1975 Mazda 929 vs. 1981 Pontiac Firebird
To start off, 1981 Pontiac Firebird is newer by 6 year(s). Which means there will be less support and parts availability for 1975 Mazda 929. In addition, the cost of maintenance, including insurance, on 1975 Mazda 929 would be higher. At 5,012 cc (8 cylinders), 1981 Pontiac Firebird is equipped with a bigger engine. In terms of performance, 1981 Pontiac Firebird (145 HP @ 3800 RPM) has 62 more horse power than 1975 Mazda 929. (83 HP @ 5000 RPM) In normal driving conditions, 1981 Pontiac Firebird should accelerate faster than 1975 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 1981 Pontiac Firebird weights approximately 472 kg more than 1975 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, 1981 Pontiac Firebird (324 Nm @ 2400 RPM) has 190 more torque (in Nm) than 1975 Mazda 929. (134 Nm @ 3000 RPM). This means 1981 Pontiac Firebird will have an easier job in driving up hills or pulling heavy equipment than 1975 Mazda 929.
Compare all specifications:
| 1975 Mazda 929 | 1981 Pontiac Firebird | |
| Make | Mazda | Pontiac |
| Model | 929 | Firebird |
| Year Released | 1975 | 1981 |
| Engine Position | Front | Front |
| Engine Size | 1769 cc | 5012 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 83 HP | 145 HP |
| Engine RPM | 5000 RPM | 3800 RPM |
| Torque | 134 Nm | 324 Nm |
| Torque RPM | 3000 RPM | 2400 RPM |
| Engine Bore Size | 80.1 mm | 95 mm |
| Engine Stroke Size | 88 mm | 88.4 mm |
| Engine Compression Ratio | 8.6:1 | 8.6:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1070 kg | 1542 kg |
| Vehicle Length | 4410 mm | 5040 mm |
| Vehicle Width | 1670 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1260 mm |
| Wheelbase Size | 2520 mm | 2750 mm |
| Fuel Tank Capacity | 55 L | 79 L |
