2009 Audi Q7 vs. 2008 BMW Z4
To start off, 2009 Audi Q7 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW Z4. In addition, the cost of maintenance, including insurance, on 2008 BMW Z4 would be higher. At 5,934 cc (12 cylinders), 2009 Audi Q7 is equipped with a bigger engine. In terms of performance, 2009 Audi Q7 (494 HP @ 3750 RPM) has 279 more horse power than 2008 BMW Z4. (215 HP @ 6500 RPM). In normal driving conditions, 2009 Audi Q7 should accelerate faster than 2008 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi Q7 weights approximately 1315 kg more than 2008 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi Q7 is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW Z4. 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 (1,000 Nm) has 750 more torque (in Nm) than 2008 BMW Z4. (250 Nm). This means 2009 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW Z4.
Compare all specifications:
| 2009 Audi Q7 | 2008 BMW Z4 | |
| Make | Audi | BMW |
| Model | Q7 | Z4 |
| Year Released | 2009 | 2008 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5934 cc | 2494 cc |
| Engine Cylinders | 12 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 494 HP | 215 HP |
| Engine RPM | 3750 RPM | 6500 RPM |
| Torque | 1000 Nm | 250 Nm |
| Engine Compression Ratio | 16.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 250 km/hour | 222 km/hour |
| Acceleration 0-100mph | 5.5 seconds | 7.5 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2605 kg | 1290 kg |
| Vehicle Length | 5070 mm | 4100 mm |
| Vehicle Width | 2010 mm | 1790 mm |
| Vehicle Height | 1700 mm | 1310 mm |
| Wheelbase Size | 3010 mm | 2500 mm |
| Fuel Consumption Overall | 11.3 L/100km | 9.5 L/100km |
| Fuel Tank Capacity | 100 L | 55 L |
