1981 Isuzu Piazza vs. 2005 Opel Vectra
To start off, 2005 Opel Vectra is newer by 24 year(s). Which means there will be less support and parts availability for 1981 Isuzu Piazza. In addition, the cost of maintenance, including insurance, on 1981 Isuzu Piazza would be higher. At 1,994 cc (4 cylinders), 1981 Isuzu Piazza is equipped with a bigger engine. In terms of performance, both vehicles can yield 148 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 1981 Isuzu Piazza weights approximately 80 kg more than 2005 Opel Vectra.
Let's talk about torque, 2005 Opel Vectra (321 Nm @ 2000 RPM) has 95 more torque (in Nm) than 1981 Isuzu Piazza. (226 Nm @ 3000 RPM). This means 2005 Opel Vectra will have an easier job in driving up hills or pulling heavy equipment than 1981 Isuzu Piazza.
Compare all specifications:
| 1981 Isuzu Piazza | 2005 Opel Vectra | |
| Make | Isuzu | Opel |
| Model | Piazza | Vectra |
| Year Released | 1981 | 2005 |
| Body Type | Hatchback | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1994 cc | 1909 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 148 HP |
| Engine RPM | 5400 RPM | 4000 RPM |
| Torque | 226 Nm | 321 Nm |
| Torque RPM | 3000 RPM | 2000 RPM |
| Engine Bore Size | 88 mm | 82 mm |
| Engine Stroke Size | 82 mm | 90.4 mm |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 3 doors | 4 doors |
| Vehicle Weight | 1280 kg | 1200 kg |
| Vehicle Length | 4290 mm | 4600 mm |
| Vehicle Width | 1610 mm | 1800 mm |
| Vehicle Height | 1330 mm | 1470 mm |
| Wheelbase Size | 2510 mm | 2640 mm |
