1991 Beijing BJ 2020 vs. 1977 Mazda RX-4
To start off, 1991 Beijing BJ 2020 is newer by 14 year(s). Which means there will be less support and parts availability for 1977 Mazda RX-4. In addition, the cost of maintenance, including insurance, on 1977 Mazda RX-4 would be higher. At 2,616 cc, 1977 Mazda RX-4 is equipped with a bigger engine. In terms of performance, 1977 Mazda RX-4 (114 HP @ 6000 RPM) has 44 more horse power than 1991 Beijing BJ 2020. (70 HP @ 3800 RPM) In normal driving conditions, 1977 Mazda RX-4 should accelerate faster than 1991 Beijing BJ 2020. With that said, vehicle weight also plays an important factor in acceleration. 1991 Beijing BJ 2020 weights approximately 440 kg more than 1977 Mazda RX-4.
Because 1991 Beijing BJ 2020 is four wheel drive (4WD), it will have significant more traction and grip than 1977 Mazda RX-4. In wet, icy, snow, or gravel driving conditions, 1991 Beijing BJ 2020 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, 1977 Mazda RX-4 (165 Nm @ 4000 RPM) has 5 more torque (in Nm) than 1991 Beijing BJ 2020. (160 Nm @ 2200 RPM). This means 1977 Mazda RX-4 will have an easier job in driving up hills or pulling heavy equipment than 1991 Beijing BJ 2020.
Compare all specifications:
| 1991 Beijing BJ 2020 | 1977 Mazda RX-4 | |
| Make | Beijing | Mazda |
| Model | BJ 2020 | RX-4 |
| Year Released | 1991 | 1977 |
| Engine Size | 2444 cc | 2616 cc |
| Engine Type | in-line | dual-disk rotary |
| Horse Power | 70 HP | 114 HP |
| Engine RPM | 3800 RPM | 6000 RPM |
| Torque | 160 Nm | 165 Nm |
| Torque RPM | 2200 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Vehicle Weight | 1550 kg | 1110 kg |
| Vehicle Length | 3870 mm | 4400 mm |
| Vehicle Width | 1760 mm | 1670 mm |
| Vehicle Height | 1880 mm | 1390 mm |
| Wheelbase Size | 2310 mm | 2520 mm |
