2005 GMC Sierra vs. 1991 Oldsmobile Achieva
To start off, 2005 GMC Sierra is newer by 14 year(s). Which means there will be less support and parts availability for 1991 Oldsmobile Achieva. In addition, the cost of maintenance, including insurance, on 1991 Oldsmobile Achieva 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 171 more horse power than 1991 Oldsmobile Achieva. (150 HP @ 4800 RPM). In normal driving conditions, 2005 GMC Sierra should accelerate faster than 1991 Oldsmobile Achieva. With that said, vehicle weight also plays an important factor in acceleration. 2005 GMC Sierra weights approximately 960 kg more than 1991 Oldsmobile Achieva. 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 1991 Oldsmobile Achieva. 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 121 more torque (in Nm) than 1991 Oldsmobile Achieva. (249 Nm @ 3200 RPM). This means 2005 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1991 Oldsmobile Achieva.
Compare all specifications:
| 2005 GMC Sierra | 1991 Oldsmobile Achieva | |
| Make | GMC | Oldsmobile |
| Model | Sierra | Achieva |
| Year Released | 2005 | 1991 |
| Body Type | Pickup | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 3133 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 321 HP | 150 HP |
| Engine RPM | 5000 RPM | 4800 RPM |
| Torque | 370 Nm | 249 Nm |
| Torque RPM | 4000 RPM | 3200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 2270 kg | 1310 kg |
| Vehicle Length | 5790 mm | 4780 mm |
| Vehicle Width | 2000 mm | 1750 mm |
