1970 Mazda Cosmo vs. 1989 Mazda RX-7
To start off, 1989 Mazda RX-7 is newer by 19 year(s). Which means there will be less support and parts availability for 1970 Mazda Cosmo. In addition, the cost of maintenance, including insurance, on 1970 Mazda Cosmo would be higher. At 2,616 cc, 1989 Mazda RX-7 is equipped with a bigger engine. In terms of performance, 1989 Mazda RX-7 (197 HP @ 6500 RPM) has 104 more horse power than 1970 Mazda Cosmo. (93 HP @ 7000 RPM) In normal driving conditions, 1989 Mazda RX-7 should accelerate faster than 1970 Mazda Cosmo. With that said, vehicle weight also plays an important factor in acceleration. 1989 Mazda RX-7 weights approximately 360 kg more than 1970 Mazda Cosmo. 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 Mazda RX-7 (271 Nm @ 3500 RPM) has 137 more torque (in Nm) than 1970 Mazda Cosmo. (134 Nm @ 3500 RPM). This means 1989 Mazda RX-7 will have an easier job in driving up hills or pulling heavy equipment than 1970 Mazda Cosmo.
Compare all specifications:
| 1970 Mazda Cosmo | 1989 Mazda RX-7 | |
| Make | Mazda | Mazda |
| Model | Cosmo | RX-7 |
| Year Released | 1970 | 1989 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 1964 cc | 2616 cc |
| Horse Power | 93 HP | 197 HP |
| Engine RPM | 7000 RPM | 6500 RPM |
| Torque | 134 Nm | 271 Nm |
| Torque RPM | 3500 RPM | 3500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 940 kg | 1300 kg |
| Vehicle Length | 4150 mm | 4320 mm |
| Vehicle Width | 1600 mm | 1700 mm |
| Vehicle Height | 1170 mm | 1270 mm |
| Wheelbase Size | 2210 mm | 2430 mm |
