2006 Audi S4 vs. 2006 BMW Z4
To start off, both 2006 Audi S4 and 2006 BMW Z4 were released in the same year (2006). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,163 cc (8 cylinders), 2006 Audi S4 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (340 HP @ 7000 RPM) has 151 more horse power than 2006 BMW Z4. (189 HP @ 6000 RPM). In normal driving conditions, 2006 Audi S4 should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2006 Audi S4 weights approximately 195 kg more than 2006 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW Z4 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2006 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2006 Audi S4, being front wheel drive (FWD), will offer much better control with better grip. 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, 2006 Audi S4 (410 Nm @ 3500 RPM) has 165 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 2006 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 Audi S4 | 2006 BMW Z4 | |
| Make | Audi | BMW |
| Model | S4 | Z4 |
| Year Released | 2006 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4163 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 |
| Engine Bore Size | 84.6 mm | 84 mm |
| Engine Stroke Size | 93 mm | 75 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1530 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 | 13.8 L/100km | 9 L/100km |
| Fuel Tank Capacity | 63 L | 55 L |
