2009 Audi R8 vs. 2009 Audi A4
To start off, both 2009 Audi R8 and 2009 Audi A4 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 (420 HP @ 7800 RPM) has 242 more horse power than 2009 Audi A4. (178 HP @ 4000 RPM). In normal driving conditions, 2009 Audi R8 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 695 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 R8 (430 Nm @ 4500 RPM) has 60 more torque (in Nm) than 2009 Audi A4. (370 Nm @ 1500 RPM). This means 2009 Audi R8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi R8 | 2009 Audi A4 | |
| Make | Audi | Audi |
| Model | R8 | A4 |
| Year Released | 2009 | 2009 |
| Body Type | Coupe | Sedan |
| Engine Position | Middle | Front |
| Engine Size | 4163 cc | 2496 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 420 HP | 178 HP |
| Engine RPM | 7800 RPM | 4000 RPM |
| Torque | 430 Nm | 370 Nm |
| Torque RPM | 4500 RPM | 1500 RPM |
| Engine Compression Ratio | 12.5:1 | 18.5:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | AWD | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 895 kg | 1590 kg |
| Vehicle Length | 4440 mm | 4550 mm |
| Vehicle Width | 1910 mm | 1780 mm |
| Vehicle Height | 1260 mm | 1430 mm |
| Wheelbase Size | 2660 mm | 2660 mm |
| Fuel Consumption Overall | 15.7 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 90 L | 66 L |
