2003 Buick Century vs. 2011 GMC Sierra
To start off, 2011 GMC Sierra is newer by 8 year(s). Which means there will be less support and parts availability for 2003 Buick Century. In addition, the cost of maintenance, including insurance, on 2003 Buick Century would be higher. At 6,200 cc (8 cylinders), 2011 GMC Sierra is equipped with a bigger engine. In terms of performance, 2011 GMC Sierra (403 HP @ 5700 RPM) has 227 more horse power than 2003 Buick Century. (176 HP @ 5200 RPM) In normal driving conditions, 2011 GMC Sierra should accelerate faster than 2003 Buick Century. With that said, vehicle weight also plays an important factor in acceleration. 2011 GMC Sierra weights approximately 832 kg more than 2003 Buick Century. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 GMC Sierra is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2011 GMC Sierra. However, in wet, icy, snow, or gravel driving conditions, 2003 Buick Century, being front wheel drive (FWD), will offer much better control with better grip. 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 GMC Sierra (565 Nm @ 4300 RPM) has 301 more torque (in Nm) than 2003 Buick Century. (264 Nm @ 4000 RPM). This means 2011 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2003 Buick Century.
Compare all specifications:
| 2003 Buick Century | 2011 GMC Sierra | |
| Make | Buick | GMC |
| Model | Century | Sierra |
| Year Released | 2003 | 2011 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 3134 cc | 6200 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 176 HP | 403 HP |
| Engine RPM | 5200 RPM | 5700 RPM |
| Torque | 264 Nm | 565 Nm |
| Torque RPM | 4000 RPM | 4300 RPM |
| Fuel Type | Gasoline | Flex Fuel |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | 6-speed shiftable automatic |
| Vehicle Weight | 1520 kg | 2352 kg |
| Vehicle Length | 4950 mm | 5839 mm |
| Vehicle Width | 1850 mm | 2032 mm |
| Vehicle Height | 1440 mm | 1875 mm |
| Wheelbase Size | 2780 mm | 3645 mm |
| Fuel Consumption | 7.8 L/100km | 13.1 L/100km |
| Fuel Consumption City | 11.8 L/100km | 18.1 L/100km |
| Fuel Tank Capacity | 64 L | 98 L |
