1963 Austin A 99 vs. 1973 GMC Jimmy
To start off, 1973 GMC Jimmy is newer by 10 year(s). Which means there will be less support and parts availability for 1963 Austin A 99. In addition, the cost of maintenance, including insurance, on 1963 Austin A 99 would be higher. At 5,733 cc (8 cylinders), 1973 GMC Jimmy is equipped with a bigger engine. In terms of performance, 1973 GMC Jimmy (153 HP @ 4000 RPM) has 46 more horse power than 1963 Austin A 99. (107 HP @ 4750 RPM) In normal driving conditions, 1973 GMC Jimmy should accelerate faster than 1963 Austin A 99. With that said, vehicle weight also plays an important factor in acceleration. 1973 GMC Jimmy weights approximately 320 kg more than 1963 Austin A 99. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1973 GMC Jimmy is four wheel drive (4WD), it will have significant more traction and grip than 1963 Austin A 99. In wet, icy, snow, or gravel driving conditions, 1973 GMC Jimmy 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, 1973 GMC Jimmy (345 Nm @ 2400 RPM) has 121 more torque (in Nm) than 1963 Austin A 99. (224 Nm @ 2500 RPM). This means 1973 GMC Jimmy will have an easier job in driving up hills or pulling heavy equipment than 1963 Austin A 99. 1973 GMC Jimmy has automatic transmission and 1963 Austin A 99 has manual transmission. 1963 Austin A 99 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1973 GMC Jimmy will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1963 Austin A 99 | 1973 GMC Jimmy | |
| Make | Austin | GMC |
| Model | A 99 | Jimmy |
| Year Released | 1963 | 1973 |
| Engine Position | Front | Front |
| Engine Size | 2912 cc | 5733 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 107 HP | 153 HP |
| Engine RPM | 4750 RPM | 4000 RPM |
| Torque | 224 Nm | 345 Nm |
| Torque RPM | 2500 RPM | 2400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Vehicle Weight | 1530 kg | 1850 kg |
| Vehicle Length | 4780 mm | 4690 mm |
| Vehicle Width | 1750 mm | 2030 mm |
| Vehicle Height | 1540 mm | 1840 mm |
| Wheelbase Size | 2800 mm | 2720 mm |
