1978 Holden Sunbird vs. 1975 Mazda RX 4 Coupe
To start off, 1978 Holden Sunbird is newer by 3 year(s). Which means there will be less support and parts availability for 1975 Mazda RX 4 Coupe. In addition, the cost of maintenance, including insurance, on 1975 Mazda RX 4 Coupe would be higher. At 2,616 cc (2 cylinders), 1975 Mazda RX 4 Coupe is equipped with a bigger engine. In terms of performance, 1975 Mazda RX 4 Coupe (114 HP @ 6000 RPM) has 18 more horse power than 1978 Holden Sunbird. (96 HP @ 5200 RPM) In normal driving conditions, 1975 Mazda RX 4 Coupe should accelerate faster than 1978 Holden Sunbird. With that said, vehicle weight also plays an important factor in acceleration. 1978 Holden Sunbird weights approximately 50 kg more than 1975 Mazda RX 4 Coupe.
Let's talk about torque, 1975 Mazda RX 4 Coupe (165 Nm @ 4000 RPM) has 8 more torque (in Nm) than 1978 Holden Sunbird. (157 Nm @ 3600 RPM). This means 1975 Mazda RX 4 Coupe will have an easier job in driving up hills or pulling heavy equipment than 1978 Holden Sunbird.
Compare all specifications:
| 1978 Holden Sunbird | 1975 Mazda RX 4 Coupe | |
| Make | Holden | Mazda |
| Model | Sunbird | RX 4 Coupe |
| Year Released | 1978 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 1897 cc | 2616 cc |
| Engine Cylinders | 4 cylinders | 2 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 96 HP | 114 HP |
| Engine RPM | 5200 RPM | 6000 RPM |
| Torque | 157 Nm | 165 Nm |
| Torque RPM | 3600 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1160 kg | 1110 kg |
| Vehicle Length | 4500 mm | 4400 mm |
| Vehicle Width | 1710 mm | 1670 mm |
| Vehicle Height | 1340 mm | 1390 mm |
| Wheelbase Size | 2590 mm | 2520 mm |
