1975 Mazda RX 4 Coupe vs. 1978 Pontiac Grand Safari
To start off, 1978 Pontiac Grand Safari 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 4,942 cc (8 cylinders), 1978 Pontiac Grand Safari is equipped with a bigger engine. In terms of performance, 1978 Pontiac Grand Safari (138 HP @ 3600 RPM) has 24 more horse power than 1975 Mazda RX 4 Coupe. (114 HP @ 6000 RPM) In normal driving conditions, 1978 Pontiac Grand Safari should accelerate faster than 1975 Mazda RX 4 Coupe. With that said, vehicle weight also plays an important factor in acceleration. 1978 Pontiac Grand Safari weights approximately 762 kg more than 1975 Mazda RX 4 Coupe. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1978 Pontiac Grand Safari (319 Nm @ 2000 RPM) has 154 more torque (in Nm) than 1975 Mazda RX 4 Coupe. (165 Nm @ 4000 RPM). This means 1978 Pontiac Grand Safari will have an easier job in driving up hills or pulling heavy equipment than 1975 Mazda RX 4 Coupe.
Compare all specifications:
| 1975 Mazda RX 4 Coupe | 1978 Pontiac Grand Safari | |
| Make | Mazda | Pontiac |
| Model | RX 4 Coupe | Grand Safari |
| Year Released | 1975 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 2616 cc | 4942 cc |
| Engine Cylinders | 2 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 114 HP | 138 HP |
| Engine RPM | 6000 RPM | 3600 RPM |
| Torque | 165 Nm | 319 Nm |
| Torque RPM | 4000 RPM | 2000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Vehicle Weight | 1110 kg | 1872 kg |
| Vehicle Length | 4400 mm | 5450 mm |
| Vehicle Width | 1670 mm | 2020 mm |
| Vehicle Height | 1390 mm | 1460 mm |
| Wheelbase Size | 2520 mm | 2950 mm |
