1977 Austin Allegro vs. 2004 GMC Sierra
To start off, 2004 GMC Sierra is newer by 27 year(s). Which means there will be less support and parts availability for 1977 Austin Allegro. In addition, the cost of maintenance, including insurance, on 1977 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 241 more horse power than 1977 Austin Allegro. (59 HP) In normal driving conditions, 2004 GMC Sierra should accelerate faster than 1977 Austin Allegro. With that said, vehicle weight also plays an important factor in acceleration. 2004 GMC Sierra weights approximately 1432 kg more than 1977 Austin Allegro. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Compare all specifications:
| 1977 Austin Allegro | 2004 GMC Sierra | |
| Make | Austin | GMC |
| Model | Allegro | Sierra |
| Year Released | 1977 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 1274 cc | 5965 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 59 HP | 300 HP |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 3 seats |
| Vehicle Weight | 850 kg | 2282 kg |
| Vehicle Length | 4000 mm | 5650 mm |
| Vehicle Width | 1620 mm | 2000 mm |
| Vehicle Height | 1430 mm | 1890 mm |
| Wheelbase Size | 2450 mm | 3380 mm |
