2003 Audi A8 vs. 2004 Audi A4
To start off, 2004 Audi A4 is newer by 1 year(s). Which means there will be less support and parts availability for 2003 Audi A8. In addition, the cost of maintenance, including insurance, on 2003 Audi A8 would be higher. At 2,974 cc (6 cylinders), 2003 Audi A8 is equipped with a bigger engine. In terms of performance, 2003 Audi A8 (216 HP @ 6300 RPM) has 15 more horse power than 2004 Audi A4. (201 HP @ 3500 RPM). In normal driving conditions, 2003 Audi A8 should accelerate faster than 2004 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 2004 Audi A4 weights approximately 60 kg more than 2003 Audi A8.
Because 2004 Audi A4 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Audi A8. In wet, icy, snow, or gravel driving conditions, 2004 Audi A4 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, 2004 Audi A4 (451 Nm @ 1400 RPM) has 151 more torque (in Nm) than 2003 Audi A8. (300 Nm @ 3200 RPM). This means 2004 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 2003 Audi A8.
Compare all specifications:
| 2003 Audi A8 | 2004 Audi A4 | |
| Make | Audi | Audi |
| Model | A8 | A4 |
| Year Released | 2003 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2974 cc | 2967 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 216 HP | 201 HP |
| Engine RPM | 6300 RPM | 3500 RPM |
| Torque | 300 Nm | 451 Nm |
| Torque RPM | 3200 RPM | 1400 RPM |
| Engine Bore Size | 82.5 mm | 83 mm |
| Engine Stroke Size | 92.8 mm | 91.4 mm |
| Top Speed | 242 km/hour | 233 km/hour |
| Acceleration 0-100mph | 7.9 seconds | 7.7 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1670 kg | 1730 kg |
| Vehicle Length | 5060 mm | 4590 mm |
| Vehicle Width | 1900 mm | 1780 mm |
| Vehicle Height | 1450 mm | 1430 mm |
| Wheelbase Size | 2950 mm | 2470 mm |
| Fuel Consumption Highway | 7.2 L/100km | 6.2 L/100km |
| Fuel Consumption City | 13.7 L/100km | 11.6 L/100km |
| Fuel Consumption Overall | 9.6 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 90 L | 63 L |
