1991 Beijing BJ 2020 vs. 1981 BMW 518
To start off, 1991 Beijing BJ 2020 is newer by 10 year(s). Which means there will be less support and parts availability for 1981 BMW 518. In addition, the cost of maintenance, including insurance, on 1981 BMW 518 would be higher. At 2,444 cc (4 cylinders), 1991 Beijing BJ 2020 is equipped with a bigger engine. In terms of performance, 1981 BMW 518 (90 HP @ 5500 RPM) has 20 more horse power than 1991 Beijing BJ 2020. (70 HP @ 3800 RPM) In normal driving conditions, 1981 BMW 518 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 410 kg more than 1981 BMW 518.
Because 1991 Beijing BJ 2020 is four wheel drive (4WD), it will have significant more traction and grip than 1981 BMW 518. 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, 1991 Beijing BJ 2020 (160 Nm @ 2200 RPM) has 20 more torque (in Nm) than 1981 BMW 518. (140 Nm @ 4000 RPM). This means 1991 Beijing BJ 2020 will have an easier job in driving up hills or pulling heavy equipment than 1981 BMW 518.
Compare all specifications:
| 1991 Beijing BJ 2020 | 1981 BMW 518 | |
| Make | Beijing | BMW |
| Model | BJ 2020 | 518 |
| Year Released | 1991 | 1981 |
| Engine Size | 2444 cc | 1766 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 70 HP | 90 HP |
| Engine RPM | 3800 RPM | 5500 RPM |
| Torque | 160 Nm | 140 Nm |
| Torque RPM | 2200 RPM | 4000 RPM |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1550 kg | 1140 kg |
| Vehicle Length | 3870 mm | 4630 mm |
| Vehicle Width | 1760 mm | 1710 mm |
| Vehicle Height | 1880 mm | 1430 mm |
| Wheelbase Size | 2310 mm | 2630 mm |
