2009 Audi A4 vs. 2012 Audi A8
To start off, 2012 Audi A8 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 2,967 cc (6 cylinders), 2012 Audi A8 is equipped with a bigger engine. In terms of performance, 2012 Audi A8 (247 HP @ 4000 RPM) has 36 more horse power than 2009 Audi A4. (211 HP @ 4300 RPM) In normal driving conditions, 2012 Audi A8 should accelerate faster than 2009 Audi A4.
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 A8 (550 Nm @ 1500 RPM) has 200 more torque (in Nm) than 2009 Audi A4. (350 Nm @ 1500 RPM). This means 2012 Audi A8 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 A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2009 | 2012 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1984 cc | 2967 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 211 HP | 247 HP |
| Engine RPM | 4300 RPM | 4000 RPM |
| Torque | 350 Nm | 550 Nm |
| Torque RPM | 1500 RPM | 1500 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4710 mm | 5136 mm |
| Vehicle Width | 1840 mm | 1948 mm |
| Vehicle Height | 1430 mm | 1461 mm |
| Wheelbase Size | 2820 mm | 2992 mm |
| Fuel Tank Capacity | 70 L | 90 L |
