2006 Audi S4 vs. 2005 BMW 730
To start off, 2006 Audi S4 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 BMW 730. In addition, the cost of maintenance, including insurance, on 2005 BMW 730 would be higher. At 4,162 cc (8 cylinders), 2006 Audi S4 is equipped with a bigger engine. In terms of performance, 2006 Audi S4 (339 HP @ 7000 RPM) has 114 more horse power than 2005 BMW 730. (225 HP @ 4000 RPM). In normal driving conditions, 2006 Audi S4 should accelerate faster than 2005 BMW 730. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 730 weights approximately 700 kg more than 2006 Audi S4.
Because 2006 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 BMW 730. In wet, icy, snow, or gravel driving conditions, 2006 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 730 (500 Nm @ 2000 RPM) has 90 more torque (in Nm) than 2006 Audi S4. (410 Nm @ 3500 RPM). This means 2005 BMW 730 will have an easier job in driving up hills or pulling heavy equipment than 2006 Audi S4. 2005 BMW 730 has automatic transmission and 2006 Audi S4 has manual transmission. 2006 Audi S4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW 730 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Audi S4 | 2005 BMW 730 | |
| Make | Audi | BMW |
| Model | S4 | 730 |
| Year Released | 2006 | 2005 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4162 cc | 2979 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 339 HP | 225 HP |
| Engine RPM | 7000 RPM | 4000 RPM |
| Torque | 410 Nm | 500 Nm |
| Torque RPM | 3500 RPM | 2000 RPM |
| Engine Bore Size | 84.5 mm | 84.1 mm |
| Engine Stroke Size | 92.8 mm | 90 mm |
| Engine Compression Ratio | 11.0:1 | 18.0:1 |
| Fuel Type | Gasoline | Diesel |
| Acceleration 0-100mph | 5.9 seconds | 8 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1275 kg | 1975 kg |
| Vehicle Length | 4590 mm | 5050 mm |
| Vehicle Width | 1730 mm | 1910 mm |
| Vehicle Height | 1430 mm | 1500 mm |
| Wheelbase Size | 2650 mm | 2890 mm |
| Fuel Consumption Overall | 12.3 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 63 L | 88 L |
