2009 Audi A4 vs. 2008 Audi R8
To start off, 2009 Audi A4 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 Audi R8. In addition, the cost of maintenance, including insurance, on 2008 Audi R8 would be higher. At 4,163 cc (8 cylinders), 2008 Audi R8 is equipped with a bigger engine. In terms of performance, 2008 Audi R8 (420 HP @ 8250 RPM) has 321 more horse power than 2009 Audi A4. (99 HP @ 4000 RPM) In normal driving conditions, 2008 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 270 kg more than 2008 Audi R8.
Because 2008 Audi R8 is all wheel drive (AWD), it will have significant more traction and grip than 2009 Audi A4. In wet, icy, snow, or gravel driving conditions, 2008 Audi R8 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, 2008 Audi R8 (430 Nm @ 4500 RPM) has 180 more torque (in Nm) than 2009 Audi A4. (250 Nm @ 1900 RPM). This means 2008 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 | 2008 Audi R8 | |
| Make | Audi | Audi |
| Model | A4 | R8 |
| Year Released | 2009 | 2008 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Middle |
| Engine Size | 1896 cc | 4163 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 99 HP | 420 HP |
| Engine RPM | 4000 RPM | 8250 RPM |
| Torque | 250 Nm | 430 Nm |
| Torque RPM | 1900 RPM | 4500 RPM |
| Drive Type | Front | AWD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1430 kg | 1160 kg |
| Vehicle Length | 4550 mm | 4440 mm |
| Vehicle Width | 1780 mm | 1910 mm |
| Vehicle Height | 1430 mm | 1260 mm |
| Wheelbase Size | 2660 mm | 2660 mm |
| Fuel Consumption Overall | 5.4 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
