2009 Audi Q7 vs. 1999 Infiniti Q45
To start off, 2009 Audi Q7 is newer by 10 year(s). Which means there will be less support and parts availability for 1999 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 1999 Infiniti Q45 would be higher. At 4,128 cc (8 cylinders), 1999 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 1999 Infiniti Q45 (265 HP @ 5600 RPM) has 36 more horse power than 2009 Audi Q7. (229 HP @ 4000 RPM) In normal driving conditions, 1999 Infiniti Q45 should accelerate faster than 2009 Audi Q7. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi Q7 weights approximately 611 kg more than 1999 Infiniti Q45.
Because 2009 Audi Q7 is four wheel drive (4WD), it will have significant more traction and grip than 1999 Infiniti Q45. In wet, icy, snow, or gravel driving conditions, 2009 Audi Q7 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, 2009 Audi Q7 (500 Nm @ 1750 RPM) has 122 more torque (in Nm) than 1999 Infiniti Q45. (378 Nm @ 4000 RPM). This means 2009 Audi Q7 will have an easier job in driving up hills or pulling heavy equipment than 1999 Infiniti Q45.
Compare all specifications:
| 2009 Audi Q7 | 1999 Infiniti Q45 | |
| Make | Audi | Infiniti |
| Model | Q7 | Q45 |
| Year Released | 2009 | 1999 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2967 cc | 4128 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 229 HP | 265 HP |
| Engine RPM | 4000 RPM | 5600 RPM |
| Torque | 500 Nm | 378 Nm |
| Torque RPM | 1750 RPM | 4000 RPM |
| Engine Compression Ratio | 17.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2370 kg | 1759 kg |
| Vehicle Length | 5090 mm | 5080 mm |
| Vehicle Width | 1990 mm | 1830 mm |
| Vehicle Height | 1740 mm | 1450 mm |
| Wheelbase Size | 3010 mm | 2840 mm |
| Fuel Tank Capacity | 100 L | 60 L |
