2003 Audi A8 vs. 2004 Infiniti Q45
To start off, 2004 Infiniti Q45 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 4,490 cc (8 cylinders), 2004 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2004 Infiniti Q45 (340 HP) has 68 more horse power than 2003 Audi A8. (272 HP) In normal driving conditions, 2004 Infiniti Q45 should accelerate faster than 2003 Audi A8. With that said, vehicle weight also plays an important factor in acceleration. 2003 Audi A8 weights approximately 16 kg more than 2004 Infiniti Q45.
Because 2003 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 2004 Infiniti Q45. In wet, icy, snow, or gravel driving conditions, 2003 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, 2003 Audi A8 (650 Nm) has 198 more torque (in Nm) than 2004 Infiniti Q45. (452 Nm). This means 2003 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2004 Infiniti Q45.
Compare all specifications:
| 2003 Audi A8 | 2004 Infiniti Q45 | |
| Make | Audi | Infiniti |
| Model | A8 | Q45 |
| Year Released | 2003 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3936 cc | 4490 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 272 HP | 340 HP |
| Torque | 650 Nm | 452 Nm |
| Engine Bore Size | 81 mm | 93 mm |
| Engine Stroke Size | 95.5 mm | 83 mm |
| Engine Compression Ratio | 17.5:1 | 10.5:1 |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1820 kg | 1804 kg |
| Vehicle Length | 5190 mm | 5080 mm |
| Vehicle Width | 1900 mm | 1850 mm |
| Vehicle Height | 1460 mm | 1500 mm |
| Wheelbase Size | 3080 mm | 2880 mm |
| Fuel Consumption | 7.5 L/100km | 10.2 L/100km |
| Fuel Consumption City | 13.4 L/100km | 13.8 L/100km |
| Fuel Consumption Overall | 9.6 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 90 L | 81 L |
