2009 Audi A8 vs. 1991 Infiniti Q45
To start off, 2009 Audi A8 is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 1991 Infiniti Q45 would be higher. At 4,494 cc (8 cylinders), 1991 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (350 HP @ 6800 RPM) has 73 more horse power than 1991 Infiniti Q45. (277 HP @ 6000 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 1991 Infiniti Q45.
Because 2009 Audi A8 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Infiniti Q45. In wet, icy, snow, or gravel driving conditions, 2009 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, 2009 Audi A8 (442 Nm @ 3500 RPM) has 45 more torque (in Nm) than 1991 Infiniti Q45. (397 Nm @ 4000 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 1991 Infiniti Q45.
Compare all specifications:
| 2009 Audi A8 | 1991 Infiniti Q45 | |
| Make | Audi | Infiniti |
| Model | A8 | Q45 |
| Year Released | 2009 | 1991 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 4494 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 350 HP | 277 HP |
| Engine RPM | 6800 RPM | 6000 RPM |
| Torque | 442 Nm | 397 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 84.5 mm | 93 mm |
| Engine Stroke Size | 92.8 mm | 82.7 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5070 mm | 5080 mm |
| Vehicle Width | 1900 mm | 1830 mm |
| Vehicle Height | 1450 mm | 1440 mm |
| Wheelbase Size | 2950 mm | 2890 mm |
| Fuel Tank Capacity | 90 L | 72 L |
