1973 Austin Allegro vs. 2006 GMC Sierra
To start off, 2006 GMC Sierra is newer by 33 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 5,965 cc (8 cylinders), 2006 GMC Sierra is equipped with a bigger engine. In terms of performance, 2006 GMC Sierra (300 HP @ 4400 RPM) has 252 more horse power than 1973 Austin Allegro. (48 HP @ 5250 RPM) In normal driving conditions, 2006 GMC Sierra should accelerate faster than 1973 Austin Allegro. With that said, vehicle weight also plays an important factor in acceleration. 2006 GMC Sierra weights approximately 1636 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.
Because 2006 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1973 Austin Allegro. In wet, icy, snow, or gravel driving conditions, 2006 GMC Sierra will offer significantly more control. 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, 2006 GMC Sierra (488 Nm @ 4000 RPM) has 407 more torque (in Nm) than 1973 Austin Allegro. (81 Nm @ 2450 RPM). This means 2006 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1973 Austin Allegro.
Compare all specifications:
| 1973 Austin Allegro | 2006 GMC Sierra | |
| Make | Austin | GMC |
| Model | Allegro | Sierra |
| Year Released | 1973 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 1098 cc | 5965 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 48 HP | 300 HP |
| Engine RPM | 5250 RPM | 4400 RPM |
| Torque | 81 Nm | 488 Nm |
| Torque RPM | 2450 RPM | 4000 RPM |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 6 seats |
| Vehicle Weight | 800 kg | 2436 kg |
| Vehicle Length | 3860 mm | 6570 mm |
| Vehicle Width | 1620 mm | 2450 mm |
| Vehicle Height | 1400 mm | 1970 mm |
| Wheelbase Size | 2440 mm | 4250 mm |
| Fuel Tank Capacity | 47 L | 132 L |
