1973 Austin Allegro vs. 1986 Isuzu Piazza
To start off, 1986 Isuzu Piazza is newer by 13 year(s). Which means there will be less support and parts availability for 1973 Austin Allegro. In addition, the cost of maintenance, including insurance, on 1973 Austin Allegro would be higher. At 1,994 cc (4 cylinders), 1986 Isuzu Piazza is equipped with a bigger engine. In terms of performance, 1986 Isuzu Piazza (148 HP @ 5400 RPM) has 100 more horse power than 1973 Austin Allegro. (48 HP @ 5250 RPM) In normal driving conditions, 1986 Isuzu Piazza should accelerate faster than 1973 Austin Allegro. With that said, vehicle weight also plays an important factor in acceleration. 1986 Isuzu Piazza weights approximately 484 kg more than 1973 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, 1986 Isuzu Piazza (226 Nm @ 3000 RPM) has 145 more torque (in Nm) than 1973 Austin Allegro. (81 Nm @ 2450 RPM). This means 1986 Isuzu Piazza will have an easier job in driving up hills or pulling heavy equipment than 1973 Austin Allegro.
Compare all specifications:
| 1973 Austin Allegro | 1986 Isuzu Piazza | |
| Make | Austin | Isuzu |
| Model | Allegro | Piazza |
| Year Released | 1973 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 1098 cc | 1994 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 48 HP | 148 HP |
| Engine RPM | 5250 RPM | 5400 RPM |
| Torque | 81 Nm | 226 Nm |
| Torque RPM | 2450 RPM | 3000 RPM |
| Engine Bore Size | 64.6 mm | 88 mm |
| Engine Stroke Size | 83.7 mm | 82 mm |
| Engine Compression Ratio | 8.5:1 | 7.9:1 |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 800 kg | 1284 kg |
| Vehicle Length | 3860 mm | 4290 mm |
| Vehicle Width | 1620 mm | 1610 mm |
| Vehicle Height | 1400 mm | 1330 mm |
| Wheelbase Size | 2440 mm | 2510 mm |
