2003 Buick Rainier vs. 2008 Infiniti QX56
To start off, 2008 Infiniti QX56 is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Buick Rainier. In addition, the cost of maintenance, including insurance, on 2003 Buick Rainier would be higher. At 5,552 cc (8 cylinders), 2008 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2008 Infiniti QX56 (320 HP @ 5200 RPM) has 49 more horse power than 2003 Buick Rainier. (271 HP @ 6000 RPM) In normal driving conditions, 2008 Infiniti QX56 should accelerate faster than 2003 Buick Rainier. With that said, vehicle weight also plays an important factor in acceleration. 2003 Buick Rainier weights approximately 780 kg more than 2008 Infiniti QX56.
Both vehicles are four wheel drive (4WD) - it offers better handling, traction, and control in all driving conditions compared with front wheel drive or rear 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, 2008 Infiniti QX56 (533 Nm @ 3400 RPM) has 160 more torque (in Nm) than 2003 Buick Rainier. (373 Nm @ 3600 RPM). This means 2008 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2003 Buick Rainier.
Compare all specifications:
| 2003 Buick Rainier | 2008 Infiniti QX56 | |
| Make | Buick | Infiniti |
| Model | Rainier | QX56 |
| Year Released | 2003 | 2008 |
| Body Type | SUV | SUV |
| Engine Position | Front | Front |
| Engine Size | 4195 cc | 5552 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 271 HP | 320 HP |
| Engine RPM | 6000 RPM | 5200 RPM |
| Torque | 373 Nm | 533 Nm |
| Torque RPM | 3600 RPM | 3400 RPM |
| Drive Type | 4WD | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 2100 kg | 1320 kg |
| Vehicle Length | 4920 mm | 5260 mm |
| Vehicle Width | 1920 mm | 2030 mm |
| Vehicle Height | 1900 mm | 2010 mm |
| Wheelbase Size | 2880 mm | 3140 mm |
| Fuel Tank Capacity | 83 L | 106 L |
