1975 GMC Jimmy vs. 1978 Opel Senator
To start off, 1978 Opel Senator is newer by 3 year(s). Which means there will be less support and parts availability for 1975 GMC Jimmy. In addition, the cost of maintenance, including insurance, on 1975 GMC Jimmy would be higher. At 6,555 cc (8 cylinders), 1975 GMC Jimmy is equipped with a bigger engine. In terms of performance, 1975 GMC Jimmy (173 HP @ 3600 RPM) has 3 more horse power than 1978 Opel Senator. (170 HP @ 5400 RPM). In normal driving conditions, 1975 GMC Jimmy should accelerate faster than 1978 Opel Senator. With that said, vehicle weight also plays an important factor in acceleration. 1975 GMC Jimmy weights approximately 540 kg more than 1978 Opel Senator. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1975 GMC Jimmy is four wheel drive (4WD), it will have significant more traction and grip than 1978 Opel Senator. In wet, icy, snow, or gravel driving conditions, 1975 GMC Jimmy will offer significantly more control. 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, 1975 GMC Jimmy (393 Nm @ 2800 RPM) has 145 more torque (in Nm) than 1978 Opel Senator. (248 Nm @ 4200 RPM). This means 1975 GMC Jimmy will have an easier job in driving up hills or pulling heavy equipment than 1978 Opel Senator.
Compare all specifications:
| 1975 GMC Jimmy | 1978 Opel Senator | |
| Make | GMC | Opel |
| Model | Jimmy | Senator |
| Year Released | 1975 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 6555 cc | 2969 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 173 HP | 170 HP |
| Engine RPM | 3600 RPM | 5400 RPM |
| Torque | 393 Nm | 248 Nm |
| Torque RPM | 2800 RPM | 4200 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Vehicle Weight | 1880 kg | 1340 kg |
| Vehicle Length | 4690 mm | 4820 mm |
| Vehicle Width | 2030 mm | 1730 mm |
| Vehicle Height | 1840 mm | 1390 mm |
| Wheelbase Size | 2720 mm | 2740 mm |
