1952 Alvis TB 21 vs. 2007 BMW 523
To start off, 2007 BMW 523 is newer by 55 year(s). Which means there will be less support and parts availability for 1952 Alvis TB 21. In addition, the cost of maintenance, including insurance, on 1952 Alvis TB 21 would be higher. At 2,992 cc (6 cylinders), 1952 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 2007 BMW 523 (175 HP @ 5800 RPM) has 84 more horse power than 1952 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2007 BMW 523 should accelerate faster than 1952 Alvis TB 21.
Let's talk about torque, 2007 BMW 523 (230 Nm @ 3500 RPM) has 26 more torque (in Nm) than 1952 Alvis TB 21. (204 Nm @ 2200 RPM). This means 2007 BMW 523 will have an easier job in driving up hills or pulling heavy equipment than 1952 Alvis TB 21.
Compare all specifications:
| 1952 Alvis TB 21 | 2007 BMW 523 | |
| Make | Alvis | BMW |
| Model | TB 21 | 523 |
| Year Released | 1952 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2992 cc | 2497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 175 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 204 Nm | 230 Nm |
| Torque RPM | 2200 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 82.1 mm |
| Engine Stroke Size | 90 mm | 78.8 mm |
| Engine Compression Ratio | 7.1:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Width | 1680 mm | 1470 mm |
| Wheelbase Size | 2750 mm | 2890 mm |
