2008 BMW Z4 vs. 2013 Audi A8
To start off, 2013 Audi A8 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 3,246 cc (6 cylinders), 2008 BMW Z4 is equipped with a bigger engine. In terms of performance, 2008 BMW Z4 (338 HP) has 10 more horse power than 2013 Audi A8. (328 HP). In normal driving conditions, 2008 BMW Z4 should accelerate faster than 2013 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2013 Audi A8 weights approximately 335 kg more than 2008 BMW Z4.
Because 2013 Audi A8 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 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, 2013 Audi A8 (441 Nm) has 76 more torque (in Nm) than 2008 BMW Z4. (365 Nm). This means 2013 Audi A8 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 A8 | |
| Make | BMW | Audi |
| Model | Z4 | A8 |
| Year Released | 2008 | 2013 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 3000 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | W |
| Valves per Cylinder | 4 valves | 6 valves |
| Horse Power | 338 HP | 328 HP |
| Torque | 365 Nm | 441 Nm |
| Engine Bore Size | 87 mm | 84.5 mm |
| Engine Stroke Size | 91 mm | 89.5 mm |
| Engine Compression Ratio | 11.5:1 | 10.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 250 km/hour | 250 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 | 1495 kg | 1830 kg |
| Vehicle Length | 4870 mm | 5137 mm |
| Vehicle Width | 1790 mm | 2111 mm |
| Vehicle Height | 1470 mm | 1460 mm |
| Wheelbase Size | 2500 mm | 2992 mm |
