1991 Ford Sierra vs. 1978 Oldsmobile Eighty-Eight
To start off, 1991 Ford Sierra is newer by 13 year(s). Which means there will be less support and parts availability for 1978 Oldsmobile Eighty-Eight. In addition, the cost of maintenance, including insurance, on 1978 Oldsmobile Eighty-Eight would be higher. At 3,791 cc (6 cylinders), 1978 Oldsmobile Eighty-Eight is equipped with a bigger engine. In terms of performance, 1978 Oldsmobile Eighty-Eight (108 HP @ 3400 RPM) has 33 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM) In normal driving conditions, 1978 Oldsmobile Eighty-Eight should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1978 Oldsmobile Eighty-Eight weights approximately 481 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, 1978 Oldsmobile Eighty-Eight (251 Nm @ 2000 RPM) has 99 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 1978 Oldsmobile Eighty-Eight will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1991 Ford Sierra | 1978 Oldsmobile Eighty-Eight | |
| Make | Ford | Oldsmobile |
| Model | Sierra | Eighty-Eight |
| Year Released | 1991 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 3791 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 75 HP | 108 HP |
| Engine RPM | 4500 RPM | 3400 RPM |
| Torque | 152 Nm | 251 Nm |
| Torque RPM | 2200 RPM | 2000 RPM |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1145 kg | 1626 kg |
| Vehicle Length | 4430 mm | 5550 mm |
| Vehicle Width | 1700 mm | 1950 mm |
| Vehicle Height | 1370 mm | 1410 mm |
| Wheelbase Size | 2620 mm | 2960 mm |
