2009 Audi A8 vs. 2009 Audi R8
To start off, both 2009 Audi A8 and 2009 Audi R8 were released in the same year (2009). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,163 cc (8 cylinders), 2009 Audi R8 is equipped with a bigger engine. In terms of performance, 2009 Audi R8 (414 HP @ 7800 RPM) has 142 more horse power than 2009 Audi A8. (272 HP @ 3750 RPM) In normal driving conditions, 2009 Audi R8 should accelerate faster than 2009 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 375 kg more than 2009 Audi R8.
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 A8 (650 Nm @ 1800 RPM) has 220 more torque (in Nm) than 2009 Audi R8. (430 Nm @ 4500 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi R8.
Compare all specifications:
| 2009 Audi A8 | 2009 Audi R8 | |
| Make | Audi | Audi |
| Model | A8 | R8 |
| Year Released | 2009 | 2009 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 3936 cc | 4163 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 272 HP | 414 HP |
| Engine RPM | 3750 RPM | 7800 RPM |
| Torque | 650 Nm | 430 Nm |
| Torque RPM | 1800 RPM | 4500 RPM |
| Engine Bore Size | 81 mm | 84.5 mm |
| Engine Stroke Size | 95.5 mm | 92.8 mm |
| Engine Compression Ratio | 18.0:1 | 12.5:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 250 km/hour | 301 km/hour |
| Acceleration 0-100mph | 6.8 seconds | 4.6 seconds |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1940 kg | 1565 kg |
| Vehicle Length | 5190 mm | 4440 mm |
| Vehicle Width | 1900 mm | 1910 mm |
| Vehicle Height | 1460 mm | 1260 mm |
| Wheelbase Size | 3080 mm | 2660 mm |
| Fuel Consumption Overall | 9.6 L/100km | 13.8 L/100km |
| Fuel Tank Capacity | 90 L | 75 L |
