1970 Monteverdi Hai 450 vs. 1991 Renault 21
To start off, 1991 Renault 21 is newer by 21 year(s). Which means there will be less support and parts availability for 1970 Monteverdi Hai 450. In addition, the cost of maintenance, including insurance, on 1970 Monteverdi Hai 450 would be higher. At 6,974 cc (8 cylinders), 1970 Monteverdi Hai 450 is equipped with a bigger engine. In terms of performance, 1970 Monteverdi Hai 450 (391 HP @ 5000 RPM) has 316 more horse power than 1991 Renault 21. (75 HP @ 5000 RPM). In normal driving conditions, 1970 Monteverdi Hai 450 should accelerate faster than 1991 Renault 21. With that said, vehicle weight also plays an important factor in acceleration. 1970 Monteverdi Hai 450 weights approximately 335 kg more than 1991 Renault 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1970 Monteverdi Hai 450 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 1970 Monteverdi Hai 450. However, in wet, icy, snow, or gravel driving conditions, 1991 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, 1970 Monteverdi Hai 450 (586 Nm @ 4000 RPM) has 457 more torque (in Nm) than 1991 Renault 21. (129 Nm @ 3250 RPM). This means 1970 Monteverdi Hai 450 will have an easier job in driving up hills or pulling heavy equipment than 1991 Renault 21.
Compare all specifications:
| 1970 Monteverdi Hai 450 | 1991 Renault 21 | |
| Make | Monteverdi | Renault |
| Model | Hai 450 | 21 |
| Year Released | 1970 | 1991 |
| Engine Position | Middle | Front |
| Engine Size | 6974 cc | 1721 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 391 HP | 75 HP |
| Engine RPM | 5000 RPM | 5000 RPM |
| Torque | 586 Nm | 129 Nm |
| Torque RPM | 4000 RPM | 3250 RPM |
| Engine Bore Size | 108 mm | 81.1 mm |
| Engine Stroke Size | 95.2 mm | 83.5 mm |
| Engine Compression Ratio | 10.3:1 | 9.2:1 |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1290 kg | 955 kg |
| Vehicle Length | 4410 mm | 4470 mm |
| Vehicle Width | 1800 mm | 1730 mm |
| Vehicle Height | 1100 mm | 1430 mm |
| Wheelbase Size | 2520 mm | 2550 mm |
| Fuel Tank Capacity | 130 L | 55 L |
