2009 Audi A8 vs. 2011 BMW Z4
To start off, 2011 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2009 Audi A8. In addition, the cost of maintenance, including insurance, on 2009 Audi A8 would be higher. At 5,204 cc (10 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (444 HP @ 7000 RPM) has 262 more horse power than 2011 BMW Z4. (182 HP @ 5000 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2011 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 460 kg more than 2011 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2011 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi A8 (540 Nm @ 3500 RPM) has 270 more torque (in Nm) than 2011 BMW Z4. (270 Nm @ 1250 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2011 BMW Z4. 2009 Audi A8 has automatic transmission and 2011 BMW Z4 has manual transmission. 2011 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A8 | 2011 BMW Z4 | |
| Make | Audi | BMW |
| Model | A8 | Z4 |
| Year Released | 2009 | 2011 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 1997 cc |
| Engine Cylinders | 10 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 444 HP | 182 HP |
| Engine RPM | 7000 RPM | 5000 RPM |
| Torque | 540 Nm | 270 Nm |
| Torque RPM | 3500 RPM | 1250 RPM |
| Engine Bore Size | 84.5 mm | 90.1 mm |
| Engine Stroke Size | 92.8 mm | 84 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 235 km/hour |
| Acceleration 0-100mph | 5.1 seconds | 6.9 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 | 1940 kg | 1480 kg |
| Vehicle Length | 5070 mm | 4239 mm |
| Vehicle Width | 1900 mm | 1791 mm |
| Vehicle Height | 1430 mm | 1290 mm |
| Wheelbase Size | 2950 mm | 2497 mm |
| Fuel Consumption Highway | 12.4 L/100km | 5.5 L/100km |
| Fuel Consumption City | 18.2 L/100km | 9.1 L/100km |
| Fuel Consumption Overall | 15.8 L/100km | 6.8 L/100km |
| Fuel Tank Capacity | 90 L | 55 L |
