2007 GMC Sierra vs. 1975 Mercury Comet
To start off, 2007 GMC Sierra is newer by 32 year(s). Which means there will be less support and parts availability for 1975 Mercury Comet. In addition, the cost of maintenance, including insurance, on 1975 Mercury Comet 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 279 more horse power than 1975 Mercury Comet. (74 HP @ 3200 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 1975 Mercury Comet. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 1358 kg more than 1975 Mercury Comet. 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 1975 Mercury Comet. 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 309 more torque (in Nm) than 1975 Mercury Comet. (197 Nm @ 2000 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1975 Mercury Comet.
Compare all specifications:
| 2007 GMC Sierra | 1975 Mercury Comet | |
| Make | GMC | Mercury |
| Model | Sierra | Comet |
| Year Released | 2007 | 1975 |
| Engine Position | Front | Front |
| Engine Size | 5999 cc | 3272 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 353 HP | 74 HP |
| Engine RPM | 5400 RPM | 3200 RPM |
| Torque | 506 Nm | 197 Nm |
| Torque RPM | 4400 RPM | 2000 RPM |
| Drive Type | 4WD | Rear |
| Number of Seats | 6 seats | 5 seats |
| Vehicle Weight | 2788 kg | 1430 kg |
| Vehicle Length | 6340 mm | 5000 mm |
| Vehicle Width | 2040 mm | 1800 mm |
| Vehicle Height | 1950 mm | 1360 mm |
| Wheelbase Size | 4010 mm | 2800 mm |
