1951 Alvis TB 21 vs. 2009 Mazda 3
To start off, 2009 Mazda 3 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 2,993 cc (6 cylinders), 1951 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 2009 Mazda 3 (145 HP @ 6500 RPM) has 54 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2009 Mazda 3 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 1951 Alvis TB 21 (204 Nm) has 23 more torque (in Nm) than 2009 Mazda 3. (181 Nm). This means 1951 Alvis TB 21 will have an easier job in driving up hills or pulling heavy equipment than 2009 Mazda 3.
Compare all specifications:
| 1951 Alvis TB 21 | 2009 Mazda 3 | |
| Make | Alvis | Mazda |
| Model | TB 21 | 3 |
| Year Released | 1951 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1998 cc |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 145 HP |
| Engine RPM | 4000 RPM | 6500 RPM |
| Torque | 204 Nm | 181 Nm |
| Engine Bore Size | 84 mm | 87.5 mm |
| Engine Stroke Size | 90 mm | 83.1 mm |
| Engine Compression Ratio | 7.1:1 | 10.0:1 |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Length | 4430 mm | 4500 mm |
| Vehicle Width | 1680 mm | 1760 mm |
| Wheelbase Size | 2750 mm | 2650 mm |
