1978 Mazda 929 vs. 2008 BMW 645
To start off, 2008 BMW 645 is newer by 30 year(s). Which means there will be less support and parts availability for 1978 Mazda 929. In addition, the cost of maintenance, including insurance, on 1978 Mazda 929 would be higher. At 4,398 cc (8 cylinders), 2008 BMW 645 is equipped with a bigger engine. In terms of performance, 2008 BMW 645 (328 HP @ 6100 RPM) has 245 more horse power than 1978 Mazda 929. (83 HP @ 5000 RPM) In normal driving conditions, 2008 BMW 645 should accelerate faster than 1978 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 645 weights approximately 620 kg more than 1978 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, 2008 BMW 645 (450 Nm @ 3600 RPM) has 316 more torque (in Nm) than 1978 Mazda 929. (134 Nm @ 3000 RPM). This means 2008 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1978 Mazda 929.
Compare all specifications:
| 1978 Mazda 929 | 2008 BMW 645 | |
| Make | Mazda | BMW |
| Model | 929 | 645 |
| Year Released | 1978 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 1769 cc | 4398 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 83 HP | 328 HP |
| Engine RPM | 5000 RPM | 6100 RPM |
| Torque | 134 Nm | 450 Nm |
| Torque RPM | 3000 RPM | 3600 RPM |
| Engine Bore Size | 80 mm | 92.1 mm |
| Engine Stroke Size | 88 mm | 82.7 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1070 kg | 1690 kg |
| Vehicle Length | 4410 mm | 4830 mm |
| Vehicle Width | 1670 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1380 mm |
| Wheelbase Size | 2520 mm | 2790 mm |
| Fuel Tank Capacity | 55 L | 70 L |
