1951 Alvis TB 21 vs. 2005 BMW 630
To start off, 2005 BMW 630 is newer by 54 year(s). Which means there will be less support and parts availability for 1951 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1951 Alvis TB 21 would be higher. At 2,999 cc (6 cylinders), 2005 BMW 630 is equipped with a bigger engine. In terms of performance, 2005 BMW 630 (254 HP @ 6600 RPM) has 163 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2005 BMW 630 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2005 BMW 630 (300 Nm) has 96 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2005 BMW 630 will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TB 21.
Compare all specifications:
| 1951 Alvis TB 21 | 2005 BMW 630 | |
| Make | Alvis | BMW |
| Model | TB 21 | 630 |
| Year Released | 1951 | 2005 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2999 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 254 HP |
| Engine RPM | 4000 RPM | 6600 RPM |
| Torque | 204 Nm | 300 Nm |
| Engine Bore Size | 84 mm | 85 mm |
| Engine Stroke Size | 90 mm | 88 mm |
| Engine Compression Ratio | 7.1:1 | 10.7:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Length | 4430 mm | 4830 mm |
| Vehicle Width | 1680 mm | 1860 mm |
| Wheelbase Size | 2750 mm | 2670 mm |
