2009 Audi RS6 vs. 2006 BMW Z4
To start off, 2009 Audi RS6 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 BMW Z4. In addition, the cost of maintenance, including insurance, on 2006 BMW Z4 would be higher. At 4,991 cc (10 cylinders), 2009 Audi RS6 is equipped with a bigger engine. In terms of performance, 2009 Audi RS6 (572 HP @ 6250 RPM) has 387 more horse power than 2006 BMW Z4. (185 HP @ 6000 RPM). In normal driving conditions, 2009 Audi RS6 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi RS6 weights approximately 698 kg more than 2006 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2009 Audi RS6 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 RS6 (650 Nm @ 1500 RPM) has 413 more torque (in Nm) than 2006 BMW Z4. (237 Nm @ 3500 RPM). This means 2009 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4. 2009 Audi RS6 has automatic transmission and 2006 BMW Z4 has manual transmission. 2006 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi RS6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi RS6 | 2006 BMW Z4 | |
| Make | Audi | BMW |
| Model | RS6 | Z4 |
| Year Released | 2009 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4991 cc | 2501 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 572 HP | 185 HP |
| Engine RPM | 6250 RPM | 6000 RPM |
| Torque | 650 Nm | 237 Nm |
| Torque RPM | 1500 RPM | 3500 RPM |
| Engine Bore Size | 84.5 mm | 84.1 mm |
| Engine Stroke Size | 89 mm | 74.9 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 220 km/hour |
| Acceleration 0-100mph | 4.6 seconds | 7 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2028 kg | 1330 kg |
| Vehicle Length | 4930 mm | 4100 mm |
| Vehicle Width | 1900 mm | 1790 mm |
| Vehicle Height | 1460 mm | 1300 mm |
| Wheelbase Size | 2850 mm | 2500 mm |
| Fuel Consumption Overall | 6.8 L/100km | 9 L/100km |
| Fuel Tank Capacity | 80 L | 55 L |
