2006 GMC Sierra vs. 1999 Oldsmobile Alero
To start off, 2006 GMC Sierra is newer by 7 year(s). Which means there will be less support and parts availability for 1999 Oldsmobile Alero. In addition, the cost of maintenance, including insurance, on 1999 Oldsmobile Alero 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 152 more horse power than 1999 Oldsmobile Alero. (148 HP @ 5600 RPM). In normal driving conditions, 2006 GMC Sierra should accelerate faster than 1999 Oldsmobile Alero. With that said, vehicle weight also plays an important factor in acceleration. 2006 GMC Sierra weights approximately 1308 kg more than 1999 Oldsmobile Alero. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1999 Oldsmobile Alero. In wet, icy, snow, or gravel driving conditions, 2006 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, 2006 GMC Sierra (488 Nm @ 4000 RPM) has 278 more torque (in Nm) than 1999 Oldsmobile Alero. (210 Nm @ 4400 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1999 Oldsmobile Alero.
Compare all specifications:
| 2006 GMC Sierra | 1999 Oldsmobile Alero | |
| Make | GMC | Oldsmobile |
| Model | Sierra | Alero |
| Year Released | 2006 | 1999 |
| Body Type | Pickup | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 2392 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 300 HP | 148 HP |
| Engine RPM | 4400 RPM | 5600 RPM |
| Torque | 488 Nm | 210 Nm |
| Torque RPM | 4000 RPM | 4400 RPM |
| Drive Type | 4WD | Front |
| Number of Seats | 3 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 2678 kg | 1370 kg |
| Vehicle Length | 5710 mm | 4750 mm |
| Vehicle Width | 2450 mm | 1790 mm |
| Vehicle Height | 1950 mm | 1390 mm |
| Wheelbase Size | 3380 mm | 2720 mm |
