1951 Alvis TA 21 vs. 1979 Mercury Cougar
To start off, 1979 Mercury Cougar is newer by 28 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 4,942 cc (8 cylinders), 1979 Mercury Cougar is equipped with a bigger engine. In terms of performance, 1979 Mercury Cougar (134 HP @ 3400 RPM) has 41 more horse power than 1951 Alvis TA 21. (93 HP @ 4000 RPM) In normal driving conditions, 1979 Mercury Cougar should accelerate faster than 1951 Alvis TA 21. With that said, vehicle weight also plays an important factor in acceleration. 1979 Mercury Cougar weights approximately 407 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, 1979 Mercury Cougar (336 Nm @ 1600 RPM) has 132 more torque (in Nm) than 1951 Alvis TA 21. (204 Nm @ 2000 RPM). This means 1979 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 | 1979 Mercury Cougar | |
| Make | Alvis | Mercury |
| Model | TA 21 | Cougar |
| Year Released | 1951 | 1979 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 4942 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 93 HP | 134 HP |
| Engine RPM | 4000 RPM | 3400 RPM |
| Torque | 204 Nm | 336 Nm |
| Torque RPM | 2000 RPM | 1600 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1448 kg | 1855 kg |
| Vehicle Length | 4630 mm | 5480 mm |
| Vehicle Width | 1680 mm | 2010 mm |
| Vehicle Height | 1600 mm | 1340 mm |
| Wheelbase Size | 2840 mm | 2910 mm |
