1975 Alfa Romeo Alfetta vs. 1991 Ford Sierra
To start off, 1991 Ford Sierra is newer by 16 year(s). Which means there will be less support and parts availability for 1975 Alfa Romeo Alfetta. In addition, the cost of maintenance, including insurance, on 1975 Alfa Romeo Alfetta would be higher. At 1,751 cc (4 cylinders), 1991 Ford Sierra is equipped with a bigger engine. In terms of performance, 1975 Alfa Romeo Alfetta (108 HP @ 5600 RPM) has 33 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM). In normal driving conditions, 1975 Alfa Romeo Alfetta should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1991 Ford Sierra weights approximately 65 kg more than 1975 Alfa Romeo Alfetta.
Let's talk about torque, 1991 Ford Sierra (152 Nm @ 2200 RPM) has 10 more torque (in Nm) than 1975 Alfa Romeo Alfetta. (142 Nm @ 4300 RPM). This means 1991 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1975 Alfa Romeo Alfetta.
Compare all specifications:
| 1975 Alfa Romeo Alfetta | 1991 Ford Sierra | |
| Make | Alfa Romeo | Ford |
| Model | Alfetta | Sierra |
| Year Released | 1975 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1570 cc | 1751 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 108 HP | 75 HP |
| Engine RPM | 5600 RPM | 4500 RPM |
| Torque | 142 Nm | 152 Nm |
| Torque RPM | 4300 RPM | 2200 RPM |
| Engine Bore Size | 78 mm | 82.5 mm |
| Engine Stroke Size | 82 mm | 82 mm |
| Engine Compression Ratio | 9.0:1 | 21.5:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1080 kg | 1145 kg |
| Vehicle Length | 4290 mm | 4430 mm |
| Vehicle Width | 1620 mm | 1700 mm |
| Vehicle Height | 1440 mm | 1370 mm |
| Wheelbase Size | 2520 mm | 2620 mm |
| Fuel Tank Capacity | 49 L | 60 L |
