1978 Opel Senator vs. 1975 Mazda Cosmo
To start off, 1978 Opel Senator is newer by 3 year(s). Which means there will be less support and parts availability for 1975 Mazda Cosmo. In addition, the cost of maintenance, including insurance, on 1975 Mazda Cosmo would be higher. At 2,969 cc (6 cylinders), 1978 Opel Senator is equipped with a bigger engine. In terms of performance, 1978 Opel Senator (177 HP @ 5800 RPM) has 75 more horse power than 1975 Mazda Cosmo. (102 HP @ 5300 RPM). In normal driving conditions, 1978 Opel Senator should accelerate faster than 1975 Mazda Cosmo. With that said, vehicle weight also plays an important factor in acceleration. 1978 Opel Senator weights approximately 370 kg more than 1975 Mazda Cosmo. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 1978 Opel Senator (248 Nm @ 4200 RPM) has 81 more torque (in Nm) than 1975 Mazda Cosmo. (167 Nm @ 3000 RPM). This means 1978 Opel Senator will have an easier job in driving up hills or pulling heavy equipment than 1975 Mazda Cosmo. 1975 Mazda Cosmo has automatic transmission and 1978 Opel Senator has manual transmission. 1978 Opel Senator will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1975 Mazda Cosmo will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1978 Opel Senator | 1975 Mazda Cosmo | |
| Make | Opel | Mazda |
| Model | Senator | Cosmo |
| Year Released | 1978 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 2969 cc | 1970 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 177 HP | 102 HP |
| Engine RPM | 5800 RPM | 5300 RPM |
| Torque | 248 Nm | 167 Nm |
| Torque RPM | 4200 RPM | 3000 RPM |
| Engine Bore Size | 95 mm | 80 mm |
| Engine Stroke Size | 69.8 mm | 98 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1485 kg | 1115 kg |
| Vehicle Length | 4700 mm | 4480 mm |
| Vehicle Width | 1730 mm | 1690 mm |
| Vehicle Height | 1390 mm | 1340 mm |
| Wheelbase Size | 2670 mm | 2520 mm |
| Fuel Tank Capacity | 70 L | 65 L |
