1951 Alvis TA 21 vs. 1976 BMW 630
To start off, 1976 BMW 630 is newer by 25 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, 1976 BMW 630 (173 HP @ 5500 RPM) has 80 more horse power than 1951 Alvis TA 21. (93 HP @ 4000 RPM) In normal driving conditions, 1976 BMW 630 should accelerate faster than 1951 Alvis TA 21. With that said, vehicle weight also plays an important factor in acceleration. 1976 BMW 630 weights approximately 10 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, 1976 BMW 630 (251 Nm @ 4500 RPM) has 47 more torque (in Nm) than 1951 Alvis TA 21. (204 Nm @ 2000 RPM). This means 1976 BMW 630 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 | 1976 BMW 630 | |
| Make | Alvis | BMW |
| Model | TA 21 | 630 |
| Year Released | 1951 | 1976 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2986 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 93 HP | 173 HP |
| Engine RPM | 4000 RPM | 5500 RPM |
| Torque | 204 Nm | 251 Nm |
| Torque RPM | 2000 RPM | 4500 RPM |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 90 mm | 80 mm |
| Engine Compression Ratio | 7.1:1 | 8.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1448 kg | 1458 kg |
| Vehicle Length | 4630 mm | 4760 mm |
| Vehicle Width | 1680 mm | 1760 mm |
| Vehicle Height | 1600 mm | 1390 mm |
| Wheelbase Size | 2840 mm | 2630 mm |
