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 4,134 cc (8 cylinders), 2012 Audi A8 is equipped with a bigger engine. In terms of performance, 2012 Audi A8 (345 HP @ 4000 RPM) has 184 more horse power than 2009 Audi A4. (161 HP @ 5700 RPM) In normal driving conditions, 2012 Audi A8 should accelerate faster than 2009 Audi A4.
Because 2012 Audi A8 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, 2012 Audi A8 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, 2012 Audi A8 (800 Nm @ 1750 RPM) has 575 more torque (in Nm) than 2009 Audi A4. (225 Nm @ 1950 RPM). This means 2012 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4. 2012 Audi A8 has automatic transmission and 2009 Audi A4 has manual transmission. 2009 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2012 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 2012 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2009 | 2012 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1779 cc | 4134 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 161 HP | 345 HP |
| Engine RPM | 5700 RPM | 4000 RPM |
| Torque | 225 Nm | 800 Nm |
| Torque RPM | 1950 RPM | 1750 RPM |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 226 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.4 seconds | 5.5 seconds |
| Drive Type | Front | AWD |
| Transmission Type | Manual | 8-speed shiftable automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4580 mm | 5136 mm |
| Vehicle Width | 1780 mm | 1948 mm |
| Vehicle Height | 1400 mm | 1461 mm |
| Wheelbase Size | 2660 mm | 2992 mm |
| Fuel Tank Capacity | 70 L | 90 L |
