1979 Austin Allegro vs. 1991 Ford Sierra
To start off, 1991 Ford Sierra is newer by 12 year(s). Which means there will be less support and parts availability for 1979 Austin Allegro. In addition, the cost of maintenance, including insurance, on 1979 Austin Allegro 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 31 more horse power than 1979 Austin Allegro. (44 HP @ 5250 RPM) In normal driving conditions, 1991 Ford Sierra should accelerate faster than 1979 Austin Allegro. With that said, vehicle weight also plays an important factor in acceleration. 1991 Ford Sierra weights approximately 330 kg more than 1979 Austin Allegro. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1991 Ford Sierra (152 Nm @ 2200 RPM) has 78 more torque (in Nm) than 1979 Austin Allegro. (74 Nm @ 2900 RPM). This means 1991 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1979 Austin Allegro.
Compare all specifications:
| 1979 Austin Allegro | 1991 Ford Sierra | |
| Make | Austin | Ford |
| Model | Allegro | Sierra |
| Year Released | 1979 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1098 cc | 1751 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 44 HP | 75 HP |
| Engine RPM | 5250 RPM | 4500 RPM |
| Torque | 74 Nm | 152 Nm |
| Torque RPM | 2900 RPM | 2200 RPM |
| Engine Bore Size | 64.6 mm | 82.5 mm |
| Engine Stroke Size | 83.7 mm | 82 mm |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 815 kg | 1145 kg |
| Vehicle Length | 3200 mm | 4430 mm |
| Vehicle Width | 1620 mm | 1700 mm |
| Vehicle Height | 1400 mm | 1370 mm |
| Wheelbase Size | 2450 mm | 2620 mm |
| Fuel Tank Capacity | 48 L | 60 L |
