1991 Porsche 928 vs. 1987 Renault 21
To start off, 1991 Porsche 928 is newer by 4 year(s). Which means there will be less support and parts availability for 1987 Renault 21. In addition, the cost of maintenance, including insurance, on 1987 Renault 21 would be higher. At 4,663 cc (8 cylinders), 1991 Porsche 928 is equipped with a bigger engine. In terms of performance, 1991 Porsche 928 (306 HP @ 5900 RPM) has 242 more horse power than 1987 Renault 21. (64 HP @ 4500 RPM). In normal driving conditions, 1991 Porsche 928 should accelerate faster than 1987 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 1991 Porsche 928 weights approximately 425 kg more than 1987 Renault 21. 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, 1987 Renault 21, 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 (408 Nm @ 4100 RPM) has 290 more torque (in Nm) than 1987 Renault 21. (118 Nm @ 2250 RPM). This means 1991 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 1987 Renault 21.
Compare all specifications:
| 1991 Porsche 928 | 1987 Renault 21 | |
| Make | Porsche | Renault |
| Model | 928 | 21 |
| Year Released | 1991 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 4663 cc | 1869 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 306 HP | 64 HP |
| Engine RPM | 5900 RPM | 4500 RPM |
| Torque | 408 Nm | 118 Nm |
| Torque RPM | 4100 RPM | 2250 RPM |
| Engine Bore Size | 97 mm | 80 mm |
| Engine Stroke Size | 78.9 mm | 93 mm |
| Engine Compression Ratio | 10.0:1 | 21.5:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 7 seats |
| Vehicle Weight | 1530 kg | 1105 kg |
| Vehicle Length | 4530 mm | 4650 mm |
| Vehicle Width | 2060 mm | 1720 mm |
| Vehicle Height | 1290 mm | 1430 mm |
| Wheelbase Size | 2510 mm | 2820 mm |
