2007 Audi A4 vs. 2009 BMW 523
To start off, 2009 BMW 523 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Audi A4. In addition, the cost of maintenance, including insurance, on 2007 Audi A4 would be higher. At 2,497 cc (6 cylinders), 2009 BMW 523 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (197 HP @ 5100 RPM) has 22 more horse power than 2009 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 2009 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 55 kg more than 2009 BMW 523. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 BMW 523 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 2009 BMW 523. However, in wet, icy, snow, or gravel driving conditions, 2007 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, 2007 Audi A4 (280 Nm @ 1800 RPM) has 50 more torque (in Nm) than 2009 BMW 523. (230 Nm @ 3500 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 523.
Compare all specifications:
| 2007 Audi A4 | 2009 BMW 523 | |
| Make | Audi | BMW |
| Model | A4 | 523 |
| Year Released | 2007 | 2009 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 2497 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 197 HP | 175 HP |
| Engine RPM | 5100 RPM | 5800 RPM |
| Torque | 280 Nm | 230 Nm |
| Torque RPM | 1800 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 78.8 mm |
| Engine Stroke Size | 92.8 mm | 82 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 238 km/hour | 230 km/hour |
| Acceleration 0-100mph | 8.2 seconds | 9 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1630 kg | 1575 kg |
| Vehicle Length | 4580 mm | 4850 mm |
| Vehicle Width | 1400 mm | 1850 mm |
| Vehicle Height | 1780 mm | 1470 mm |
| Wheelbase Size | 2660 mm | 2890 mm |
| Fuel Consumption Overall | 8.3 L/100km | 10.6 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
