1974 Humber Sceptre vs. 1986 Isuzu Piazza
To start off, 1986 Isuzu Piazza is newer by 12 year(s). Which means there will be less support and parts availability for 1974 Humber Sceptre. In addition, the cost of maintenance, including insurance, on 1974 Humber Sceptre 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 69 more horse power than 1974 Humber Sceptre. (79 HP @ 5200 RPM) In normal driving conditions, 1986 Isuzu Piazza should accelerate faster than 1974 Humber Sceptre. With that said, vehicle weight also plays an important factor in acceleration. 1986 Isuzu Piazza weights approximately 292 kg more than 1974 Humber Sceptre. 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 103 more torque (in Nm) than 1974 Humber Sceptre. (123 Nm @ 3600 RPM). This means 1986 Isuzu Piazza will have an easier job in driving up hills or pulling heavy equipment than 1974 Humber Sceptre.
Compare all specifications:
| 1974 Humber Sceptre | 1986 Isuzu Piazza | |
| Make | Humber | Isuzu |
| Model | Sceptre | Piazza |
| Year Released | 1974 | 1986 |
| Engine Position | Front | Front |
| Engine Size | 1725 cc | 1994 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 79 HP | 148 HP |
| Engine RPM | 5200 RPM | 5400 RPM |
| Torque | 123 Nm | 226 Nm |
| Torque RPM | 3600 RPM | 3000 RPM |
| Engine Bore Size | 81.5 mm | 88 mm |
| Engine Stroke Size | 82.6 mm | 82 mm |
| Engine Compression Ratio | 9.2:1 | 7.9:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 992 kg | 1284 kg |
| Vehicle Length | 4310 mm | 4290 mm |
| Vehicle Width | 1620 mm | 1610 mm |
| Vehicle Height | 1430 mm | 1330 mm |
| Wheelbase Size | 2510 mm | 2510 mm |
