2006 Audi S6 vs. 2009 BMW Z4
To start off, 2009 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Audi S6. In addition, the cost of maintenance, including insurance, on 2006 Audi S6 would be higher. At 5,204 cc (10 cylinders), 2006 Audi S6 is equipped with a bigger engine. In terms of performance, 2006 Audi S6 (420 HP @ 6800 RPM) has 159 more horse power than 2009 BMW Z4. (261 HP @ 6600 RPM). In normal driving conditions, 2006 Audi S6 should accelerate faster than 2009 BMW Z4.
Because 2006 Audi S6 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2006 Audi S6 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, 2006 Audi S6 (732 Nm @ 3000 RPM) has 417 more torque (in Nm) than 2009 BMW Z4. (315 Nm @ 2750 RPM). This means 2006 Audi S6 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW Z4. 2006 Audi S6 has automatic transmission and 2009 BMW Z4 has manual transmission. 2009 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Audi S6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Audi S6 | 2009 BMW Z4 | |
| Make | Audi | BMW |
| Model | S6 | Z4 |
| Year Released | 2006 | 2009 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 2996 cc |
| Engine Cylinders | 10 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 420 HP | 261 HP |
| Engine RPM | 6800 RPM | 6600 RPM |
| Torque | 732 Nm | 315 Nm |
| Torque RPM | 3000 RPM | 2750 RPM |
| Engine Compression Ratio | 12.5:1 | 10.7:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Width | 1870 mm | 1790 mm |
