1979 Mazda 929 vs. 2004 Opel Astra
To start off, 2004 Opel Astra is newer by 25 year(s). Which means there will be less support and parts availability for 1979 Mazda 929. In addition, the cost of maintenance, including insurance, on 1979 Mazda 929 would be higher. At 1,994 cc (4 cylinders), 2004 Opel Astra is equipped with a bigger engine. In terms of performance, 2004 Opel Astra (197 HP @ 5400 RPM) has 114 more horse power than 1979 Mazda 929. (83 HP @ 5000 RPM) In normal driving conditions, 2004 Opel Astra should accelerate faster than 1979 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 2004 Opel Astra weights approximately 316 kg more than 1979 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, 2004 Opel Astra (262 Nm @ 4200 RPM) has 128 more torque (in Nm) than 1979 Mazda 929. (134 Nm @ 3000 RPM). This means 2004 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 1979 Mazda 929.
Compare all specifications:
| 1979 Mazda 929 | 2004 Opel Astra | |
| Make | Mazda | Opel |
| Model | 929 | Astra |
| Year Released | 1979 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 1767 cc | 1994 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 83 HP | 197 HP |
| Engine RPM | 5000 RPM | 5400 RPM |
| Torque | 134 Nm | 262 Nm |
| Torque RPM | 3000 RPM | 4200 RPM |
| Engine Bore Size | 80 mm | 86 mm |
| Engine Stroke Size | 88 mm | 86 mm |
| Engine Compression Ratio | 8.6:1 | 8.8:1 |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1070 kg | 1386 kg |
| Vehicle Length | 4410 mm | 4260 mm |
| Vehicle Width | 1670 mm | 1760 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2520 mm | 2740 mm |
| Fuel Tank Capacity | 55 L | 52 L |
