1951 Alvis TB 21 vs. 2004 Mercedes-Benz Viano
To start off, 2004 Mercedes-Benz Viano is newer by 53 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, 2004 Mercedes-Benz Viano (148 HP @ 3800 RPM) has 57 more horse power than 1951 Alvis TB 21. (91 HP @ 4000 RPM) In normal driving conditions, 2004 Mercedes-Benz Viano should accelerate faster than 1951 Alvis TB 21.
Let's talk about torque, 2004 Mercedes-Benz Viano (330 Nm) has 126 more torque (in Nm) than 1951 Alvis TB 21. (204 Nm). This means 2004 Mercedes-Benz Viano 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 | 2004 Mercedes-Benz Viano | |
| Make | Alvis | Mercedes-Benz |
| Model | TB 21 | Viano |
| Year Released | 1951 | 2004 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2148 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 91 HP | 148 HP |
| Engine RPM | 4000 RPM | 3800 RPM |
| Torque | 204 Nm | 330 Nm |
| Engine Bore Size | 84 mm | 88 mm |
| Engine Stroke Size | 90 mm | 88.3 mm |
| Engine Compression Ratio | 7.1:1 | 18.0:1 |
| Fuel Type | Gasoline | Diesel |
| Vehicle Length | 4430 mm | 4750 mm |
| Vehicle Width | 1680 mm | 1910 mm |
| Wheelbase Size | 2750 mm | 3210 mm |
