1951 Alvis TA 21 vs. 2007 BMW X5
To start off, 2007 BMW X5 is newer by 56 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 2007 BMW X5 are equipped with a 2,993 cc engine. In terms of performance, 2007 BMW X5 (202 HP @ 4000 RPM) has 109 more horse power than 1951 Alvis TA 21. (93 HP @ 4000 RPM) In normal driving conditions, 2007 BMW X5 should accelerate faster than 1951 Alvis TA 21. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X5 weights approximately 707 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.
Because 2007 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1951 Alvis TA 21. In wet, icy, snow, or gravel driving conditions, 2007 BMW X5 will offer significantly more control. 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, 2007 BMW X5 (480 Nm @ 2000 RPM) has 276 more torque (in Nm) than 1951 Alvis TA 21. (204 Nm @ 2000 RPM). This means 2007 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1951 Alvis TA 21. 2007 BMW X5 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. 2007 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1951 Alvis TA 21 | 2007 BMW X5 | |
| Make | Alvis | BMW |
| Model | TA 21 | X5 |
| Year Released | 1951 | 2007 |
| 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 | 202 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 204 Nm | 480 Nm |
| Torque RPM | 2000 RPM | 2000 RPM |
| Engine Bore Size | 84 mm | 84 mm |
| Engine Stroke Size | 90 mm | 88 mm |
| Engine Compression Ratio | 7.1:1 | 18.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1448 kg | 2155 kg |
| Vehicle Length | 4630 mm | 4670 mm |
| Vehicle Width | 1680 mm | 1880 mm |
| Vehicle Height | 1600 mm | 1720 mm |
| Wheelbase Size | 2840 mm | 2830 mm |
| Fuel Tank Capacity | 64 L | 93 L |
