2009 Audi A4 vs. 2006 BMW Z4
To start off, 2009 Audi A4 is newer by 3 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 3,246 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (343 HP @ 7900 RPM) has 185 more horse power than 2009 Audi A4. (158 HP @ 4500 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW Z4 weights approximately 437 kg more than 2009 Audi A4. 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, 2009 Audi A4, 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 BMW Z4 (495 Nm @ 4900 RPM) has 245 more torque (in Nm) than 2009 Audi A4. (250 Nm @ 1500 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2006 BMW Z4 | |
| Make | Audi | BMW |
| Model | A4 | Z4 |
| Year Released | 2009 | 2006 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1798 cc | 3246 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 158 HP | 343 HP |
| Engine RPM | 4500 RPM | 7900 RPM |
| Torque | 250 Nm | 495 Nm |
| Torque RPM | 1500 RPM | 4900 RPM |
| Engine Compression Ratio | 9.6:1 | 11.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 225 km/hour | 249 km/hour |
| Acceleration 0-100mph | 8.6 seconds | 5 seconds |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 895 kg | 1332 kg |
| Vehicle Length | 4710 mm | 4100 mm |
| Vehicle Width | 2010 mm | 1790 mm |
| Vehicle Height | 1430 mm | 1300 mm |
| Wheelbase Size | 2810 mm | 2500 mm |
| Fuel Consumption Overall | 7.1 L/100km | 11.4 L/100km |
| Fuel Tank Capacity | 65 L | 60 L |
