1951 Alvis TB 21 vs. 2009 Hummer H3
To start off, 2009 Hummer H3 is newer by 58 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 3,653 cc (5 cylinders), 2009 Hummer H3 is equipped with a bigger engine. In terms of performance, 2009 Hummer H3 (239 HP @ 5800 RPM) has 148 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2009 Hummer H3 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2009 Hummer H3 (327 Nm) has 123 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2009 Hummer H3 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 | 2009 Hummer H3 | |
| Make | Alvis | Hummer |
| Model | TB 21 | H3 |
| Year Released | 1951 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 3653 cc |
| Engine Cylinders | 6 cylinders | 5 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 239 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 204 Nm | 327 Nm |
| Engine Bore Size | 84 mm | 95.5 mm |
| Engine Stroke Size | 90 mm | 102 mm |
| Engine Compression Ratio | 7.1:1 | 9.9:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4770 mm |
| Vehicle Width | 1680 mm | 2170 mm |
| Wheelbase Size | 2750 mm | 2850 mm |
