1956 AC Ace vs. 1991 Citroen ZX
To start off, 1991 Citroen ZX is newer by 35 year(s). Which means there will be less support and parts availability for 1956 AC Ace. In addition, the cost of maintenance, including insurance, on 1956 AC Ace would be higher. At 1,971 cc (6 cylinders), 1956 AC Ace is equipped with a bigger engine. In terms of performance, 1956 AC Ace (123 HP @ 6000 RPM) has 34 more horse power than 1991 Citroen ZX. (89 HP @ 6400 RPM). In normal driving conditions, 1956 AC Ace should accelerate faster than 1991 Citroen ZX. With that said, vehicle weight also plays an important factor in acceleration. 1991 Citroen ZX weights approximately 106 kg more than 1956 AC Ace.
Let's talk about torque, 1956 AC Ace (167 Nm) has 34 more torque (in Nm) than 1991 Citroen ZX. (133 Nm). This means 1956 AC Ace will have an easier job in driving up hills or pulling heavy equipment than 1991 Citroen ZX.
Compare all specifications:
| 1956 AC Ace | 1991 Citroen ZX | |
| Make | AC | Citroen |
| Model | Ace | ZX |
| Year Released | 1956 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1971 cc | 1579 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 123 HP | 89 HP |
| Engine RPM | 6000 RPM | 6400 RPM |
| Torque | 167 Nm | 133 Nm |
| Engine Bore Size | 66 mm | 83 mm |
| Engine Stroke Size | 96 mm | 73 mm |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 894 kg | 1000 kg |
| Vehicle Length | 3850 mm | 4070 mm |
| Vehicle Width | 1520 mm | 1710 mm |
| Vehicle Height | 1250 mm | 1410 mm |
| Wheelbase Size | 2290 mm | 2430 mm |
