2008 Audi A4 vs. 2012 Audi A8
To start off, 2012 Audi A8 is newer by 4 year(s). Which means there will be less support and parts availability for 2008 Audi A4. In addition, the cost of maintenance, including insurance, on 2008 Audi A4 would be higher. Both 2008 Audi A4 and 2012 Audi A8 are equipped with a 2,967 cc engine. In terms of performance, 2012 Audi A8 (247 HP @ 4000 RPM) has 25 more horse power than 2008 Audi A4. (222 HP @ 4000 RPM) In normal driving conditions, 2012 Audi A8 should accelerate faster than 2008 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 99 more torque (in Nm) than 2008 Audi A4. (451 Nm @ 1400 RPM). This means 2012 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2008 Audi A4. 2012 Audi A8 has automatic transmission and 2008 Audi A4 has manual transmission. 2008 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:
| 2008 Audi A4 | 2012 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2008 | 2012 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 2967 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 222 HP | 247 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 451 Nm | 550 Nm |
| Torque RPM | 1400 RPM | 1500 RPM |
| Fuel Type | Diesel | Diesel |
| Top Speed | 235 km/hour | 243 km/hour |
| Acceleration 0-100mph | 7.2 seconds | 6.1 seconds |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4550 mm | 5136 mm |
| Vehicle Width | 1780 mm | 1948 mm |
| Vehicle Height | 1430 mm | 1461 mm |
| Wheelbase Size | 2660 mm | 2992 mm |
| Fuel Tank Capacity | 70 L | 90 L |
