1964 Alfa Romeo Spider vs. 1950 Alvis TA 21
To start off, 1964 Alfa Romeo Spider is newer by 14 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, 1964 Alfa Romeo Spider (163 HP @ 5900 RPM) has 70 more horse power than 1950 Alvis TA 21. (93 HP @ 4000 RPM). In normal driving conditions, 1964 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 118 kg more than 1964 Alfa Romeo Spider.
Let's talk about torque, 1964 Alfa Romeo Spider (221 Nm @ 4000 RPM) has 17 more torque (in Nm) than 1950 Alvis TA 21. (204 Nm @ 2000 RPM). This means 1964 Alfa Romeo Spider will have an easier job in driving up hills or pulling heavy equipment than 1950 Alvis TA 21.
Compare all specifications:
| 1964 Alfa Romeo Spider | 1950 Alvis TA 21 | |
| Make | Alfa Romeo | Alvis |
| Model | Spider | TA 21 |
| Year Released | 1964 | 1950 |
| Engine Position | Front | Front |
| Engine Size | 2582 cc | 2991 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 163 HP | 93 HP |
| Engine RPM | 5900 RPM | 4000 RPM |
| Torque | 221 Nm | 204 Nm |
| Torque RPM | 4000 RPM | 2000 RPM |
| Engine Bore Size | 83 mm | 84 mm |
| Engine Stroke Size | 79.6 mm | 90 mm |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1330 kg | 1448 kg |
| Vehicle Length | 4510 mm | 4630 mm |
| Vehicle Width | 1610 mm | 1680 mm |
| Vehicle Height | 1390 mm | 1600 mm |
| Wheelbase Size | 2510 mm | 2840 mm |
| Fuel Tank Capacity | 100 L | 64 L |
