1983 Isuzu Piazza vs. 1979 Mazda 121
To start off, 1983 Isuzu Piazza is newer by 4 year(s). Which means there will be less support and parts availability for 1979 Mazda 121. In addition, the cost of maintenance, including insurance, on 1979 Mazda 121 would be higher. At 1,994 cc (4 cylinders), 1983 Isuzu Piazza is equipped with a bigger engine. In terms of performance, 1983 Isuzu Piazza (150 HP @ 5400 RPM) has 60 more horse power than 1979 Mazda 121. (90 HP @ 4800 RPM). In normal driving conditions, 1983 Isuzu Piazza should accelerate faster than 1979 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 1983 Isuzu Piazza weights approximately 146 kg more than 1979 Mazda 121. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1983 Isuzu Piazza (225 Nm @ 3000 RPM) has 65 more torque (in Nm) than 1979 Mazda 121. (160 Nm @ 3000 RPM). This means 1983 Isuzu Piazza will have an easier job in driving up hills or pulling heavy equipment than 1979 Mazda 121.
Compare all specifications:
| 1983 Isuzu Piazza | 1979 Mazda 121 | |
| Make | Isuzu | Mazda |
| Model | Piazza | 121 |
| Year Released | 1983 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 1994 cc | 1970 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 150 HP | 90 HP |
| Engine RPM | 5400 RPM | 4800 RPM |
| Torque | 225 Nm | 160 Nm |
| Torque RPM | 3000 RPM | 3000 RPM |
| Engine Bore Size | 88 mm | 80 mm |
| Engine Stroke Size | 82 mm | 98 mm |
| Engine Compression Ratio | 7.9:1 | 8.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 4 seats |
| Vehicle Weight | 1280 kg | 1134 kg |
| Vehicle Length | 4290 mm | 4510 mm |
| Vehicle Width | 1610 mm | 1690 mm |
| Vehicle Height | 1330 mm | 1350 mm |
| Wheelbase Size | 2510 mm | 2520 mm |
