1978 Mazda RX-7 vs. 1972 Opel Kadett
To start off, 1978 Mazda RX-7 is newer by 6 year(s). Which means there will be less support and parts availability for 1972 Opel Kadett. In addition, the cost of maintenance, including insurance, on 1972 Opel Kadett would be higher. At 2,292 cc, 1978 Mazda RX-7 is equipped with a bigger engine. In terms of performance, 1978 Mazda RX-7 (105 HP @ 6000 RPM) has 57 more horse power than 1972 Opel Kadett. (48 HP @ 5600 RPM). In normal driving conditions, 1978 Mazda RX-7 should accelerate faster than 1972 Opel Kadett. With that said, vehicle weight also plays an important factor in acceleration. 1978 Mazda RX-7 weights approximately 300 kg more than 1972 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, 1978 Mazda RX-7 (145 Nm @ 4000 RPM) has 74 more torque (in Nm) than 1972 Opel Kadett. (71 Nm @ 2700 RPM). This means 1978 Mazda RX-7 will have an easier job in driving up hills or pulling heavy equipment than 1972 Opel Kadett.
Compare all specifications:
| 1978 Mazda RX-7 | 1972 Opel Kadett | |
| Make | Mazda | Opel |
| Model | RX-7 | Kadett |
| Year Released | 1978 | 1972 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2292 cc | 1078 cc |
| Engine Type | dual-disk rotary | in-line |
| Horse Power | 105 HP | 48 HP |
| Engine RPM | 6000 RPM | 5600 RPM |
| Torque | 145 Nm | 71 Nm |
| Torque RPM | 4000 RPM | 2700 RPM |
| Engine Compression Ratio | 9.4:1 | 8.8:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1060 kg | 760 kg |
| Vehicle Length | 4290 mm | 4190 mm |
| Vehicle Width | 1680 mm | 1590 mm |
| Vehicle Height | 1280 mm | 1420 mm |
| Wheelbase Size | 2430 mm | 2400 mm |
| Fuel Tank Capacity | 65 L | 43 L |
