1951 Alvis TB 21 vs. 2007 BMW M5
To start off, 2007 BMW M5 is newer by 56 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 4,998 cc (10 cylinders), 2007 BMW M5 is equipped with a bigger engine. In terms of performance, 2007 BMW M5 (500 HP @ 7750 RPM) has 409 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2007 BMW M5 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2007 BMW M5 (520 Nm) has 316 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2007 BMW M5 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 | 2007 BMW M5 | |
| Make | Alvis | BMW |
| Model | TB 21 | M5 |
| Year Released | 1951 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 4998 cc |
| Engine Cylinders | 6 cylinders | 10 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 500 HP |
| Engine RPM | 4000 RPM | 7750 RPM |
| Torque | 204 Nm | 520 Nm |
| Engine Bore Size | 84 mm | 92 mm |
| Engine Stroke Size | 90 mm | 75.2 mm |
| Engine Compression Ratio | 7.1:1 | 12.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4860 mm |
| Vehicle Width | 1680 mm | 1850 mm |
| Wheelbase Size | 2750 mm | 2900 mm |
