1977 BMW 520 vs. 1977 Mazda 121
To start off, both 1977 BMW 520 and 1977 Mazda 121 were released in the same year (1977). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 1,990 cc (6 cylinders), 1977 BMW 520 is equipped with a bigger engine. In terms of performance, 1977 BMW 520 (120 HP @ 6000 RPM) has 34 more horse power than 1977 Mazda 121. (86 HP @ 4800 RPM). In normal driving conditions, 1977 BMW 520 should accelerate faster than 1977 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 520 weights approximately 180 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.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, both vehicles can yield 160 Nm of torque. So under normal driving conditions, the ability to climb up hills and pull heavy equipment should be relatively similar for both vehicles.
Compare all specifications:
| 1977 BMW 520 | 1977 Mazda 121 | |
| Make | BMW | Mazda |
| Model | 520 | 121 |
| Year Released | 1977 | 1977 |
| Engine Position | Front | Front |
| Engine Size | 1990 cc | 1970 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 120 HP | 86 HP |
| Engine RPM | 6000 RPM | 4800 RPM |
| Torque | 160 Nm | 160 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Engine Bore Size | 80 mm | 80.1 mm |
| Engine Stroke Size | 66 mm | 98 mm |
| Engine Compression Ratio | 9.2:1 | 8.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Weight | 1310 kg | 1130 kg |
| Vehicle Length | 4630 mm | 4510 mm |
| Vehicle Width | 1700 mm | 1690 mm |
| Vehicle Height | 1430 mm | 1350 mm |
| Wheelbase Size | 2640 mm | 2520 mm |
