1951 Alvis TA 21 vs. 1972 Mercury Cougar
To start off, 1972 Mercury Cougar is newer by 21 year(s). Which means there will be less support and parts availability for 1951 Alvis TA 21. In addition, the cost of maintenance, including insurance, on 1951 Alvis TA 21 would be higher. At 5,769 cc (8 cylinders), 1972 Mercury Cougar is equipped with a bigger engine. In terms of performance, 1972 Mercury Cougar (167 HP @ 4000 RPM) has 74 more horse power than 1951 Alvis TA 21. (93 HP @ 4000 RPM) In normal driving conditions, 1972 Mercury Cougar should accelerate faster than 1951 Alvis TA 21. With that said, vehicle weight also plays an important factor in acceleration. 1972 Mercury Cougar weights approximately 208 kg more than 1951 Alvis TA 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 1972 Mercury Cougar (363 Nm @ 2400 RPM) has 159 more torque (in Nm) than 1951 Alvis TA 21. (204 Nm @ 2000 RPM). This means 1972 Mercury Cougar will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TA 21.
Compare all specifications:
| 1951 Alvis TA 21 | 1972 Mercury Cougar | |
| Make | Alvis | Mercury |
| Model | TA 21 | Cougar |
| Year Released | 1951 | 1972 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 5769 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 93 HP | 167 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 204 Nm | 363 Nm |
| Torque RPM | 2000 RPM | 2400 RPM |
| Engine Bore Size | 84 mm | 101.6 mm |
| Engine Stroke Size | 90 mm | 88.8 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1448 kg | 1656 kg |
| Vehicle Length | 4630 mm | 5080 mm |
| Vehicle Width | 1680 mm | 1920 mm |
| Vehicle Height | 1600 mm | 1310 mm |
| Wheelbase Size | 2840 mm | 2860 mm |
