2008 Audi S4 vs. 2006 BMW Z4
To start off, 2008 Audi S4 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 BMW Z4. In addition, the cost of maintenance, including insurance, on 2006 BMW Z4 would be higher. At 4,161 cc (8 cylinders), 2008 Audi S4 is equipped with a bigger engine. In terms of performance, 2008 Audi S4 (340 HP @ 7000 RPM) has 151 more horse power than 2006 BMW Z4. (189 HP @ 6000 RPM). In normal driving conditions, 2008 Audi S4 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 175 kg more than 2008 Audi S4.
Because 2008 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2008 Audi S4 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, 2008 Audi S4 (410 Nm @ 3500 RPM) has 165 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 2008 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2008 Audi S4 | 2006 BMW Z4 | |
| Make | Audi | BMW |
| Model | S4 | Z4 |
| Year Released | 2008 | 2006 |
| Body Type | Station Wagon | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 2492 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 189 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 410 Nm | 245 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1160 kg | 1335 kg |
| Vehicle Length | 4590 mm | 4100 mm |
| Vehicle Width | 1790 mm | 1790 mm |
| Vehicle Height | 1420 mm | 1310 mm |
| Wheelbase Size | 2660 mm | 2500 mm |
| Fuel Consumption Overall | 15.7 L/100km | 9 L/100km |
| Fuel Tank Capacity | 63 L | 55 L |
