1951 Alvis TA 21 vs. 1963 Porsche 804
To start off, 1963 Porsche 804 is newer by 12 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 2,993 cc (6 cylinders), 1951 Alvis TA 21 is equipped with a bigger engine. In terms of performance, 1963 Porsche 804 (182 HP @ 9300 RPM) has 89 more horse power than 1951 Alvis TA 21. (93 HP @ 4000 RPM) In normal driving conditions, 1963 Porsche 804 should accelerate faster than 1951 Alvis TA 21. With that said, vehicle weight also plays an important factor in acceleration. 1951 Alvis TA 21 weights approximately 986 kg more than 1963 Porsche 804.
Compare all specifications:
| 1951 Alvis TA 21 | 1963 Porsche 804 | |
| Make | Alvis | Porsche |
| Model | TA 21 | 804 |
| Year Released | 1951 | 1963 |
| Engine Size | 2993 cc | 1494 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 93 HP | 182 HP |
| Engine RPM | 4000 RPM | 9300 RPM |
| Fuel Type | Gasoline | Gasoline |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1448 kg | 462 kg |
| Vehicle Length | 4630 mm | 3960 mm |
| Vehicle Height | 1600 mm | 1320 mm |
| Wheelbase Size | 2840 mm | 2110 mm |
| Fuel Tank Capacity | 64 L | 73 L |
