2003 Oldsmobile Alero 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 Oldsmobile Alero. In addition, the cost of maintenance, including insurance, on 2003 Oldsmobile Alero would be higher. At 5,999 cc (8 cylinders), 2011 GMC Sierra is equipped with a bigger engine. In terms of performance, 2011 GMC Sierra (353 HP @ 5400 RPM) has 214 more horse power than 2003 Oldsmobile Alero. (139 HP @ 5600 RPM) In normal driving conditions, 2011 GMC Sierra should accelerate faster than 2003 Oldsmobile Alero. With that said, vehicle weight also plays an important factor in acceleration. 2011 GMC Sierra weights approximately 1304 kg more than 2003 Oldsmobile Alero. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 2003 Oldsmobile Alero. In wet, icy, snow, or gravel driving conditions, 2011 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, 2011 GMC Sierra (506 Nm @ 4400 RPM) has 303 more torque (in Nm) than 2003 Oldsmobile Alero. (203 Nm @ 4000 RPM). This means 2011 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2003 Oldsmobile Alero.
Compare all specifications:
| 2003 Oldsmobile Alero | 2011 GMC Sierra | |
| Make | Oldsmobile | GMC |
| Model | Alero | Sierra |
| Year Released | 2003 | 2011 |
| Body Type | Coupe | Pickup |
| Engine Position | Front | Front |
| Engine Size | 2196 cc | 5999 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 139 HP | 353 HP |
| Engine RPM | 5600 RPM | 5400 RPM |
| Torque | 203 Nm | 506 Nm |
| Torque RPM | 4000 RPM | 4400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 3 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1360 kg | 2664 kg |
| Vehicle Length | 4750 mm | 5710 mm |
| Vehicle Width | 1790 mm | 2040 mm |
| Vehicle Height | 1390 mm | 1940 mm |
| Wheelbase Size | 2720 mm | 3380 mm |
| Fuel Tank Capacity | 53 L | 129 L |
