1991 Porsche 928 vs. 1990 Renault 21
To start off, 1991 Porsche 928 is newer by 1 year(s). Which means there will be less support and parts availability for 1990 Renault 21. In addition, the cost of maintenance, including insurance, on 1990 Renault 21 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 170 more horse power than 1990 Renault 21. (175 HP @ 5200 RPM). In normal driving conditions, 1991 Porsche 928 should accelerate faster than 1990 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 1991 Porsche 928 weights approximately 255 kg more than 1990 Renault 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1990 Renault 21 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Porsche 928. In wet, icy, snow, or gravel driving conditions, 1990 Renault 21 will offer significantly more control. 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 229 more torque (in Nm) than 1990 Renault 21. (271 Nm @ 3000 RPM). This means 1991 Porsche 928 will have an easier job in driving up hills or pulling heavy equipment than 1990 Renault 21.
Compare all specifications:
| 1991 Porsche 928 | 1990 Renault 21 | |
| Make | Porsche | Renault |
| Model | 928 | 21 |
| Year Released | 1991 | 1990 |
| Engine Position | Front | Front |
| Engine Size | 5397 cc | 2068 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 345 HP | 175 HP |
| Engine RPM | 5700 RPM | 5200 RPM |
| Torque | 500 Nm | 271 Nm |
| Torque RPM | 4250 RPM | 3000 RPM |
| Engine Bore Size | 100.1 mm | 88 mm |
| Engine Stroke Size | 85.9 mm | 82 mm |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1600 kg | 1345 kg |
| Vehicle Length | 4450 mm | 4650 mm |
| Vehicle Width | 1860 mm | 1720 mm |
| Vehicle Height | 1290 mm | 1450 mm |
| Wheelbase Size | 2510 mm | 2610 mm |
| Fuel Tank Capacity | 86 L | 62 L |
