1985 Beijing BJ 2021 vs. 1977 BMW 728
To start off, 1985 Beijing BJ 2021 is newer by 8 year(s). Which means there will be less support and parts availability for 1977 BMW 728. In addition, the cost of maintenance, including insurance, on 1977 BMW 728 would be higher. At 2,788 cc (6 cylinders), 1977 BMW 728 is equipped with a bigger engine. In terms of performance, 1977 BMW 728 (170 HP @ 6000 RPM) has 70 more horse power than 1985 Beijing BJ 2021. (100 HP @ 5000 RPM) In normal driving conditions, 1977 BMW 728 should accelerate faster than 1985 Beijing BJ 2021. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 728 weights approximately 56 kg more than 1985 Beijing BJ 2021. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1985 Beijing BJ 2021 is four wheel drive (4WD), it will have significant more traction and grip than 1977 BMW 728. In wet, icy, snow, or gravel driving conditions, 1985 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, 1977 BMW 728 (235 Nm @ 3700 RPM) has 56 more torque (in Nm) than 1985 Beijing BJ 2021. (179 Nm @ 2800 RPM). This means 1977 BMW 728 will have an easier job in driving up hills or pulling heavy equipment than 1985 Beijing BJ 2021.
Compare all specifications:
| 1985 Beijing BJ 2021 | 1977 BMW 728 | |
| Make | Beijing | BMW |
| Model | BJ 2021 | 728 |
| Year Released | 1985 | 1977 |
| Engine Size | 2464 cc | 2788 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 100 HP | 170 HP |
| Engine RPM | 5000 RPM | 6000 RPM |
| Torque | 179 Nm | 235 Nm |
| Torque RPM | 2800 RPM | 3700 RPM |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1480 kg | 1536 kg |
| Vehicle Length | 4290 mm | 4870 mm |
| Vehicle Width | 1800 mm | 1810 mm |
| Vehicle Height | 1620 mm | 1440 mm |
| Wheelbase Size | 2580 mm | 2800 mm |
