2007 Cadillac STS vs. 2011 Infiniti QX56
To start off, 2011 Infiniti QX56 is newer by 4 year(s). Which means there will be less support and parts availability for 2007 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2007 Cadillac STS would be higher. At 5,600 cc (8 cylinders), 2011 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2011 Infiniti QX56 (400 HP @ 5800 RPM) has 80 more horse power than 2007 Cadillac STS. (320 HP @ 6400 RPM) In normal driving conditions, 2011 Infiniti QX56 should accelerate faster than 2007 Cadillac STS. With that said, vehicle weight also plays an important factor in acceleration. 2011 Infiniti QX56 weights approximately 902 kg more than 2007 Cadillac STS. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2011 Infiniti QX56 (559 Nm @ 4000 RPM) has 132 more torque (in Nm) than 2007 Cadillac STS. (427 Nm @ 4400 RPM). This means 2011 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS.
Compare all specifications:
| 2007 Cadillac STS | 2011 Infiniti QX56 | |
| Make | Cadillac | Infiniti |
| Model | STS | QX56 |
| Year Released | 2007 | 2011 |
| Body Type | Sedan | SUV |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 5600 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 320 HP | 400 HP |
| Engine RPM | 6400 RPM | 5800 RPM |
| Torque | 427 Nm | 559 Nm |
| Torque RPM | 4400 RPM | 4000 RPM |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 7 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1638 kg | 2540 kg |
| Vehicle Length | 4990 mm | 5291 mm |
| Vehicle Width | 1850 mm | 2029 mm |
| Vehicle Height | 1470 mm | 1925 mm |
| Wheelbase Size | 2960 mm | 3076 mm |
| Fuel Consumption | 8.7 L/100km | 11.8 L/100km |
| Fuel Consumption City | 13.8 L/100km | 16.8 L/100km |
| Fuel Tank Capacity | 64 L | 98 L |
