1999 Audi S8 vs. 2003 Infiniti QX4
To start off, 2003 Infiniti QX4 is newer by 4 year(s). Which means there will be less support and parts availability for 1999 Audi S8. In addition, the cost of maintenance, including insurance, on 1999 Audi S8 would be higher. At 4,170 cc (8 cylinders), 1999 Audi S8 is equipped with a bigger engine. In terms of performance, 1999 Audi S8 (247 HP @ 7000 RPM) has 9 more horse power than 2003 Infiniti QX4. (238 HP @ 6000 RPM). In normal driving conditions, 1999 Audi S8 should accelerate faster than 2003 Infiniti QX4. With that said, vehicle weight also plays an important factor in acceleration. 2003 Infiniti QX4 weights approximately 210 kg more than 1999 Audi S8.
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 Infiniti QX4 (359 Nm @ 3200 RPM) has 29 more torque (in Nm) than 1999 Audi S8. (330 Nm @ 3400 RPM). This means 2003 Infiniti QX4 will have an easier job in driving up hills or pulling heavy equipment than 1999 Audi S8.
Compare all specifications:
| 1999 Audi S8 | 2003 Infiniti QX4 | |
| Make | Audi | Infiniti |
| Model | S8 | QX4 |
| Year Released | 1999 | 2003 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4170 cc | 3498 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 238 HP |
| Engine RPM | 7000 RPM | 6000 RPM |
| Torque | 330 Nm | 359 Nm |
| Torque RPM | 3400 RPM | 3200 RPM |
| Drive Type | AWD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1750 kg | 1960 kg |
| Vehicle Length | 5040 mm | 4660 mm |
| Vehicle Width | 1890 mm | 1850 mm |
| Vehicle Height | 1420 mm | 1800 mm |
| Wheelbase Size | 2890 mm | 2710 mm |
