2007 Audi A4 vs. 1978 Mazda 929
To start off, 2007 Audi A4 is newer by 29 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 3,123 cc, 2007 Audi A4 is equipped with a bigger engine. In terms of performance, 2007 Audi A4 (252 HP @ 5100 RPM) has 162 more horse power than 1978 Mazda 929. (90 HP @ 4800 RPM). In normal driving conditions, 2007 Audi A4 should accelerate faster than 1978 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 2007 Audi A4 weights approximately 548 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, 2007 Audi A4 (330 Nm @ 3250 RPM) has 170 more torque (in Nm) than 1978 Mazda 929. (160 Nm @ 2500 RPM). This means 2007 Audi A4 will have an easier job in driving up hills or pulling heavy equipment than 1978 Mazda 929.
Compare all specifications:
| 2007 Audi A4 | 1978 Mazda 929 | |
| Make | Audi | Mazda |
| Model | A4 | 929 |
| Year Released | 2007 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 3123 cc | 1970 cc |
| Horse Power | 252 HP | 90 HP |
| Engine RPM | 5100 RPM | 4800 RPM |
| Torque | 330 Nm | 160 Nm |
| Torque RPM | 3250 RPM | 2500 RPM |
| Engine Bore Size | 84.5 mm | 80.1 mm |
| Engine Stroke Size | 92.8 mm | 98 mm |
| Engine Compression Ratio | 12.5:1 | 8.6:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Vehicle Weight | 1698 kg | 1150 kg |
| Vehicle Length | 4580 mm | 4640 mm |
| Vehicle Width | 1400 mm | 1720 mm |
| Vehicle Height | 1780 mm | 1450 mm |
| Wheelbase Size | 2660 mm | 2620 mm |
