1991 Ford Sierra vs. 1980 Volvo 66
To start off, 1991 Ford Sierra is newer by 11 year(s). Which means there will be less support and parts availability for 1980 Volvo 66. In addition, the cost of maintenance, including insurance, on 1980 Volvo 66 would be higher. At 1,751 cc (4 cylinders), 1991 Ford Sierra is equipped with a bigger engine. In terms of performance, 1991 Ford Sierra (75 HP @ 4500 RPM) has 19 more horse power than 1980 Volvo 66. (56 HP @ 5100 RPM). In normal driving conditions, 1991 Ford Sierra should accelerate faster than 1980 Volvo 66.
Let's talk about torque, 1991 Ford Sierra (152 Nm @ 2200 RPM) has 58 more torque (in Nm) than 1980 Volvo 66. (94 Nm @ 2800 RPM). This means 1991 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1980 Volvo 66.
Compare all specifications:
| 1991 Ford Sierra | 1980 Volvo 66 | |
| Make | Ford | Volvo |
| Model | Sierra | 66 |
| Year Released | 1991 | 1980 |
| Engine Position | Front | Front |
| Engine Size | 1751 cc | 1287 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 56 HP |
| Engine RPM | 4500 RPM | 5100 RPM |
| Torque | 152 Nm | 94 Nm |
| Torque RPM | 2200 RPM | 2800 RPM |
| Engine Bore Size | 82.5 mm | 73 mm |
| Engine Stroke Size | 82 mm | 77 mm |
| Engine Compression Ratio | 21.5:1 | 8.5:1 |
| Fuel Type | Diesel | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 3910 mm |
| Vehicle Width | 1700 mm | 1550 mm |
