1977 BMW 728 vs. 1980 Mazda 929
To start off, 1980 Mazda 929 is newer by 3 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 87 more horse power than 1980 Mazda 929. (83 HP @ 5000 RPM). In normal driving conditions, 1977 BMW 728 should accelerate faster than 1980 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 1977 BMW 728 weights approximately 466 kg more than 1980 Mazda 929. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1977 BMW 728 (235 Nm @ 3700 RPM) has 100 more torque (in Nm) than 1980 Mazda 929. (135 Nm @ 3000 RPM). This means 1977 BMW 728 will have an easier job in driving up hills or pulling heavy equipment than 1980 Mazda 929.
Compare all specifications:
| 1977 BMW 728 | 1980 Mazda 929 | |
| Make | BMW | Mazda |
| Model | 728 | 929 |
| Year Released | 1977 | 1980 |
| Engine Position | Front | Front |
| Engine Size | 2788 cc | 1769 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 170 HP | 83 HP |
| Engine RPM | 6000 RPM | 5000 RPM |
| Torque | 235 Nm | 135 Nm |
| Torque RPM | 3700 RPM | 3000 RPM |
| Engine Bore Size | 86 mm | 80 mm |
| Engine Stroke Size | 80 mm | 88 mm |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1536 kg | 1070 kg |
| Vehicle Length | 4870 mm | 4410 mm |
| Vehicle Width | 1810 mm | 1670 mm |
| Vehicle Height | 1440 mm | 1420 mm |
| Wheelbase Size | 2800 mm | 2520 mm |
| Fuel Tank Capacity | 85 L | 55 L |
