2003 Buick Rainier vs. 2006 GMC Sierra
To start off, 2006 GMC Sierra is newer by 3 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 5,965 cc (8 cylinders), 2006 GMC Sierra is equipped with a bigger engine. In terms of performance, 2006 GMC Sierra (300 HP @ 4400 RPM) has 29 more horse power than 2003 Buick Rainier. (271 HP @ 6000 RPM) In normal driving conditions, 2006 GMC Sierra should accelerate faster than 2003 Buick Rainier. With that said, vehicle weight also plays an important factor in acceleration. 2006 GMC Sierra weights approximately 336 kg more than 2003 Buick Rainier. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2006 GMC Sierra (488 Nm @ 4000 RPM) has 115 more torque (in Nm) than 2003 Buick Rainier. (373 Nm @ 3600 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2003 Buick Rainier.
Compare all specifications:
| 2003 Buick Rainier | 2006 GMC Sierra | |
| Make | Buick | GMC |
| Model | Rainier | Sierra |
| Year Released | 2003 | 2006 |
| Body Type | SUV | Pickup |
| Engine Position | Front | Front |
| Engine Size | 4195 cc | 5965 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 271 HP | 300 HP |
| Engine RPM | 6000 RPM | 4400 RPM |
| Torque | 373 Nm | 488 Nm |
| Torque RPM | 3600 RPM | 4000 RPM |
| Drive Type | 4WD | 4WD |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 2100 kg | 2436 kg |
| Vehicle Length | 4920 mm | 6570 mm |
| Vehicle Width | 1920 mm | 2450 mm |
| Vehicle Height | 1900 mm | 1970 mm |
| Wheelbase Size | 2880 mm | 4250 mm |
| Fuel Tank Capacity | 83 L | 132 L |
