1971 Alfa Romeo Spider vs. 1950 Alvis TA 21
To start off, 1971 Alfa Romeo Spider is newer by 21 year(s). Which means there will be less support and parts availability for 1950 Alvis TA 21. In addition, the cost of maintenance, including insurance, on 1950 Alvis TA 21 would be higher. At 2,991 cc (6 cylinders), 1950 Alvis TA 21 is equipped with a bigger engine. In terms of performance, 1971 Alfa Romeo Spider (131 HP @ 5500 RPM) has 38 more horse power than 1950 Alvis TA 21. (93 HP @ 4000 RPM). In normal driving conditions, 1971 Alfa Romeo Spider should accelerate faster than 1950 Alvis TA 21. With that said, vehicle weight also plays an important factor in acceleration. 1950 Alvis TA 21 weights approximately 408 kg more than 1971 Alfa Romeo Spider.
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, 1950 Alvis TA 21 (204 Nm @ 2000 RPM) has 14 more torque (in Nm) than 1971 Alfa Romeo Spider. (190 Nm @ 3500 RPM). This means 1950 Alvis TA 21 will have an easier job in driving up hills or pulling heavy equipment than 1971 Alfa Romeo Spider.
Compare all specifications:
| 1971 Alfa Romeo Spider | 1950 Alvis TA 21 | |
| Make | Alfa Romeo | Alvis |
| Model | Spider | TA 21 |
| Year Released | 1971 | 1950 |
| Engine Position | Front | Front |
| Engine Size | 1962 cc | 2991 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 131 HP | 93 HP |
| Engine RPM | 5500 RPM | 4000 RPM |
| Torque | 190 Nm | 204 Nm |
| Torque RPM | 3500 RPM | 2000 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 88.5 mm | 90 mm |
| Engine Compression Ratio | 9.0:1 | 7.1:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1040 kg | 1448 kg |
| Vehicle Length | 4130 mm | 4630 mm |
| Vehicle Width | 1640 mm | 1680 mm |
| Vehicle Height | 1300 mm | 1600 mm |
| Wheelbase Size | 2260 mm | 2840 mm |
