1951 Alvis TA 21 vs. 1984 Ford Sierra
To start off, 1984 Ford Sierra is newer by 33 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. At 2,993 cc (6 cylinders), 1951 Alvis TA 21 is equipped with a bigger engine. In terms of performance, 1951 Alvis TA 21 (93 HP @ 4000 RPM) has 34 more horse power than 1984 Ford Sierra. (59 HP @ 5700 RPM). In normal driving conditions, 1951 Alvis TA 21 should accelerate faster than 1984 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1951 Alvis TA 21 weights approximately 478 kg more than 1984 Ford Sierra. 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, 1951 Alvis TA 21 (204 Nm @ 2000 RPM) has 106 more torque (in Nm) than 1984 Ford Sierra. (98 Nm @ 3100 RPM). This means 1951 Alvis TA 21 will have an easier job in driving up hills or pulling heavy equipment than 1984 Ford Sierra.
Compare all specifications:
| 1951 Alvis TA 21 | 1984 Ford Sierra | |
| Make | Alvis | Ford |
| Model | TA 21 | Sierra |
| Year Released | 1951 | 1984 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 1294 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 93 HP | 59 HP |
| Engine RPM | 4000 RPM | 5700 RPM |
| Torque | 204 Nm | 98 Nm |
| Torque RPM | 2000 RPM | 3100 RPM |
| Engine Bore Size | 84 mm | 79.1 mm |
| Engine Stroke Size | 90 mm | 66 mm |
| Engine Compression Ratio | 7.1:1 | 9.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 3 doors |
| Vehicle Weight | 1448 kg | 970 kg |
| Vehicle Length | 4630 mm | 4400 mm |
| Vehicle Width | 1680 mm | 1710 mm |
| Vehicle Height | 1600 mm | 1420 mm |
| Wheelbase Size | 2840 mm | 2610 mm |
| Fuel Tank Capacity | 64 L | 60 L |
