2007 GMC Sierra vs. 1991 Oldsmobile Achieva
To start off, 2007 GMC Sierra is newer by 16 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 5,999 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (300 HP @ 4400 RPM) has 150 more horse power than 1991 Oldsmobile Achieva. (150 HP @ 4800 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1991 Oldsmobile Achieva.
Let's talk about torque, 2007 GMC Sierra (488 Nm @ 4000 RPM) has 239 more torque (in Nm) than 1991 Oldsmobile Achieva. (249 Nm @ 3200 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1991 Oldsmobile Achieva.
Compare all specifications:
| 2007 GMC Sierra | 1991 Oldsmobile Achieva | |
| Make | GMC | Oldsmobile |
| Model | Sierra | Achieva |
| Year Released | 2007 | 1991 |
| Body Type | Pickup | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5999 cc | 3133 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 300 HP | 150 HP |
| Engine RPM | 4400 RPM | 4800 RPM |
| Torque | 488 Nm | 249 Nm |
| Torque RPM | 4000 RPM | 3200 RPM |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 3 doors | 4 doors |
| Vehicle Length | 6330 mm | 4780 mm |
| Vehicle Width | 2450 mm | 1750 mm |
