2009 Audi A4 vs. 2007 BMW 545
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 545. In addition, the cost of maintenance, including insurance, on 2007 BMW 545 would be higher. At 4,397 cc (8 cylinders), 2007 BMW 545 is equipped with a bigger engine. In terms of performance, 2007 BMW 545 (328 HP @ 6100 RPM) has 214 more horse power than 2009 Audi A4. (114 HP @ 4000 RPM) In normal driving conditions, 2007 BMW 545 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 545 weights approximately 545 kg more than 2009 Audi A4. 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 2007 BMW 545. 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, 2007 BMW 545 (450 Nm @ 3600 RPM) has 165 more torque (in Nm) than 2009 Audi A4. (285 Nm @ 1900 RPM). This means 2007 BMW 545 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2007 BMW 545 | |
| Make | Audi | BMW |
| Model | A4 | 545 |
| Year Released | 2009 | 2007 |
| Body Type | Station Wagon | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 1896 cc | 4397 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 114 HP | 328 HP |
| Engine RPM | 4000 RPM | 6100 RPM |
| Torque | 285 Nm | 450 Nm |
| Torque RPM | 1900 RPM | 3600 RPM |
| Engine Bore Size | 79.6 mm | 92 mm |
| Engine Stroke Size | 95.5 mm | 82.7 mm |
| Engine Compression Ratio | 19.0:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 10.6 seconds | 5.9 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 | 1430 kg | 1975 kg |
| Vehicle Length | 4550 mm | 4850 mm |
| Vehicle Width | 1780 mm | 1850 mm |
| Vehicle Height | 1430 mm | 1500 mm |
| Wheelbase Size | 2660 mm | 2840 mm |
| Fuel Consumption Overall | 6.1 L/100km | 11.3 L/100km |
| Fuel Tank Capacity | 70 L | 70 L |
