2009 Audi A4 vs. 2008 BMW 523
To start off, 2009 Audi A4 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW 523. In addition, the cost of maintenance, including insurance, on 2008 BMW 523 would be higher. At 2,975 cc (6 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (217 HP @ 6300 RPM) has 42 more horse power than 2008 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 2008 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 120 kg more than 2008 BMW 523. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW 523. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi A4 (300 Nm @ 3200 RPM) has 70 more torque (in Nm) than 2008 BMW 523. (230 Nm @ 3500 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 523.
Compare all specifications:
| 2009 Audi A4 | 2008 BMW 523 | |
| Make | Audi | BMW |
| Model | A4 | 523 |
| Year Released | 2009 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 2975 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 217 HP | 175 HP |
| Engine RPM | 6300 RPM | 5800 RPM |
| Torque | 300 Nm | 230 Nm |
| Torque RPM | 3200 RPM | 3500 RPM |
| Engine Bore Size | 82.5 mm | 82.1 mm |
| Engine Stroke Size | 92.8 mm | 78.8 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 8.9 seconds | 8.5 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 1610 kg | 1490 kg |
| Vehicle Length | 4550 mm | 4870 mm |
| Vehicle Height | 1430 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2890 mm |
| Fuel Consumption Overall | 10.9 L/100km | 8.5 L/100km |
| Fuel Tank Capacity | 66 L | 70 L |
