1978 Alfa Romeo Alfetta vs. 1974 Opel Kadett
To start off, 1978 Alfa Romeo Alfetta is newer by 4 year(s). Which means there will be less support and parts availability for 1974 Opel Kadett. In addition, the cost of maintenance, including insurance, on 1974 Opel Kadett would be higher. At 1,747 cc (4 cylinders), 1978 Alfa Romeo Alfetta is equipped with a bigger engine. In terms of performance, 1978 Alfa Romeo Alfetta (144 HP @ 6500 RPM) has 97 more horse power than 1974 Opel Kadett. (47 HP @ 5600 RPM). In normal driving conditions, 1978 Alfa Romeo Alfetta should accelerate faster than 1974 Opel Kadett. With that said, vehicle weight also plays an important factor in acceleration. 1978 Alfa Romeo Alfetta weights approximately 560 kg more than 1974 Opel Kadett. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1974 Opel Kadett is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1974 Opel Kadett. However, in wet, icy, snow, or gravel driving conditions, 1978 Alfa Romeo Alfetta, being front wheel drive (FWD), will offer much better control with better grip. 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 Alfa Romeo Alfetta (169 Nm @ 3500 RPM) has 98 more torque (in Nm) than 1974 Opel Kadett. (71 Nm @ 3400 RPM). This means 1978 Alfa Romeo Alfetta will have an easier job in driving up hills or pulling heavy equipment than 1974 Opel Kadett.
Compare all specifications:
| 1978 Alfa Romeo Alfetta | 1974 Opel Kadett | |
| Make | Alfa Romeo | Opel |
| Model | Alfetta | Kadett |
| Year Released | 1978 | 1974 |
| Engine Position | Front | Front |
| Engine Size | 1747 cc | 991 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 144 HP | 47 HP |
| Engine RPM | 6500 RPM | 5600 RPM |
| Torque | 169 Nm | 71 Nm |
| Torque RPM | 3500 RPM | 3400 RPM |
| Engine Bore Size | 82 mm | 72 mm |
| Engine Stroke Size | 82.7 mm | 61 mm |
| Engine Compression Ratio | 10.3:1 | 8.8:1 |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1350 kg | 790 kg |
| Vehicle Length | 4290 mm | 3900 mm |
| Vehicle Width | 1790 mm | 1590 mm |
| Vehicle Height | 1320 mm | 1320 mm |
| Wheelbase Size | 2550 mm | 2640 mm |
| Fuel Tank Capacity | 70 L | 43 L |
