2008 Audi S6 vs. 2006 BMW Z4
To start off, 2008 Audi S6 is newer by 2 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 4,172 cc (8 cylinders), 2008 Audi S6 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (338 HP @ 7900 RPM) has 3 more horse power than 2008 Audi S6. (335 HP @ 7000 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2008 Audi S6. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi S6 weights approximately 330 kg more than 2006 BMW Z4.
Because 2008 Audi S6 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, 2008 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, 2008 Audi S6 (420 Nm @ 3400 RPM) has 55 more torque (in Nm) than 2006 BMW Z4. (365 Nm @ 4900 RPM). This means 2008 Audi S6 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4. 2008 Audi S6 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. 2008 Audi S6 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Audi S6 | 2006 BMW Z4 | |
| Make | Audi | BMW |
| Model | S6 | Z4 |
| Year Released | 2008 | 2006 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4172 cc | 3246 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 335 HP | 338 HP |
| Engine RPM | 7000 RPM | 7900 RPM |
| Torque | 420 Nm | 365 Nm |
| Torque RPM | 3400 RPM | 4900 RPM |
| Engine Compression Ratio | 11.0:1 | 11.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 245 km/hour |
| Acceleration 0-100mph | 6.8 seconds | 5 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1815 kg | 1485 kg |
| Vehicle Length | 4840 mm | 4120 mm |
| Vehicle Width | 1860 mm | 1790 mm |
| Vehicle Height | 1450 mm | 1310 mm |
| Wheelbase Size | 2770 mm | 2500 mm |
| Fuel Consumption Overall | 14.5 L/100km | 12.1 L/100km |
| Fuel Tank Capacity | 82 L | 55 L |
