1999 GMC Sierra vs. 1972 Austin Allegro
To start off, 1999 GMC Sierra is newer by 27 year(s). Which means there will be less support and parts availability for 1972 Austin Allegro. In addition, the cost of maintenance, including insurance, on 1972 Austin Allegro would be higher. At 4,293 cc (6 cylinders), 1999 GMC Sierra is equipped with a bigger engine. In terms of performance, 1999 GMC Sierra (197 HP @ 4600 RPM) has 129 more horse power than 1972 Austin Allegro. (68 HP @ 5600 RPM). In normal driving conditions, 1999 GMC Sierra should accelerate faster than 1972 Austin Allegro. With that said, vehicle weight also plays an important factor in acceleration. 1999 GMC Sierra weights approximately 905 kg more than 1972 Austin Allegro. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1999 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1972 Austin Allegro. In wet, icy, snow, or gravel driving conditions, 1999 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, 1999 GMC Sierra (352 Nm @ 2800 RPM) has 248 more torque (in Nm) than 1972 Austin Allegro. (104 Nm @ 2900 RPM). This means 1999 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1972 Austin Allegro. 1972 Austin Allegro has automatic transmission and 1999 GMC Sierra has manual transmission. 1999 GMC Sierra will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1972 Austin Allegro will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1999 GMC Sierra | 1972 Austin Allegro | |
| Make | GMC | Austin |
| Model | Sierra | Allegro |
| Year Released | 1999 | 1972 |
| Engine Position | Front | Front |
| Engine Size | 4293 cc | 1485 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 197 HP | 68 HP |
| Engine RPM | 4600 RPM | 5600 RPM |
| Torque | 352 Nm | 104 Nm |
| Torque RPM | 2800 RPM | 2900 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Manual | Automatic |
| Vehicle Weight | 1775 kg | 870 kg |
| Vehicle Length | 5170 mm | 3200 mm |
| Vehicle Width | 2000 mm | 1620 mm |
| Vehicle Height | 1810 mm | 1400 mm |
| Wheelbase Size | 3030 mm | 2450 mm |
