2008 BMW Z4 vs. 2013 Audi A7
To start off, 2013 Audi A7 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 A7 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2013 Audi A7 weights approximately 550 kg more than 2008 BMW Z4.
Because 2013 Audi A7 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 A7 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 A7 (441 Nm) has 191 more torque (in Nm) than 2008 BMW Z4. (250 Nm). This means 2013 Audi A7 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 A7 | |
| Make | BMW | Audi |
| Model | Z4 | A7 |
| Year Released | 2008 | 2013 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 2995 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | single |
| Valves per Cylinder | 4 valves | 6 valves |
| Horse Power | 0 HP | 306 HP |
| 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 | Gasoline - Premium |
| Top Speed | 240 km/hour | 250 km/hour |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | Single Speed |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1360 kg | 1910 kg |
| Vehicle Length | 4100 mm | 4969 mm |
| Vehicle Width | 1310 mm | 2139 mm |
| Vehicle Height | 1790 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2914 mm |
