1990 BMW 520 vs. 1981 Nissan Sunny
To start off, 1990 BMW 520 is newer by 9 year(s). Which means there will be less support and parts availability for 1981 Nissan Sunny. In addition, the cost of maintenance, including insurance, on 1981 Nissan Sunny would be higher. At 1,991 cc (6 cylinders), 1990 BMW 520 is equipped with a bigger engine. In terms of performance, 1990 BMW 520 (145 HP @ 5900 RPM) has 71 more horse power than 1981 Nissan Sunny. (74 HP @ 5600 RPM). In normal driving conditions, 1990 BMW 520 should accelerate faster than 1981 Nissan Sunny. With that said, vehicle weight also plays an important factor in acceleration. 1990 BMW 520 weights approximately 727 kg more than 1981 Nissan Sunny. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1990 BMW 520 (186 Nm @ 4700 RPM) has 63 more torque (in Nm) than 1981 Nissan Sunny. (123 Nm @ 2800 RPM). This means 1990 BMW 520 will have an easier job in driving up hills or pulling heavy equipment than 1981 Nissan Sunny.
Compare all specifications:
| 1990 BMW 520 | 1981 Nissan Sunny | |
| Make | BMW | Nissan |
| Model | 520 | Sunny |
| Year Released | 1990 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1991 cc | 1487 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 145 HP | 74 HP |
| Engine RPM | 5900 RPM | 5600 RPM |
| Torque | 186 Nm | 123 Nm |
| Torque RPM | 4700 RPM | 2800 RPM |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1542 kg | 815 kg |
| Vehicle Length | 4730 mm | 4140 mm |
| Vehicle Width | 1760 mm | 1650 mm |
| Vehicle Height | 1420 mm | 1400 mm |
| Wheelbase Size | 2770 mm | 2410 mm |
