2004 Audi A4 vs. 2005 Audi A8
To start off, 2005 Audi A8 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Audi A4. In addition, the cost of maintenance, including insurance, on 2004 Audi A4 would be higher. At 4,170 cc (8 cylinders), 2005 Audi A8 is equipped with a bigger engine. In terms of performance, 2005 Audi A8 (330 HP @ 6500 RPM) has 162 more horse power than 2004 Audi A4. (168 HP @ 6000 RPM) In normal driving conditions, 2005 Audi A8 should accelerate faster than 2004 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi A8 weights approximately 415 kg more than 2004 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2004 Audi A4. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 Audi A8 (430 Nm @ 3500 RPM) has 200 more torque (in Nm) than 2004 Audi A4. (230 Nm @ 3200 RPM). This means 2005 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2004 Audi A4. 2005 Audi A8 has automatic transmission and 2004 Audi A4 has manual transmission. 2004 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Audi A8 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2004 Audi A4 | 2005 Audi A8 | |
| Make | Audi | Audi |
| Model | A4 | A8 |
| Year Released | 2004 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2393 cc | 4170 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 5 valves |
| Horse Power | 168 HP | 330 HP |
| Engine RPM | 6000 RPM | 6500 RPM |
| Torque | 230 Nm | 430 Nm |
| Torque RPM | 3200 RPM | 3500 RPM |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 226 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.8 seconds | 6.3 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1440 kg | 1855 kg |
| Vehicle Length | 4550 mm | 5060 mm |
| Vehicle Width | 1780 mm | 1900 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2580 mm | 2770 mm |
| Fuel Consumption Overall | 9.8 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 70 L | 90 L |
