2008 GMC Sierra vs. 2013 BMW 6 series
To start off, 2013 BMW 6 series is newer by 5 year(s). Which means there will be less support and parts availability for 2008 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2008 GMC Sierra would be higher. At 5,999 cc (8 cylinders), 2008 GMC Sierra is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series (437 HP @ 5500 RPM) has 84 more horse power than 2008 GMC Sierra. (353 HP @ 5400 RPM) In normal driving conditions, 2013 BMW 6 series should accelerate faster than 2008 GMC Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2008 GMC Sierra weights approximately 52 kg more than 2013 BMW 6 series.
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, 2013 BMW 6 series (649 Nm @ 4500 RPM) has 143 more torque (in Nm) than 2008 GMC Sierra. (506 Nm @ 4400 RPM). This means 2013 BMW 6 series will have an easier job in driving up hills or pulling heavy equipment than 2008 GMC Sierra.
Compare all specifications:
| 2008 GMC Sierra | 2013 BMW 6 series | |
| Make | GMC | BMW |
| Model | Sierra | 6 series |
| Year Released | 2008 | 2013 |
| Body Type | Pickup | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5999 cc | 4395 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 353 HP | 437 HP |
| Engine RPM | 5400 RPM | 5500 RPM |
| Torque | 506 Nm | 649 Nm |
| Torque RPM | 4400 RPM | 4500 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | 8-speed automatic |
| Number of Seats | 6 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 2141 kg | 2089 kg |
| Vehicle Length | 6580 mm | 5009 mm |
| Vehicle Width | 2040 mm | 2081 mm |
| Vehicle Height | 1960 mm | 1392 mm |
| Wheelbase Size | 4250 mm | 2968 mm |
| Fuel Tank Capacity | 129 L | 70 L |
