1973 Austin Allegro vs. 2009 Chevrolet HHR
To start off, 2009 Chevrolet HHR is newer by 36 year(s). Which means there will be less support and parts availability for 1973 Austin Allegro. In addition, the cost of maintenance, including insurance, on 1973 Austin Allegro would be higher. At 2,399 cc (4 cylinders), 2009 Chevrolet HHR is equipped with a bigger engine. In terms of performance, 2009 Chevrolet HHR (168 HP @ 6200 RPM) has 120 more horse power than 1973 Austin Allegro. (48 HP @ 5250 RPM) In normal driving conditions, 2009 Chevrolet HHR should accelerate faster than 1973 Austin Allegro. With that said, vehicle weight also plays an important factor in acceleration. 2009 Chevrolet HHR weights approximately 670 kg more than 1973 Austin Allegro. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2009 Chevrolet HHR (222 Nm @ 4800 RPM) has 141 more torque (in Nm) than 1973 Austin Allegro. (81 Nm @ 2450 RPM). This means 2009 Chevrolet HHR will have an easier job in driving up hills or pulling heavy equipment than 1973 Austin Allegro.
Compare all specifications:
| 1973 Austin Allegro | 2009 Chevrolet HHR | |
| Make | Austin | Chevrolet |
| Model | Allegro | HHR |
| Year Released | 1973 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 1098 cc | 2399 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 48 HP | 168 HP |
| Engine RPM | 5250 RPM | 6200 RPM |
| Torque | 81 Nm | 222 Nm |
| Torque RPM | 2450 RPM | 4800 RPM |
| Engine Bore Size | 64.6 mm | 88 mm |
| Engine Stroke Size | 83.7 mm | 98 mm |
| Engine Compression Ratio | 8.5:1 | 10.4:1 |
| Top Speed | 134 km/hour | 180 km/hour |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 800 kg | 1470 kg |
| Vehicle Length | 3860 mm | 3380 mm |
| Vehicle Width | 1620 mm | 1760 mm |
| Vehicle Height | 1400 mm | 1610 mm |
| Wheelbase Size | 2440 mm | 2640 mm |
| Fuel Tank Capacity | 47 L | 61 L |
