1991 Citroen ZX vs. 1956 Morris Isis
To start off, 1991 Citroen ZX is newer by 35 year(s). Which means there will be less support and parts availability for 1956 Morris Isis. In addition, the cost of maintenance, including insurance, on 1956 Morris Isis would be higher. At 2,639 cc (6 cylinders), 1956 Morris Isis is equipped with a bigger engine. In terms of performance, 1956 Morris Isis (85 HP @ 4250 RPM) has 10 more horse power than 1991 Citroen ZX. (75 HP @ 5800 RPM) In normal driving conditions, 1956 Morris Isis should accelerate faster than 1991 Citroen ZX. With that said, vehicle weight also plays an important factor in acceleration. 1956 Morris Isis weights approximately 297 kg more than 1991 Citroen ZX. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1956 Morris Isis is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1956 Morris Isis. However, in wet, icy, snow, or gravel driving conditions, 1991 Citroen ZX, being front wheel drive (FWD), will offer much better control with better grip. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 1956 Morris Isis (168 Nm @ 2000 RPM) has 58 more torque (in Nm) than 1991 Citroen ZX. (110 Nm @ 3400 RPM). This means 1956 Morris Isis will have an easier job in driving up hills or pulling heavy equipment than 1991 Citroen ZX.
Compare all specifications:
| 1991 Citroen ZX | 1956 Morris Isis | |
| Make | Citroen | Morris |
| Model | ZX | Isis |
| Year Released | 1991 | 1956 |
| Engine Position | Front | Front |
| Engine Size | 1360 cc | 2639 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 75 HP | 85 HP |
| Engine RPM | 5800 RPM | 4250 RPM |
| Torque | 110 Nm | 168 Nm |
| Torque RPM | 3400 RPM | 2000 RPM |
| Engine Bore Size | 75 mm | 79.4 mm |
| Engine Stroke Size | 77 mm | 88.9 mm |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1000 kg | 1297 kg |
| Vehicle Length | 4070 mm | 4530 mm |
| Vehicle Width | 1710 mm | 1660 mm |
| Vehicle Height | 1410 mm | 1620 mm |
| Wheelbase Size | 2550 mm | 2470 mm |
