1984 Alfa Romeo 33 vs. 1991 Renault 21
To start off, 1991 Renault 21 is newer by 7 year(s). Which means there will be less support and parts availability for 1984 Alfa Romeo 33. In addition, the cost of maintenance, including insurance, on 1984 Alfa Romeo 33 would be higher. At 1,721 cc (4 cylinders), 1991 Renault 21 is equipped with a bigger engine. In terms of performance, 1984 Alfa Romeo 33 (78 HP @ 6000 RPM) has 3 more horse power than 1991 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 1984 Alfa Romeo 33 should accelerate faster than 1991 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 1991 Renault 21 weights approximately 110 kg more than 1984 Alfa Romeo 33.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear 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, 1991 Renault 21 (129 Nm @ 3250 RPM) has 15 more torque (in Nm) than 1984 Alfa Romeo 33. (114 Nm @ 3500 RPM). This means 1991 Renault 21 will have an easier job in driving up hills or pulling heavy equipment than 1984 Alfa Romeo 33.
Compare all specifications:
| 1984 Alfa Romeo 33 | 1991 Renault 21 | |
| Make | Alfa Romeo | Renault |
| Model | 33 | 21 |
| Year Released | 1984 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 1351 cc | 1721 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | boxer | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 78 HP | 75 HP |
| Engine RPM | 6000 RPM | 5000 RPM |
| Torque | 114 Nm | 129 Nm |
| Torque RPM | 3500 RPM | 3250 RPM |
| Engine Bore Size | 80 mm | 81 mm |
| Engine Stroke Size | 67.2 mm | 83.5 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 910 kg | 1020 kg |
| Vehicle Length | 4020 mm | 4650 mm |
| Vehicle Width | 1620 mm | 1720 mm |
| Vehicle Height | 1310 mm | 1430 mm |
| Wheelbase Size | 2520 mm | 2820 mm |
