1991 Daihatsu Rocky vs. 1979 Mazda 121
To start off, 1991 Daihatsu Rocky is newer by 12 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 2,765 cc (4 cylinders), 1991 Daihatsu Rocky is equipped with a bigger engine. In terms of performance, 1979 Mazda 121 (90 HP @ 4800 RPM) has 18 more horse power than 1991 Daihatsu Rocky. (72 HP @ 3600 RPM) In normal driving conditions, 1979 Mazda 121 should accelerate faster than 1991 Daihatsu Rocky. With that said, vehicle weight also plays an important factor in acceleration. 1991 Daihatsu Rocky weights approximately 426 kg more than 1979 Mazda 121.
Because 1991 Daihatsu Rocky 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, 1991 Daihatsu Rocky 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, 1991 Daihatsu Rocky (170 Nm @ 2200 RPM) has 10 more torque (in Nm) than 1979 Mazda 121. (160 Nm @ 3000 RPM). This means 1991 Daihatsu Rocky will have an easier job in driving up hills or pulling heavy equipment than 1979 Mazda 121.
Compare all specifications:
| 1991 Daihatsu Rocky | 1979 Mazda 121 | |
| Make | Daihatsu | Mazda |
| Model | Rocky | 121 |
| Year Released | 1991 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 2765 cc | 1970 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 72 HP | 90 HP |
| Engine RPM | 3600 RPM | 4800 RPM |
| Torque | 170 Nm | 160 Nm |
| Torque RPM | 2200 RPM | 3000 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Rear |
| Vehicle Weight | 1560 kg | 1134 kg |
| Vehicle Length | 4110 mm | 4510 mm |
| Vehicle Width | 1590 mm | 1690 mm |
| Vehicle Height | 1920 mm | 1350 mm |
| Wheelbase Size | 2540 mm | 2520 mm |
