1975 Mazda 929 vs. 2011 Opel Astra
To start off, 2011 Opel Astra is newer by 36 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 1,796 cc (4 cylinders), 2011 Opel Astra is equipped with a bigger engine. In terms of performance, 2011 Opel Astra (138 HP @ 6300 RPM) has 55 more horse power than 1975 Mazda 929. (83 HP @ 5000 RPM) In normal driving conditions, 2011 Opel Astra should accelerate faster than 1975 Mazda 929. With that said, vehicle weight also plays an important factor in acceleration. 2011 Opel Astra weights approximately 70 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.
Because 1975 Mazda 929 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1975 Mazda 929. However, in wet, icy, snow, or gravel driving conditions, 2011 Opel Astra, being front wheel drive (FWD), will offer much better control with better grip. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2011 Opel Astra (176 Nm @ 3800 RPM) has 39 more torque (in Nm) than 1975 Mazda 929. (137 Nm @ 3000 RPM). This means 2011 Opel Astra will have an easier job in driving up hills or pulling heavy equipment than 1975 Mazda 929.
Compare all specifications:
| 1975 Mazda 929 | 2011 Opel Astra | |
| Make | Mazda | Opel |
| Model | 929 | Astra |
| Year Released | 1975 | 2011 |
| Engine Position | Front | Front |
| Engine Size | 1769 cc | 1796 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 83 HP | 138 HP |
| Engine RPM | 5000 RPM | 6300 RPM |
| Torque | 137 Nm | 176 Nm |
| Torque RPM | 3000 RPM | 3800 RPM |
| Engine Bore Size | 80.1 mm | 80.5 mm |
| Engine Stroke Size | 88 mm | 88.2 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1160 kg | 1230 kg |
| Vehicle Length | 4550 mm | 4480 mm |
| Vehicle Width | 1670 mm | 2030 mm |
| Vehicle Height | 1420 mm | 1420 mm |
| Wheelbase Size | 2520 mm | 2620 mm |
| Fuel Tank Capacity | 65 L | 52 L |
