2008 Audi A4 vs. 2009 BMW 550
To start off, 2009 BMW 550 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi A4. In addition, the cost of maintenance, including insurance, on 2008 Audi A4 would be higher. At 4,798 cc, 2009 BMW 550 is equipped with a bigger engine. In terms of performance, 2009 BMW 550 (362 HP @ 6300 RPM) has 183 more horse power than 2008 Audi A4. (179 HP @ 4000 RPM) In normal driving conditions, 2009 BMW 550 should accelerate faster than 2008 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 550 weights approximately 70 kg more than 2008 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2009 BMW 550. In wet, icy, snow, or gravel driving conditions, 2008 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 BMW 550 (490 Nm @ 3400 RPM) has 120 more torque (in Nm) than 2008 Audi A4. (370 Nm @ 1500 RPM). This means 2009 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4. 2009 BMW 550 has automatic transmission and 2008 Audi A4 has manual transmission. 2008 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW 550 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 Audi A4 | 2009 BMW 550 | |
| Make | Audi | BMW |
| Model | A4 | 550 |
| Year Released | 2008 | 2009 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 4798 cc |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 179 HP | 362 HP |
| Engine RPM | 4000 RPM | 6300 RPM |
| Torque | 370 Nm | 490 Nm |
| Torque RPM | 1500 RPM | 3400 RPM |
| Engine Bore Size | 78.3 mm | 93 mm |
| Engine Stroke Size | 86.4 mm | 88.3 mm |
| Engine Compression Ratio | 18.5:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline |
| Top Speed | 226 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.4 seconds | 5.9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1590 kg | 1660 kg |
| Vehicle Length | 4550 mm | 4850 mm |
| Vehicle Width | 1780 mm | 1470 mm |
| Vehicle Height | 1430 mm | 1850 mm |
| Wheelbase Size | 2660 mm | 2890 mm |
| Fuel Consumption Overall | 7.6 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 66 L | 70 L |
