2007 Jeep Grand Cherokee vs. 1979 Mazda 121
To start off, 2007 Jeep Grand Cherokee is newer by 28 year(s). Which means there will be less support and parts availability for 1979 Mazda 121. In addition, the cost of maintenance, including insurance, on 1979 Mazda 121 would be higher. At 3,700 cc (6 cylinders), 2007 Jeep Grand Cherokee is equipped with a bigger engine. In terms of performance, 2007 Jeep Grand Cherokee (210 HP @ 5200 RPM) has 120 more horse power than 1979 Mazda 121. (90 HP @ 4800 RPM). In normal driving conditions, 2007 Jeep Grand Cherokee should accelerate faster than 1979 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2007 Jeep Grand Cherokee weights approximately 897 kg more than 1979 Mazda 121. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Jeep Grand Cherokee is four wheel drive (4WD), it will have significant more traction and grip than 1979 Mazda 121. In wet, icy, snow, or gravel driving conditions, 2007 Jeep Grand Cherokee 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, 2007 Jeep Grand Cherokee (319 Nm @ 4000 RPM) has 159 more torque (in Nm) than 1979 Mazda 121. (160 Nm @ 3000 RPM). This means 2007 Jeep Grand Cherokee will have an easier job in driving up hills or pulling heavy equipment than 1979 Mazda 121.
Compare all specifications:
| 2007 Jeep Grand Cherokee | 1979 Mazda 121 | |
| Make | Jeep | Mazda |
| Model | Grand Cherokee | 121 |
| Year Released | 2007 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 3700 cc | 1970 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 210 HP | 90 HP |
| Engine RPM | 5200 RPM | 4800 RPM |
| Torque | 319 Nm | 160 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Engine Bore Size | 93.1 mm | 80 mm |
| Engine Stroke Size | 90.7 mm | 98 mm |
| Engine Compression Ratio | 9.6:1 | 8.6:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 2031 kg | 1134 kg |
| Vehicle Length | 4750 mm | 4510 mm |
| Vehicle Width | 2150 mm | 1690 mm |
| Vehicle Height | 1770 mm | 1350 mm |
| Wheelbase Size | 2790 mm | 2520 mm |
