2003 Buick Century vs. 2005 GMC Sierra
To start off, 2005 GMC Sierra is newer by 2 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 5,965 cc (8 cylinders), 2005 GMC Sierra is equipped with a bigger engine. In terms of performance, 2005 GMC Sierra (321 HP @ 5000 RPM) has 145 more horse power than 2003 Buick Century. (176 HP @ 5200 RPM) In normal driving conditions, 2005 GMC Sierra should accelerate faster than 2003 Buick Century. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 750 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 2005 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2003 Buick Century. In wet, icy, snow, or gravel driving conditions, 2005 GMC Sierra will offer significantly more control. 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, 2005 GMC Sierra (370 Nm @ 4000 RPM) has 106 more torque (in Nm) than 2003 Buick Century. (264 Nm @ 4000 RPM). This means 2005 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 | 2005 GMC Sierra | |
| Make | Buick | GMC |
| Model | Century | Sierra |
| Year Released | 2003 | 2005 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 3134 cc | 5965 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 176 HP | 321 HP |
| Engine RPM | 5200 RPM | 5000 RPM |
| Torque | 264 Nm | 370 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1520 kg | 2270 kg |
| Vehicle Length | 4950 mm | 5790 mm |
| Vehicle Width | 1850 mm | 2000 mm |
| Vehicle Height | 1440 mm | 1850 mm |
| Wheelbase Size | 2780 mm | 3650 mm |
| Fuel Consumption Overall | 9.8 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 64 L | 117 L |
