1951 Alvis TA 21 vs. 2012 BMW 640
To start off, 2012 BMW 640 is newer by 61 year(s). Which means there will be less support and parts availability for 1951 Alvis TA 21. In addition, the cost of maintenance, including insurance, on 1951 Alvis TA 21 would be higher. Both 1951 Alvis TA 21 and 2012 BMW 640 are equipped with a 2,993 cc engine. In terms of performance, 2012 BMW 640 (311 HP @ 4400 RPM) has 218 more horse power than 1951 Alvis TA 21. (93 HP @ 4000 RPM) In normal driving conditions, 2012 BMW 640 should accelerate faster than 1951 Alvis TA 21. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW 640 weights approximately 417 kg more than 1951 Alvis TA 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2012 BMW 640 (630 Nm @ 1500 RPM) has 426 more torque (in Nm) than 1951 Alvis TA 21. (204 Nm @ 2000 RPM). This means 2012 BMW 640 will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TA 21. 2012 BMW 640 has automatic transmission and 1951 Alvis TA 21 has manual transmission. 1951 Alvis TA 21 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2012 BMW 640 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1951 Alvis TA 21 | 2012 BMW 640 | |
| Make | Alvis | BMW |
| Model | TA 21 | 640 |
| Year Released | 1951 | 2012 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 93 HP | 311 HP |
| Engine RPM | 4000 RPM | 4400 RPM |
| Torque | 204 Nm | 630 Nm |
| Torque RPM | 2000 RPM | 1500 RPM |
| Engine Bore Size | 84 mm | 90 mm |
| Engine Stroke Size | 90 mm | 84 mm |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | 8-speed shiftable automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1448 kg | 1865 kg |
| Vehicle Length | 4630 mm | 5007 mm |
| Vehicle Width | 1680 mm | 1894 mm |
| Vehicle Height | 1600 mm | 1392 mm |
| Wheelbase Size | 2840 mm | 2968 mm |
| Fuel Tank Capacity | 64 L | 70 L |
