1973 Austin Allegro vs. 2007 GMC Sierra
To start off, 2007 GMC Sierra is newer by 34 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 5,998 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (345 HP @ 5200 RPM) has 274 more horse power than 1973 Austin Allegro. (71 HP @ 5500 RPM) In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1973 Austin Allegro.
Because 2007 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, 2007 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, 2007 GMC Sierra (515 Nm @ 4000 RPM) has 383 more torque (in Nm) than 1973 Austin Allegro. (132 Nm @ 2300 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1973 Austin Allegro. 2007 GMC Sierra has automatic transmission and 1973 Austin Allegro has manual transmission. 1973 Austin Allegro will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1973 Austin Allegro | 2007 GMC Sierra | |
| Make | Austin | GMC |
| Model | Allegro | Sierra |
| Year Released | 1973 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 1748 cc | 5998 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 71 HP | 345 HP |
| Engine RPM | 5500 RPM | 5200 RPM |
| Torque | 132 Nm | 515 Nm |
| Torque RPM | 2300 RPM | 4000 RPM |
| Engine Bore Size | 76.2 mm | 102 mm |
| Engine Stroke Size | 95.8 mm | 92 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 3200 mm | 5850 mm |
| Vehicle Width | 1620 mm | 2000 mm |
| Vehicle Height | 1400 mm | 1910 mm |
| Wheelbase Size | 2450 mm | 3650 mm |
| Fuel Tank Capacity | 47 L | 98 L |
