2006 Audi A4 vs. 2009 BMW 523
To start off, 2009 BMW 523 is newer by 3 year(s). Which means there will be less support and parts availability for 2006 Audi A4. In addition, the cost of maintenance, including insurance, on 2006 Audi A4 would be higher. At 2,967 cc (6 cylinders), 2006 Audi A4 is equipped with a bigger engine. In terms of performance, 2006 Audi A4 (230 HP @ 4000 RPM) has 55 more horse power than 2009 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 2006 Audi A4 should accelerate faster than 2009 BMW 523.
Because 2006 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 523. In wet, icy, snow, or gravel driving conditions, 2006 Audi A4 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, 2006 Audi A4 (451 Nm @ 1400 RPM) has 221 more torque (in Nm) than 2009 BMW 523. (230 Nm @ 3500 RPM). This means 2006 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 523.
Compare all specifications:
| 2006 Audi A4 | 2009 BMW 523 | |
| Make | Audi | BMW |
| Model | A4 | 523 |
| Year Released | 2006 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 230 HP | 175 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 451 Nm | 230 Nm |
| Torque RPM | 1400 RPM | 3500 RPM |
| Engine Bore Size | 83 mm | 82 mm |
| Engine Stroke Size | 91.4 mm | 78.8 mm |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 7.3 seconds | 9.6 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Length | 4580 mm | 4850 mm |
| Vehicle Width | 1780 mm | 1470 mm |
| Vehicle Height | 1400 mm | 1850 mm |
| Wheelbase Size | 2660 mm | 2890 mm |
| Fuel Consumption Overall | 8 L/100km | 9.3 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
