2008 Audi S4 vs. 2005 BMW 748
To start off, 2008 Audi S4 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 BMW 748. In addition, the cost of maintenance, including insurance, on 2005 BMW 748 would be higher. At 4,799 cc (8 cylinders), 2005 BMW 748 is equipped with a bigger engine. In terms of performance, 2005 BMW 748 (362 HP @ 6000 RPM) has 22 more horse power than 2008 Audi S4. (340 HP @ 7000 RPM) In normal driving conditions, 2005 BMW 748 should accelerate faster than 2008 Audi S4. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 748 weights approximately 205 kg more than 2008 Audi S4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 BMW 748. In wet, icy, snow, or gravel driving conditions, 2008 Audi S4 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, 2005 BMW 748 (500 Nm @ 3400 RPM) has 90 more torque (in Nm) than 2008 Audi S4. (410 Nm @ 3500 RPM). This means 2005 BMW 748 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi S4.
Compare all specifications:
| 2008 Audi S4 | 2005 BMW 748 | |
| Make | Audi | BMW |
| Model | S4 | 748 |
| Year Released | 2008 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4161 cc | 4799 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 362 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 410 Nm | 500 Nm |
| Torque RPM | 3500 RPM | 3400 RPM |
| Engine Bore Size | 84.5 mm | 93 mm |
| Engine Stroke Size | 92.8 mm | 88.3 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1705 kg | 1910 kg |
| Vehicle Length | 4590 mm | 5040 mm |
| Vehicle Width | 1780 mm | 1910 mm |
| Vehicle Height | 1430 mm | 1500 mm |
| Wheelbase Size | 2650 mm | 3000 mm |
