2006 Audi A8 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 A8. In addition, the cost of maintenance, including insurance, on 2006 Audi A8 would be higher. At 3,123 cc (6 cylinders), 2006 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 BMW Z4 (335 HP) has 79 more horse power than 2006 Audi A8. (256 HP) In normal driving conditions, 2009 BMW Z4 should accelerate faster than 2006 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW Z4 weights approximately 35 kg more than 2006 Audi A8. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 Audi A8 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 A8 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 A8 (330 Nm @ 3250 RPM) has 15 more torque (in Nm) than 2009 BMW Z4. (315 Nm @ 2750 RPM). This means 2006 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW Z4.
Compare all specifications:
| 2006 Audi A8 | 2009 BMW Z4 | |
| Make | Audi | BMW |
| Model | A8 | Z4 |
| Year Released | 2006 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3123 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 256 HP | 335 HP |
| Torque | 330 Nm | 315 Nm |
| Torque RPM | 3250 RPM | 2750 RPM |
| Engine Compression Ratio | 13.0:1 | 12.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 244 km/hour |
| Acceleration 0-100mph | 7.7 seconds | 6.2 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1275 kg | 1310 kg |
| Vehicle Length | 5060 mm | 4100 mm |
| Vehicle Width | 1900 mm | 1790 mm |
| Vehicle Height | 1450 mm | 1310 mm |
| Wheelbase Size | 2950 mm | 2500 mm |
| Fuel Consumption Overall | 11.2 L/100km | 9.7 L/100km |
| Fuel Tank Capacity | 90 L | 55 L |
