1951 Alvis TB 21 vs. 2006 Mazda RX-8
To start off, 2006 Mazda RX-8 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 2,993 cc (6 cylinders), 1951 Alvis TB 21 is equipped with a bigger engine. In terms of performance, 2006 Mazda RX-8 (190 HP @ 7000 RPM) has 99 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2006 Mazda RX-8 should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2006 Mazda RX-8 (220 Nm) has 16 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2006 Mazda RX-8 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 Mazda RX-8 | |
| Make | Alvis | Mazda |
| Model | TB 21 | RX-8 |
| Year Released | 1951 | 2006 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1308 cc |
| Engine Type | in-line | dual-disk rotary |
| Horse Power | 91 HP | 190 HP |
| Engine RPM | 4000 RPM | 7000 RPM |
| Torque | 204 Nm | 220 Nm |
| Engine Bore Size | 84 mm | 83 mm |
| Engine Stroke Size | 90 mm | 83.1 mm |
| Engine Compression Ratio | 7.1:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Number of Seats | 5 seats | 4 seats |
| Vehicle Length | 4430 mm | 4440 mm |
| Vehicle Width | 1680 mm | 1780 mm |
| Wheelbase Size | 2750 mm | 2710 mm |
