1973 Honda Z vs. 1991 Opel Astra
To start off, 1991 Opel Astra is newer by 18 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 1,389 cc (4 cylinders), 1991 Opel Astra is equipped with a bigger engine. In terms of performance, 1991 Opel Astra (59 HP @ 5200 RPM) has 27 more horse power than 1973 Honda Z. (32 HP @ 6000 RPM) In normal driving conditions, 1991 Opel Astra should accelerate faster than 1973 Honda Z. With that said, vehicle weight also plays an important factor in acceleration. 1991 Opel Astra weights approximately 350 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, 1991 Opel Astra (103 Nm @ 2800 RPM) has 60 more torque (in Nm) than 1973 Honda Z. (43 Nm @ 4000 RPM). This means 1991 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 1973 Honda Z.
Compare all specifications:
| 1973 Honda Z | 1991 Opel Astra | |
| Make | Honda | Opel |
| Model | Z | Astra |
| Year Released | 1973 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 599 cc | 1389 cc |
| Engine Cylinders | 2 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 32 HP | 59 HP |
| Engine RPM | 6000 RPM | 5200 RPM |
| Torque | 43 Nm | 103 Nm |
| Torque RPM | 4000 RPM | 2800 RPM |
| Engine Bore Size | 74 mm | 77.6 mm |
| Engine Stroke Size | 69.6 mm | 73.4 mm |
| Engine Compression Ratio | 8.5:1 | 9.4:1 |
| Top Speed | 126 km/hour | 160 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 580 kg | 930 kg |
| Vehicle Length | 3140 mm | 4060 mm |
| Vehicle Width | 1310 mm | 1690 mm |
| Vehicle Height | 1290 mm | 1430 mm |
| Wheelbase Size | 2010 mm | 2530 mm |
| Fuel Tank Capacity | 25 L | 75 L |
