1991 Citroen ZX vs. 2006 Opel Signum
To start off, 2006 Opel Signum is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Citroen ZX. In addition, the cost of maintenance, including insurance, on 1991 Citroen ZX would be higher. At 2,958 cc (6 cylinders), 2006 Opel Signum is equipped with a bigger engine. In terms of performance, 2006 Opel Signum (175 HP @ 4000 RPM) has 100 more horse power than 1991 Citroen ZX. (75 HP @ 5800 RPM) In normal driving conditions, 2006 Opel Signum should accelerate faster than 1991 Citroen ZX. With that said, vehicle weight also plays an important factor in acceleration. 2006 Opel Signum weights approximately 670 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.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2006 Opel Signum (370 Nm @ 1900 RPM) has 260 more torque (in Nm) than 1991 Citroen ZX. (110 Nm @ 3400 RPM). This means 2006 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1991 Citroen ZX. 2006 Opel Signum has automatic transmission and 1991 Citroen ZX has manual transmission. 1991 Citroen ZX will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Opel Signum will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Citroen ZX | 2006 Opel Signum | |
| Make | Citroen | Opel |
| Model | ZX | Signum |
| Year Released | 1991 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1360 cc | 2958 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 75 HP | 175 HP |
| Engine RPM | 5800 RPM | 4000 RPM |
| Torque | 110 Nm | 370 Nm |
| Torque RPM | 3400 RPM | 1900 RPM |
| Engine Bore Size | 75 mm | 87.5 mm |
| Engine Stroke Size | 77 mm | 82 mm |
| Engine Compression Ratio | 9.3:1 | 18.5:1 |
| Top Speed | 167 km/hour | 221 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1000 kg | 1670 kg |
| Vehicle Length | 4070 mm | 4640 mm |
| Vehicle Width | 1710 mm | 1800 mm |
| Vehicle Height | 1410 mm | 1470 mm |
| Wheelbase Size | 2550 mm | 2840 mm |
| Fuel Tank Capacity | 56 L | 60 L |
