1951 Alvis TB 21 vs. 2006 BMW 645
To start off, 2006 BMW 645 is newer by 55 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 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 237 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2006 BMW 645 (450 Nm) has 246 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2006 BMW 645 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 | 2006 BMW 645 | |
Make | Alvis | BMW |
Model | TB 21 | 645 |
Year Released | 1951 | 2006 |
Engine Position | Front | Front |
Engine Size | 2993 cc | 4398 cc |
Engine Cylinders | 6 cylinders | 8 cylinders |
Engine Type | in-line | V |
Valves per Cylinder | 2 valves | 2 valves |
Horse Power | 91 HP | 328 HP |
Engine RPM | 4000 RPM | 6100 RPM |
Torque | 204 Nm | 450 Nm |
Engine Bore Size | 84 mm | 92 mm |
Engine Stroke Size | 90 mm | 83 mm |
Engine Compression Ratio | 7.1:1 | 10.0:1 |
Fuel Type | Gasoline | Gasoline |
Number of Seats | 5 seats | 4 seats |
Vehicle Length | 4430 mm | 4830 mm |
Vehicle Width | 1680 mm | 1860 mm |
Wheelbase Size | 2750 mm | 2790 mm |