1999 GMC Sierra vs. 2011 Porsche 911
To start off, 2011 Porsche 911 is newer by 12 year(s). Which means there will be less support and parts availability for 1999 GMC Sierra. In addition, the cost of maintenance, including insurance, on 1999 GMC Sierra would be higher. At 4,784 cc (6 cylinders), 1999 GMC Sierra is equipped with a bigger engine. In terms of performance, 2011 Porsche 911 (385 HP @ 6500 RPM) has 118 more horse power than 1999 GMC Sierra. (267 HP @ 5200 RPM) In normal driving conditions, 2011 Porsche 911 should accelerate faster than 1999 GMC Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1999 GMC Sierra weights approximately 300 kg more than 2011 Porsche 911.
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 (420 Nm @ 4400 RPM) has 34 more torque (in Nm) than 1999 GMC Sierra. (386 Nm @ 4000 RPM). This means 2011 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1999 GMC Sierra.
Compare all specifications:
| 1999 GMC Sierra | 2011 Porsche 911 | |
| Make | GMC | Porsche |
| Model | Sierra | 911 |
| Year Released | 1999 | 2011 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 4784 cc | 3800 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 267 HP | 385 HP |
| Engine RPM | 5200 RPM | 6500 RPM |
| Torque | 386 Nm | 420 Nm |
| Torque RPM | 4000 RPM | 4400 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Manual | Manual |
| Vehicle Weight | 1805 kg | 1505 kg |
| Vehicle Length | 5170 mm | 4460 mm |
| Vehicle Width | 2000 mm | 1852 mm |
| Vehicle Height | 1810 mm | 1300 mm |
| Wheelbase Size | 3030 mm | 2350 mm |
