1955 Alvis TC 21 vs. 2011 Porsche 911
To start off, 2011 Porsche 911 is newer by 56 year(s). Which means there will be less support and parts availability for 1955 Alvis TC 21. In addition, the cost of maintenance, including insurance, on 1955 Alvis TC 21 would be higher. At 3,800 cc (6 cylinders), 2011 Porsche 911 is equipped with a bigger engine. In terms of performance, 2011 Porsche 911 (530 HP @ 6250 RPM) has 425 more horse power than 1955 Alvis TC 21. (105 HP @ 4000 RPM) In normal driving conditions, 2011 Porsche 911 should accelerate faster than 1955 Alvis TC 21. With that said, vehicle weight also plays an important factor in acceleration. 2011 Porsche 911 weights approximately 210 kg more than 1955 Alvis TC 21. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 Porsche 911 is all wheel drive (AWD), it will have significant more traction and grip than 1955 Alvis TC 21. In wet, icy, snow, or gravel driving conditions, 2011 Porsche 911 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, 2011 Porsche 911 (699 Nm @ 2100 RPM) has 478 more torque (in Nm) than 1955 Alvis TC 21. (221 Nm @ 2500 RPM). This means 2011 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1955 Alvis TC 21.
Compare all specifications:
| 1955 Alvis TC 21 | 2011 Porsche 911 | |
| Make | Alvis | Porsche |
| Model | TC 21 | 911 |
| Year Released | 1955 | 2011 |
| Engine Position | Front | Rear |
| Engine Size | 2993 cc | 3800 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 105 HP | 530 HP |
| Engine RPM | 4000 RPM | 6250 RPM |
| Torque | 221 Nm | 699 Nm |
| Torque RPM | 2500 RPM | 2100 RPM |
| Drive Type | Rear | AWD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1450 kg | 1660 kg |
| Vehicle Length | 4810 mm | 4478 mm |
| Vehicle Width | 1680 mm | 1852 mm |
| Vehicle Height | 1590 mm | 1300 mm |
| Wheelbase Size | 2840 mm | 2350 mm |
