2009 Audi A4 vs. 1975 Mazda 929
To start off, 2009 Audi A4 is newer by 34 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 2,995 cc (6 cylinders), 2009 Audi A4 is equipped with a bigger engine. In terms of performance, 2009 Audi A4 (328 HP @ 5500 RPM) has 245 more horse power than 1975 Mazda 929. (83 HP @ 5000 RPM). In normal driving conditions, 2009 Audi A4 should accelerate faster than 1975 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A4 weights approximately 580 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, 2009 Audi A4 (440 Nm @ 2900 RPM) has 306 more torque (in Nm) than 1975 Mazda 929. (134 Nm @ 3000 RPM). This means 2009 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1975 Mazda 929.
Compare all specifications:
| 2009 Audi A4 | 1975 Mazda 929 | |
| Make | Audi | Mazda |
| Model | A4 | 929 |
| Year Released | 2009 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 2995 cc | 1769 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 328 HP | 83 HP |
| Engine RPM | 5500 RPM | 5000 RPM |
| Torque | 440 Nm | 134 Nm |
| Torque RPM | 2900 RPM | 3000 RPM |
| Engine Bore Size | 84.6 mm | 80.1 mm |
| Engine Stroke Size | 89 mm | 88 mm |
| Engine Compression Ratio | 10.3:1 | 8.6:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1650 kg | 1070 kg |
| Vehicle Length | 4720 mm | 4410 mm |
| Vehicle Width | 1830 mm | 1670 mm |
| Vehicle Height | 1410 mm | 1420 mm |
| Wheelbase Size | 2820 mm | 2520 mm |
