1991 Ford Sierra vs. 2001 Oldsmobile Aurora
To start off, 2001 Oldsmobile Aurora is newer by 10 year(s). Which means there will be less support and parts availability for 1991 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1991 Ford Sierra would be higher. At 3,473 cc (6 cylinders), 2001 Oldsmobile Aurora is equipped with a bigger engine. In terms of performance, 2001 Oldsmobile Aurora (251 HP @ 5600 RPM) has 176 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 2001 Oldsmobile Aurora should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2001 Oldsmobile Aurora weights approximately 495 kg more than 1991 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2001 Oldsmobile Aurora (353 Nm @ 4400 RPM) has 201 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2001 Oldsmobile Aurora will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 2001 Oldsmobile Aurora | |
| Make | Ford | Oldsmobile |
| Model | Sierra | Aurora |
| Year Released | 1991 | 2001 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 3473 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 251 HP |
| Engine RPM | 4500 RPM | 5600 RPM |
| Torque | 152 Nm | 353 Nm |
| Torque RPM | 2200 RPM | 4400 RPM |
| Engine Compression Ratio | 21.5:1 | 10.3:1 |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1145 kg | 1640 kg |
| Vehicle Length | 4430 mm | 5070 mm |
| Vehicle Width | 1700 mm | 1860 mm |
| Vehicle Height | 1370 mm | 1420 mm |
| Wheelbase Size | 2620 mm | 2900 mm |
| Fuel Tank Capacity | 60 L | 70 L |
