2009 Jeep Grand Cherokee vs. 1979 Mazda 121
To start off, 2009 Jeep Grand Cherokee is newer by 30 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 6,063 cc (8 cylinders), 2009 Jeep Grand Cherokee is equipped with a bigger engine. In terms of performance, 2009 Jeep Grand Cherokee (427 HP @ 6000 RPM) has 337 more horse power than 1979 Mazda 121. (90 HP @ 4800 RPM). In normal driving conditions, 2009 Jeep Grand Cherokee should accelerate faster than 1979 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2009 Jeep Grand Cherokee weights approximately 1086 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 2009 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, 2009 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, 2009 Jeep Grand Cherokee (526 Nm @ 4600 RPM) has 366 more torque (in Nm) than 1979 Mazda 121. (160 Nm @ 3000 RPM). This means 2009 Jeep Grand Cherokee will have an easier job in driving up hills or pulling heavy equipment than 1979 Mazda 121.
Compare all specifications:
| 2009 Jeep Grand Cherokee | 1979 Mazda 121 | |
| Make | Jeep | Mazda |
| Model | Grand Cherokee | 121 |
| Year Released | 2009 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 6063 cc | 1970 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 427 HP | 90 HP |
| Engine RPM | 6000 RPM | 4800 RPM |
| Torque | 526 Nm | 160 Nm |
| Torque RPM | 4600 RPM | 3000 RPM |
| Engine Bore Size | 103 mm | 80 mm |
| Engine Stroke Size | 90.9 mm | 98 mm |
| Engine Compression Ratio | 10.3:1 | 8.6:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 2220 kg | 1134 kg |
| Vehicle Length | 4790 mm | 4510 mm |
| Vehicle Width | 1880 mm | 1690 mm |
| Vehicle Height | 1720 mm | 1350 mm |
| Wheelbase Size | 2790 mm | 2520 mm |
