1975 Opel Kadett vs. 1991 Porsche 968
To start off, 1991 Porsche 968 is newer by 16 year(s). Which means there will be less support and parts availability for 1975 Opel Kadett. In addition, the cost of maintenance, including insurance, on 1975 Opel Kadett would be higher. At 2,990 cc (4 cylinders), 1991 Porsche 968 is equipped with a bigger engine. In terms of performance, 1991 Porsche 968 (240 HP @ 6200 RPM) has 193 more horse power than 1975 Opel Kadett. (47 HP @ 5600 RPM) In normal driving conditions, 1991 Porsche 968 should accelerate faster than 1975 Opel Kadett. With that said, vehicle weight also plays an important factor in acceleration. 1991 Porsche 968 weights approximately 565 kg more than 1975 Opel Kadett. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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 Porsche 968 (305 Nm @ 4100 RPM) has 234 more torque (in Nm) than 1975 Opel Kadett. (71 Nm @ 3400 RPM). This means 1991 Porsche 968 will have an easier job in driving up hills or pulling heavy equipment than 1975 Opel Kadett.
Compare all specifications:
| 1975 Opel Kadett | 1991 Porsche 968 | |
| Make | Opel | Porsche |
| Model | Kadett | 968 |
| Year Released | 1975 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 993 cc | 2990 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 47 HP | 240 HP |
| Engine RPM | 5600 RPM | 6200 RPM |
| Torque | 71 Nm | 305 Nm |
| Torque RPM | 3400 RPM | 4100 RPM |
| Engine Compression Ratio | 8.8:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 3 doors | 2 doors |
| Vehicle Weight | 835 kg | 1400 kg |
| Vehicle Length | 3900 mm | 4330 mm |
| Vehicle Width | 1590 mm | 1740 mm |
| Vehicle Height | 1320 mm | 1280 mm |
| Wheelbase Size | 2520 mm | 2510 mm |
| Fuel Consumption Overall | 6 L/100km | 9.1 L/100km |
| Fuel Tank Capacity | 43 L | 74 L |
