2009 Audi S4 vs. 2008 BMW 525
To start off, 2009 Audi S4 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW 525. In addition, the cost of maintenance, including insurance, on 2008 BMW 525 would be higher. At 4,163 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 7000 RPM) has 125 more horse power than 2008 BMW 525. (215 HP @ 6500 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 2008 BMW 525. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 525 weights approximately 620 kg more than 2009 Audi S4.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear wheel drive vehicles. 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 S4 (410 Nm @ 3500 RPM) has 160 more torque (in Nm) than 2008 BMW 525. (250 Nm @ 2750 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 525.
Compare all specifications:
| 2009 Audi S4 | 2008 BMW 525 | |
| Make | Audi | BMW |
| Model | S4 | 525 |
| Year Released | 2009 | 2008 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 2497 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 215 HP |
| Engine RPM | 7000 RPM | 6500 RPM |
| Torque | 410 Nm | 250 Nm |
| Torque RPM | 3500 RPM | 2750 RPM |
| Engine Bore Size | 84.6 mm | 78.9 mm |
| Engine Stroke Size | 92.8 mm | 82 mm |
| Engine Compression Ratio | 18.0:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | 4WD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 930 kg | 1550 kg |
| Vehicle Length | 4580 mm | 4850 mm |
| Vehicle Width | 1780 mm | 1850 mm |
| Vehicle Height | 1400 mm | 1500 mm |
| Wheelbase Size | 2660 mm | 2840 mm |
| Fuel Consumption Overall | 15.7 L/100km | 9.9 L/100km |
| Fuel Tank Capacity | 63 L | 70 L |
