2005 Cadillac STS vs. 2006 Infiniti Q45
To start off, 2006 Infiniti Q45 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2005 Cadillac STS would be higher. At 4,490 cc (8 cylinders), 2006 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2006 Infiniti Q45 (340 HP @ 6400 RPM) has 85 more horse power than 2005 Cadillac STS. (255 HP @ 6500 RPM) In normal driving conditions, 2006 Infiniti Q45 should accelerate faster than 2005 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac STS weights approximately 476 kg more than 2006 Infiniti Q45.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2006 Infiniti Q45 (452 Nm @ 4000 RPM) has 113 more torque (in Nm) than 2005 Cadillac STS. (339 Nm @ 3200 RPM). This means 2006 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2005 Cadillac STS.
Compare all specifications:
| 2005 Cadillac STS | 2006 Infiniti Q45 | |
| Make | Cadillac | Infiniti |
| Model | STS | Q45 |
| Year Released | 2005 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3556 cc | 4490 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 255 HP | 340 HP |
| Engine RPM | 6500 RPM | 6400 RPM |
| Torque | 339 Nm | 452 Nm |
| Torque RPM | 3200 RPM | 4000 RPM |
| Engine Bore Size | 94 mm | 93 mm |
| Engine Stroke Size | 86 mm | 82.7 mm |
| Engine Compression Ratio | 10.2:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1796 kg | 1320 kg |
| Vehicle Length | 4990 mm | 5110 mm |
| Vehicle Width | 1850 mm | 1850 mm |
| Vehicle Height | 1470 mm | 1500 mm |
| Wheelbase Size | 2890 mm | 2880 mm |
| Fuel Consumption | 9.8 L/100km | 10 L/100km |
| Fuel Consumption City | 13.8 L/100km | 14 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 64 L | 81 L |
