2009 Audi S5 vs. 2008 Audi A8
To start off, 2009 Audi S5 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi A8. In addition, the cost of maintenance, including insurance, on 2008 Audi A8 would be higher. At 4,163 cc (8 cylinders), 2009 Audi S5 is equipped with a bigger engine. In terms of performance, 2009 Audi S5 (354 HP @ 6800 RPM) has 83 more horse power than 2008 Audi A8. (271 HP @ 3750 RPM). In normal driving conditions, 2009 Audi S5 should accelerate faster than 2008 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2008 Audi A8 weights approximately 174 kg more than 2009 Audi S5.
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, 2008 Audi A8 (650 Nm @ 1800 RPM) has 209 more torque (in Nm) than 2009 Audi S5. (441 Nm @ 3500 RPM). This means 2008 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi S5. 2008 Audi A8 has automatic transmission and 2009 Audi S5 has manual transmission. 2009 Audi S5 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
2009 Audi S5 | 2008 Audi A8 | |
Make | Audi | Audi |
Model | S5 | A8 |
Year Released | 2009 | 2008 |
Body Type | Coupe | Sedan |
Engine Position | Front | Front |
Engine Size | 4163 cc | 3936 cc |
Engine Cylinders | 8 cylinders | 8 cylinders |
Engine Type | V | V |
Valves per Cylinder | 4 valves | 4 valves |
Horse Power | 354 HP | 271 HP |
Engine RPM | 6800 RPM | 3750 RPM |
Torque | 441 Nm | 650 Nm |
Torque RPM | 3500 RPM | 1800 RPM |
Engine Bore Size | 84.5 mm | 81 mm |
Engine Stroke Size | 92.8 mm | 95.5 mm |
Engine Compression Ratio | 12.5:1 | 18.0:1 |
Fuel Type | Gasoline | Diesel |
Top Speed | 249 km/hour | 250 km/hour |
Drive Type | 4WD | 4WD |
Transmission Type | Manual | Automatic |
Number of Seats | 5 seats | 5 seats |
Number of Doors | 2 doors | 4 doors |
Vehicle Weight | 1770 kg | 1944 kg |
Vehicle Length | 4640 mm | 5190 mm |
Vehicle Width | 1990 mm | 1900 mm |
Vehicle Height | 1380 mm | 1460 mm |
Wheelbase Size | 2760 mm | 3080 mm |
Fuel Consumption Overall | 14.7 L/100km | 9.6 L/100km |
Fuel Tank Capacity | 63 L | 90 L |