1971 Innocenti J4 vs. 2011 Opel Astra
To start off, 2011 Opel Astra is newer by 40 year(s). Which means there will be less support and parts availability for 1971 Innocenti J4. In addition, the cost of maintenance, including insurance, on 1971 Innocenti J4 would be higher. At 1,796 cc (4 cylinders), 2011 Opel Astra is equipped with a bigger engine. In terms of performance, 2011 Opel Astra (139 HP @ 5600 RPM) has 83 more horse power than 1971 Innocenti J4. (56 HP @ 5500 RPM) In normal driving conditions, 2011 Opel Astra should accelerate faster than 1971 Innocenti J4. With that said, vehicle weight also plays an important factor in acceleration. 2011 Opel Astra weights approximately 745 kg more than 1971 Innocenti J4. 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, 2011 Opel Astra (175 Nm @ 3800 RPM) has 91 more torque (in Nm) than 1971 Innocenti J4. (84 Nm @ 2500 RPM). This means 2011 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 1971 Innocenti J4.
Compare all specifications:
| 1971 Innocenti J4 | 2011 Opel Astra | |
| Make | Innocenti | Opel |
| Model | J4 | Astra |
| Year Released | 1971 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 1098 cc | 1796 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 56 HP | 139 HP |
| Engine RPM | 5500 RPM | 5600 RPM |
| Torque | 84 Nm | 175 Nm |
| Torque RPM | 2500 RPM | 3800 RPM |
| Engine Bore Size | 64.6 mm | 80.5 mm |
| Engine Stroke Size | 83.7 mm | 88.2 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 880 kg | 1625 kg |
| Vehicle Length | 3720 mm | 4260 mm |
| Vehicle Width | 1540 mm | 1760 mm |
| Vehicle Height | 1380 mm | 1470 mm |
| Wheelbase Size | 2380 mm | 2620 mm |
