2005 Audi A4 vs. 1999 Infiniti Q45
To start off, 2005 Audi A4 is newer by 6 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 95 more horse power than 2005 Audi A4. (170 HP @ 6500 RPM) In normal driving conditions, 1999 Infiniti Q45 should accelerate faster than 2005 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1999 Infiniti Q45 weights approximately 103 kg more than 2005 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1999 Infiniti Q45 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1999 Infiniti Q45. However, in wet, icy, snow, or gravel driving conditions, 2005 Audi A4, being front wheel drive (FWD), will offer much better control with better grip. 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, 1999 Infiniti Q45 (378 Nm) has 148 more torque (in Nm) than 2005 Audi A4. (230 Nm). This means 1999 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2005 Audi A4.
Compare all specifications:
| 2005 Audi A4 | 1999 Infiniti Q45 | |
| Make | Audi | Infiniti |
| Model | A4 | Q45 |
| Year Released | 2005 | 1999 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1786 cc | 4128 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 170 HP | 265 HP |
| Engine RPM | 6500 RPM | 5600 RPM |
| Torque | 230 Nm | 378 Nm |
| Engine Bore Size | 81 mm | 93 mm |
| Engine Stroke Size | 86 mm | 76 mm |
| Engine Compression Ratio | 9.3:1 | 10.5:1 |
| Drive Type | Front | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1656 kg | 1759 kg |
| Vehicle Length | 4580 mm | 5080 mm |
| Vehicle Width | 1780 mm | 1830 mm |
| Vehicle Height | 1400 mm | 1450 mm |
| Wheelbase Size | 2770 mm | 2840 mm |
| Fuel Tank Capacity | 70 L | 60 L |
