1983 Opel Kadett vs. 1991 Porsche 928
To start off, 1991 Porsche 928 is newer by 8 year(s). Which means there will be less support and parts availability for 1983 Opel Kadett. In addition, the cost of maintenance, including insurance, on 1983 Opel Kadett would be higher. At 5,397 cc (8 cylinders), 1991 Porsche 928 is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (345 HP @ 5700 RPM) has 231 more horse power than 1983 Opel Kadett. (114 HP @ 5800 RPM) In normal driving conditions, 1991 Porsche 928 should accelerate faster than 1983 Opel Kadett. With that said, vehicle weight also plays an important factor in acceleration. 1991 Porsche 928 weights approximately 610 kg more than 1983 Opel Kadett. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1991 Porsche 928 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 1991 Porsche 928. However, in wet, icy, snow, or gravel driving conditions, 1983 Opel Kadett, 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, 1991 Porsche 928 (500 Nm @ 4250 RPM) has 352 more torque (in Nm) than 1983 Opel Kadett. (148 Nm @ 4800 RPM). This means 1991 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 1983 Opel Kadett.
Compare all specifications:
| 1983 Opel Kadett | 1991 Porsche 928 | |
| Make | Opel | Porsche |
| Model | Kadett | 928 |
| Year Released | 1983 | 1991 |
| Body Type | Coupe | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1796 cc | 5397 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 114 HP | 345 HP |
| Engine RPM | 5800 RPM | 5700 RPM |
| Torque | 148 Nm | 500 Nm |
| Torque RPM | 4800 RPM | 4250 RPM |
| Engine Bore Size | 84.9 mm | 100.1 mm |
| Engine Stroke Size | 79.5 mm | 85.9 mm |
| Engine Compression Ratio | 9.5:1 | 10.4:1 |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 990 kg | 1600 kg |
| Vehicle Length | 4010 mm | 4450 mm |
| Vehicle Width | 1650 mm | 1860 mm |
| Vehicle Height | 1390 mm | 1290 mm |
| Wheelbase Size | 2520 mm | 2510 mm |
| Fuel Tank Capacity | 40 L | 86 L |
