1991 Alfa Romeo SZ vs. 1954 Alvis TC 21
To start off, 1991 Alfa Romeo SZ is newer by 37 year(s). Which means there will be less support and parts availability for 1954 Alvis TC 21. In addition, the cost of maintenance, including insurance, on 1954 Alvis TC 21 would be higher. At 2,993 cc (6 cylinders), 1954 Alvis TC 21 is equipped with a bigger engine. In terms of performance, 1991 Alfa Romeo SZ (208 HP @ 6200 RPM) has 108 more horse power than 1954 Alvis TC 21. (100 HP @ 4000 RPM). In normal driving conditions, 1991 Alfa Romeo SZ should accelerate faster than 1954 Alvis TC 21. With that said, vehicle weight also plays an important factor in acceleration. 1954 Alvis TC 21 weights approximately 180 kg more than 1991 Alfa Romeo SZ.
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, 1991 Alfa Romeo SZ (245 Nm @ 4500 RPM) has 24 more torque (in Nm) than 1954 Alvis TC 21. (221 Nm @ 2000 RPM). This means 1991 Alfa Romeo SZ will have an easier job in driving up hills or pulling heavy equipment than 1954 Alvis TC 21.
Compare all specifications:
| 1991 Alfa Romeo SZ | 1954 Alvis TC 21 | |
| Make | Alfa Romeo | Alvis |
| Model | SZ | TC 21 |
| Year Released | 1991 | 1954 |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 2993 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 208 HP | 100 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 245 Nm | 221 Nm |
| Torque RPM | 4500 RPM | 2000 RPM |
| Engine Bore Size | 93 mm | 84 mm |
| Engine Stroke Size | 72.6 mm | 90 mm |
| Engine Compression Ratio | 10.0:1 | 8.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 233 km/hour | 160 km/hour |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1260 kg | 1440 kg |
| Vehicle Length | 4670 mm | 4630 mm |
| Vehicle Width | 1740 mm | 1680 mm |
| Vehicle Height | 1320 mm | 1580 mm |
| Wheelbase Size | 2520 mm | 2840 mm |
| Fuel Tank Capacity | 50 L | 64 L |
