1975 Mazda 929 vs. 1989 Renault 21
To start off, 1989 Renault 21 is newer by 14 year(s). Which means there will be less support and parts availability for 1975 Mazda 929. In addition, the cost of maintenance, including insurance, on 1975 Mazda 929 would be higher. At 1,995 cc (4 cylinders), 1989 Renault 21 is equipped with a bigger engine. In terms of performance, 1989 Renault 21 (118 HP @ 5500 RPM) has 35 more horse power than 1975 Mazda 929. (83 HP @ 5000 RPM) In normal driving conditions, 1989 Renault 21 should accelerate faster than 1975 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 1989 Renault 21 weights approximately 180 kg more than 1975 Mazda 929. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1989 Renault 21 (169 Nm @ 4500 RPM) has 35 more torque (in Nm) than 1975 Mazda 929. (134 Nm @ 3000 RPM). This means 1989 Renault 21 will have an easier job in driving up hills or pulling heavy equipment than 1975 Mazda 929.
Compare all specifications:
| 1975 Mazda 929 | 1989 Renault 21 | |
| Make | Mazda | Renault |
| Model | 929 | 21 |
| Year Released | 1975 | 1989 |
| Engine Position | Front | Front |
| Engine Size | 1769 cc | 1995 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 83 HP | 118 HP |
| Engine RPM | 5000 RPM | 5500 RPM |
| Torque | 134 Nm | 169 Nm |
| Torque RPM | 3000 RPM | 4500 RPM |
| Engine Bore Size | 80.1 mm | 88 mm |
| Engine Stroke Size | 88 mm | 82 mm |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1070 kg | 1250 kg |
| Vehicle Length | 4410 mm | 4650 mm |
| Vehicle Width | 1670 mm | 1720 mm |
| Vehicle Height | 1420 mm | 1430 mm |
| Wheelbase Size | 2520 mm | 2820 mm |
