1973 Honda Z vs. 2003 Opel Signum
To start off, 2003 Opel Signum is newer by 30 year(s). Which means there will be less support and parts availability for 1973 Honda Z. In addition, the cost of maintenance, including insurance, on 1973 Honda Z would be higher. At 2,172 cc (4 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (115 HP @ 3000 RPM) has 83 more horse power than 1973 Honda Z. (32 HP @ 6000 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 1973 Honda Z. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 955 kg more than 1973 Honda Z. 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, 2003 Opel Signum (280 Nm @ 1500 RPM) has 237 more torque (in Nm) than 1973 Honda Z. (43 Nm @ 4000 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1973 Honda Z.
Compare all specifications:
| 1973 Honda Z | 2003 Opel Signum | |
| Make | Honda | Opel |
| Model | Z | Signum |
| Year Released | 1973 | 2003 |
| Body Type | Hatchback | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 599 cc | 2172 cc |
| Engine Cylinders | 2 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 32 HP | 115 HP |
| Engine RPM | 6000 RPM | 3000 RPM |
| Torque | 43 Nm | 280 Nm |
| Torque RPM | 4000 RPM | 1500 RPM |
| Engine Bore Size | 74 mm | 84.1 mm |
| Engine Stroke Size | 69.6 mm | 98 mm |
| Drive Type | Front | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 580 kg | 1535 kg |
| Vehicle Length | 3140 mm | 4640 mm |
| Vehicle Width | 1310 mm | 1800 mm |
| Vehicle Height | 1290 mm | 1470 mm |
| Wheelbase Size | 2010 mm | 2840 mm |
