2009 Audi A4 vs. 2012 Audi R8
To start off, 2012 Audi R8 is newer by 3 year(s). Which means there will be less support and parts availability for 2009 Audi A4. In addition, the cost of maintenance, including insurance, on 2009 Audi A4 would be higher. At 4,200 cc (8 cylinders), 2012 Audi R8 is equipped with a bigger engine. In terms of performance, 2012 Audi R8 (420 HP) has 233 more horse power than 2009 Audi A4. (187 HP) In normal driving conditions, 2012 Audi R8 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2012 Audi R8 weights approximately 160 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2012 Audi R8 (430 Nm @ 4500 RPM) has 190 more torque (in Nm) than 2009 Audi A4. (240 Nm @ 1950 RPM). This means 2012 Audi R8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4.
Compare all specifications:
| 2009 Audi A4 | 2012 Audi R8 | |
| Make | Audi | Audi |
| Model | A4 | R8 |
| Year Released | 2009 | 2012 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 1781 cc | 4200 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 187 HP | 420 HP |
| Torque | 240 Nm | 430 Nm |
| Torque RPM | 1950 RPM | 4500 RPM |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | 6-speed manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1475 kg | 1635 kg |
| Vehicle Length | 4550 mm | 4435 mm |
| Vehicle Width | 1780 mm | 1930 mm |
| Vehicle Height | 1430 mm | 1252 mm |
| Wheelbase Size | 2660 mm | 2649 mm |
| Fuel Tank Capacity | 66 L | 90 L |
