1950 Alvis TA 21 vs. 1991 Ford Sierra
To start off, 1991 Ford Sierra is newer by 41 year(s). Which means there will be less support and parts availability for 1950 Alvis TA 21. In addition, the cost of maintenance, including insurance, on 1950 Alvis TA 21 would be higher. At 2,991 cc (6 cylinders), 1950 Alvis TA 21 is equipped with a bigger engine. In terms of performance, 1950 Alvis TA 21 (93 HP @ 4000 RPM) has 18 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM). In normal driving conditions, 1950 Alvis TA 21 should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1950 Alvis TA 21 weights approximately 303 kg more than 1991 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1950 Alvis TA 21 (204 Nm @ 2000 RPM) has 52 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 1950 Alvis TA 21 will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 1950 Alvis TA 21 | 1991 Ford Sierra | |
| Make | Alvis | Ford |
| Model | TA 21 | Sierra |
| Year Released | 1950 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 2991 cc | 1751 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 93 HP | 75 HP |
| Engine RPM | 4000 RPM | 4500 RPM |
| Torque | 204 Nm | 152 Nm |
| Torque RPM | 2000 RPM | 2200 RPM |
| Engine Bore Size | 84 mm | 82.5 mm |
| Engine Stroke Size | 90 mm | 82 mm |
| Engine Compression Ratio | 7.1:1 | 21.5:1 |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1448 kg | 1145 kg |
| Vehicle Length | 4630 mm | 4430 mm |
| Vehicle Width | 1680 mm | 1700 mm |
| Vehicle Height | 1600 mm | 1370 mm |
| Wheelbase Size | 2840 mm | 2620 mm |
| Fuel Tank Capacity | 64 L | 60 L |
