2009 Audi A4 vs. 1999 Infiniti Q45
To start off, 2009 Audi A4 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 48 more horse power than 2009 Audi A4. (217 HP @ 6300 RPM) In normal driving conditions, 1999 Infiniti Q45 should accelerate faster than 2009 Audi A4. With that said, vehicle weight also plays an important factor in acceleration. 1999 Infiniti Q45 weights approximately 149 kg more than 2009 Audi A4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi A4 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 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, 1999 Infiniti Q45 (378 Nm @ 4000 RPM) has 78 more torque (in Nm) than 2009 Audi A4. (300 Nm @ 3200 RPM). This means 1999 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi A4. 1999 Infiniti Q45 has automatic transmission and 2009 Audi A4 has manual transmission. 2009 Audi A4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1999 Infiniti Q45 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 Audi A4 | 1999 Infiniti Q45 | |
| Make | Audi | Infiniti |
| Model | A4 | Q45 |
| Year Released | 2009 | 1999 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2975 cc | 4128 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 217 HP | 265 HP |
| Engine RPM | 6300 RPM | 5600 RPM |
| Torque | 300 Nm | 378 Nm |
| Torque RPM | 3200 RPM | 4000 RPM |
| Engine Bore Size | 82.5 mm | 93 mm |
| Engine Stroke Size | 92.8 mm | 76 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1610 kg | 1759 kg |
| Vehicle Length | 4550 mm | 5080 mm |
| Vehicle Width | 1780 mm | 1830 mm |
| Vehicle Height | 1430 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2840 mm |
| Fuel Tank Capacity | 66 L | 60 L |
