2007 BMW Z4 vs. 2009 Audi A3
To start off, 2009 Audi A3 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 3,187 cc (6 cylinders), 2009 Audi A3 is equipped with a bigger engine. In terms of performance, 2009 Audi A3 (247 HP @ 6300 RPM) has 32 more horse power than 2007 BMW Z4. (215 HP @ 6500 RPM) In normal driving conditions, 2009 Audi A3 should accelerate faster than 2007 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A3 weights approximately 248 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 2009 Audi A3 is four wheel drive (4WD), it will have significant more traction and grip than 2007 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2009 Audi A3 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, 2009 Audi A3 (320 Nm @ 2500 RPM) has 70 more torque (in Nm) than 2007 BMW Z4. (250 Nm @ 2750 RPM). This means 2009 Audi A3 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4. 2009 Audi A3 has automatic transmission and 2007 BMW Z4 has manual transmission. 2007 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi A3 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Z4 | 2009 Audi A3 | |
| Make | BMW | Audi |
| Model | Z4 | A3 |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 3187 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 247 HP |
| Engine RPM | 6500 RPM | 6300 RPM |
| Torque | 250 Nm | 320 Nm |
| Torque RPM | 2750 RPM | 2500 RPM |
| Engine Bore Size | 82 mm | 84 mm |
| Engine Stroke Size | 78.8 mm | 95.9 mm |
| Engine Compression Ratio | 11.0:1 | 11.3:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 240 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.5 seconds | 6.4 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1362 kg | 1610 kg |
| Vehicle Length | 4100 mm | 4290 mm |
| Vehicle Width | 1310 mm | 1770 mm |
| Vehicle Height | 1790 mm | 1430 mm |
| Wheelbase Size | 2500 mm | 2580 mm |
| Fuel Consumption Overall | 8.4 L/100km | 11.3 L/100km |
| Fuel Tank Capacity | 55 L | 60 L |
