1955 Alvis TC 21 vs. 2007 GMC Sierra
To start off, 2007 GMC Sierra is newer by 52 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 5,999 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (353 HP @ 5400 RPM) has 248 more horse power than 1955 Alvis TC 21. (105 HP @ 4000 RPM) In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1955 Alvis TC 21. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 1338 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 2007 GMC Sierra is four wheel drive (4WD), it will have significant more traction and grip than 1955 Alvis TC 21. In wet, icy, snow, or gravel driving conditions, 2007 GMC Sierra 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 GMC Sierra (506 Nm @ 4400 RPM) has 285 more torque (in Nm) than 1955 Alvis TC 21. (221 Nm @ 2500 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1955 Alvis TC 21. 2007 GMC Sierra has automatic transmission and 1955 Alvis TC 21 has manual transmission. 1955 Alvis TC 21 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 GMC Sierra will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1955 Alvis TC 21 | 2007 GMC Sierra | |
| Make | Alvis | GMC |
| Model | TC 21 | Sierra |
| Year Released | 1955 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 5999 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 2 valves |
| Horse Power | 105 HP | 353 HP |
| Engine RPM | 4000 RPM | 5400 RPM |
| Torque | 221 Nm | 506 Nm |
| Torque RPM | 2500 RPM | 4400 RPM |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1450 kg | 2788 kg |
| Vehicle Length | 4810 mm | 6340 mm |
| Vehicle Width | 1680 mm | 2040 mm |
| Vehicle Height | 1590 mm | 1950 mm |
| Wheelbase Size | 2840 mm | 4010 mm |
