2004 GMC Sierra vs. 1973 Austin Allegro
To start off, 2004 GMC Sierra is newer by 31 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), 2004 GMC Sierra is equipped with a bigger engine. In terms of performance, 2004 GMC Sierra (300 HP) has 229 more horse power than 1973 Austin Allegro. (71 HP). In normal driving conditions, 2004 GMC Sierra should accelerate faster than 1973 Austin Allegro. With that said, vehicle weight also plays an important factor in acceleration. 2004 GMC Sierra weights approximately 1840 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 2004 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, 2004 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, 2004 GMC Sierra (489 Nm) has 357 more torque (in Nm) than 1973 Austin Allegro. (132 Nm). This means 2004 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1973 Austin Allegro.
Compare all specifications:
| 2004 GMC Sierra | 1973 Austin Allegro | |
| Make | GMC | Austin |
| Model | Sierra | Allegro |
| Year Released | 2004 | 1973 |
| Engine Position | Front | Front |
| Engine Size | 5965 cc | 1748 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 300 HP | 71 HP |
| Torque | 489 Nm | 132 Nm |
| Engine Bore Size | 102 mm | 76.2 mm |
| Engine Stroke Size | 92 mm | 95.8 mm |
| Drive Type | 4WD | Front |
| Number of Seats | 6 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2730 kg | 890 kg |
| Vehicle Length | 6030 mm | 3200 mm |
| Vehicle Width | 2030 mm | 1620 mm |
| Vehicle Height | 1940 mm | 1400 mm |
| Wheelbase Size | 4250 mm | 2450 mm |
| Fuel Tank Capacity | 129 L | 47 L |
