1991 Citroen ZX vs. 1987 Ford Sierra
To start off, 1991 Citroen ZX is newer by 4 year(s). Which means there will be less support and parts availability for 1987 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1987 Ford Sierra would be higher. At 2,292 cc (4 cylinders), 1987 Ford Sierra is equipped with a bigger engine. In terms of performance, 1987 Ford Sierra (112 HP @ 5300 RPM) has 41 more horse power than 1991 Citroen ZX. (71 HP @ 4600 RPM) In normal driving conditions, 1987 Ford Sierra should accelerate faster than 1991 Citroen ZX. With that said, vehicle weight also plays an important factor in acceleration. 1987 Ford Sierra weights approximately 100 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.
Let's talk about torque, 1987 Ford Sierra (180 Nm @ 3000 RPM) has 58 more torque (in Nm) than 1991 Citroen ZX. (122 Nm @ 2000 RPM). This means 1987 Ford Sierra will have an easier job in driving up hills or pulling heavy equipment than 1991 Citroen ZX.
Compare all specifications:
| 1991 Citroen ZX | 1987 Ford Sierra | |
| Make | Citroen | Ford |
| Model | ZX | Sierra |
| Year Released | 1991 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 1998 cc | 2292 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 71 HP | 112 HP |
| Engine RPM | 4600 RPM | 5300 RPM |
| Torque | 122 Nm | 180 Nm |
| Torque RPM | 2000 RPM | 3000 RPM |
| Engine Bore Size | 83.1 mm | 96 mm |
| Engine Stroke Size | 88 mm | 79.5 mm |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1035 kg | 1135 kg |
| Vehicle Length | 4070 mm | 4500 mm |
| Vehicle Width | 1710 mm | 1680 mm |
| Vehicle Height | 1410 mm | 1400 mm |
| Wheelbase Size | 2550 mm | 2620 mm |
