2009 Audi A4 vs. 2007 BMW Z4
To start off, 2009 Audi A4 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW Z4. In addition, the cost of maintenance, including insurance, on 2007 BMW Z4 would be higher. At 2,976 cc (6 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (217 HP @ 6300 RPM) has 28 more horse power than 2007 BMW Z4. (189 HP @ 6000 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 330 kg more than 2007 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 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 2007 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, 2009 Audi A4 (300 Nm @ 3200 RPM) has 55 more torque (in Nm) than 2007 BMW Z4. (245 Nm @ 3500 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4.
Compare all specifications:
| 2009 Audi A4 | 2007 BMW Z4 | |
| Make | Audi | BMW |
| Model | A4 | Z4 |
| Year Released | 2009 | 2007 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2976 cc | 2494 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 217 HP | 189 HP |
| Engine RPM | 6300 RPM | 6000 RPM |
| Torque | 300 Nm | 245 Nm |
| Torque RPM | 3200 RPM | 3500 RPM |
| Engine Bore Size | 82.6 mm | 84 mm |
| Engine Stroke Size | 92.8 mm | 75 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 7.8 seconds | 7 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1590 kg | 1260 kg |
| Vehicle Length | 4580 mm | 4100 mm |
| Vehicle Width | 1780 mm | 1790 mm |
| Vehicle Height | 1400 mm | 1310 mm |
| Wheelbase Size | 2660 mm | 2500 mm |
| Fuel Consumption Overall | 9.9 L/100km | 9.1 L/100km |
| Fuel Tank Capacity | 70 L | 55 L |
