2008 BMW Z4 vs. 2013 Audi A6
To start off, 2013 Audi A6 is newer by 5 year(s). Which means there will be less support and parts availability for 2008 BMW Z4. In addition, the cost of maintenance, including insurance, on 2008 BMW Z4 would be higher. At 2,995 cc (6 cylinders), 2013 Audi A6 is equipped with a bigger engine. In terms of performance, 2013 Audi A6 (306 HP @ 5500 RPM) has 91 more horse power than 2008 BMW Z4. (215 HP @ 6500 RPM) In normal driving conditions, 2013 Audi A6 should accelerate faster than 2008 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2013 Audi A6 weights approximately 475 kg more than 2008 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2013 Audi A6 is all wheel drive (AWD), it will have significant more traction and grip than 2008 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2013 Audi A6 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, 2013 Audi A6 (441 Nm) has 191 more torque (in Nm) than 2008 BMW Z4. (250 Nm). This means 2013 Audi A6 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW Z4.
Compare all specifications:
| 2008 BMW Z4 | 2013 Audi A6 | |
| Make | BMW | Audi |
| Model | Z4 | A6 |
| Year Released | 2008 | 2013 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 2995 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | W |
| Valves per Cylinder | 4 valves | 6 valves |
| Horse Power | 215 HP | 306 HP |
| Engine RPM | 6500 RPM | 5500 RPM |
| Torque | 250 Nm | 441 Nm |
| Engine Bore Size | 82 mm | 84.5 mm |
| Engine Stroke Size | 78.8 mm | 89 mm |
| Engine Compression Ratio | 11.0:1 | 10.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 240 km/hour | 210 km/hour |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | CVT |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1360 kg | 1835 kg |
| Vehicle Length | 4100 mm | 4925 mm |
| Vehicle Width | 1790 mm | 2086 mm |
| Vehicle Height | 1310 mm | 1468 mm |
| Wheelbase Size | 2500 mm | 2912 mm |
