000 RPM) In normal driving conditions, 2007 BMW 550 should accelerate faster than 2009 Audi Q7. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi Q7 weights approximately 710 kg more than 2007 BMW 550.
Because 2009 Audi Q7 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW 550. In wet, icy, snow, or gravel driving conditions, 2009 Audi Q7 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, 2009 Audi Q7 (500 Nm @ 1750 RPM) has 10 more torque (in Nm) than 2007 BMW 550. (490 Nm @ 3400 RPM). This means 2009 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 550. 2009 Audi Q7 has automatic transmission and 2007 BMW 550 has manual transmission. 2007 BMW 550 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi Q7 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi Q7 | 2007 BMW 550 | |
| Make | Audi | BMW |
| Model | Q7 | 550 |
| Year Released | 2009 | 2007 |
| 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 | 229 HP | 362 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 500 Nm | 490 Nm |
| Torque RPM | 1750 RPM | 3400 RPM |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 9.1 seconds | 5.5 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 2370 kg | 1660 kg |
| Vehicle Length | 5090 mm | 4850 mm |
| Vehicle Width | 1990 mm | 1470 mm |
| Vehicle Height | 1740 mm | 1850 mm |
| Wheelbase Size | 3010 mm | 2890 mm |
| Fuel Consumption Overall | 10.5 L/100km | 10.8 L/100km |
| Fuel Tank Capacity | 100 L | 70 L |
