2009 Audi S8 vs. 2007 BMW 318
To start off, 2009 Audi S8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW 318. In addition, the cost of maintenance, including insurance, on 2007 BMW 318 would be higher. At 5,204 cc (10 cylinders), 2009 Audi S8 is equipped with a bigger engine. In terms of performance, 2009 Audi S8 (450 HP @ 7000 RPM) has 322 more horse power than 2007 BMW 318. (128 HP @ 5750 RPM). In normal driving conditions, 2009 Audi S8 should accelerate faster than 2007 BMW 318. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 318 weights approximately 260 kg more than 2009 Audi S8.
Because 2009 Audi S8 is all wheel drive (AWD), it will have significant more traction and grip than 2007 BMW 318. In wet, icy, snow, or gravel driving conditions, 2009 Audi S8 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 Audi S8 (540 Nm @ 3500 RPM) has 360 more torque (in Nm) than 2007 BMW 318. (180 Nm @ 3250 RPM). This means 2009 Audi S8 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 318. 2009 Audi S8 has automatic transmission and 2007 BMW 318 has manual transmission. 2007 BMW 318 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 Audi S8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi S8 | 2007 BMW 318 | |
| Make | Audi | BMW |
| Model | S8 | 318 |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5204 cc | 1995 cc |
| Engine Cylinders | 10 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 450 HP | 128 HP |
| Engine RPM | 7000 RPM | 5750 RPM |
| Torque | 540 Nm | 180 Nm |
| Torque RPM | 3500 RPM | 3250 RPM |
| Engine Compression Ratio | 12.5:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 5.1 seconds | 10 seconds |
| Drive Type | AWD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1175 kg | 1435 kg |
| Vehicle Length | 5070 mm | 4230 mm |
| Vehicle Width | 1900 mm | 1820 mm |
| Vehicle Height | 1430 mm | 1430 mm |
| Wheelbase Size | 2950 mm | 2770 mm |
| Fuel Consumption Overall | 15.8 L/100km | 7.3 L/100km |
| Fuel Tank Capacity | 90 L | 63 L |
