1987 Beijing BJ 2021 vs. 1977 Mazda 121
To start off, 1987 Beijing BJ 2021 is newer by 10 year(s). Which means there will be less support and parts availability for 1977 Mazda 121. In addition, the cost of maintenance, including insurance, on 1977 Mazda 121 would be higher. At 2,466 cc (4 cylinders), 1987 Beijing BJ 2021 is equipped with a bigger engine. In terms of performance, 1987 Beijing BJ 2021 (101 HP @ 5000 RPM) has 15 more horse power than 1977 Mazda 121. (86 HP @ 4800 RPM). In normal driving conditions, 1987 Beijing BJ 2021 should accelerate faster than 1977 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 1987 Beijing BJ 2021 weights approximately 350 kg more than 1977 Mazda 121. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1987 Beijing BJ 2021 is four wheel drive (4WD), it will have significant more traction and grip than 1977 Mazda 121. In wet, icy, snow, or gravel driving conditions, 1987 Beijing BJ 2021 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, 1987 Beijing BJ 2021 (179 Nm @ 2800 RPM) has 19 more torque (in Nm) than 1977 Mazda 121. (160 Nm @ 3000 RPM). This means 1987 Beijing BJ 2021 will have an easier job in driving up hills or pulling heavy equipment than 1977 Mazda 121.
Compare all specifications:
| 1987 Beijing BJ 2021 | 1977 Mazda 121 | |
| Make | Beijing | Mazda |
| Model | BJ 2021 | 121 |
| Year Released | 1987 | 1977 |
| Engine Size | 2466 cc | 1970 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 101 HP | 86 HP |
| Engine RPM | 5000 RPM | 4800 RPM |
| Torque | 179 Nm | 160 Nm |
| Torque RPM | 2800 RPM | 3000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Vehicle Weight | 1480 kg | 1130 kg |
| Vehicle Length | 4290 mm | 4510 mm |
| Vehicle Width | 1800 mm | 1690 mm |
| Vehicle Height | 1620 mm | 1350 mm |
| Wheelbase Size | 2580 mm | 2520 mm |
