2009 Audi A4 vs. 2008 BMW 540
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 540. In addition, the cost of maintenance, including insurance, on 2008 BMW 540 would be higher. At 4,398 cc, 2008 BMW 540 is equipped with a bigger engine. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 540 weights approximately 105 kg more than 2009 Audi A4.
Because 2009 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW 540. 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, 2008 BMW 540 (440 Nm @ 3600 RPM) has 215 more torque (in Nm) than 2009 Audi A4. (225 Nm @ 1950 RPM). This means 2008 BMW 540 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4. 2008 BMW 540 has automatic transmission and 2009 Audi A4 has manual transmission. 2009 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 BMW 540 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 2008 BMW 540 | |
| Make | Audi | BMW |
| Model | A4 | 540 |
| Year Released | 2009 | 2008 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1781 cc | 4398 cc |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 161 HP | 0 HP |
| Torque | 225 Nm | 440 Nm |
| Torque RPM | 1950 RPM | 3600 RPM |
| Engine Bore Size | 81.1 mm | 92 mm |
| Engine Stroke Size | 86.4 mm | 82.7 mm |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 9.5 seconds | 6.2 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1630 kg | 1735 kg |
| Vehicle Length | 4580 mm | 5050 mm |
| Vehicle Height | 1400 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2840 mm |
| Fuel Consumption Overall | 9.4 L/100km | 12.5 L/100km |
| Fuel Tank Capacity | 66 L | 70 L |
