2007 GMC Sierra vs. 2006 Kia Optima
To start off, 2007 GMC Sierra is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Kia Optima. In addition, the cost of maintenance, including insurance, on 2006 Kia Optima would be higher. At 4,802 cc (8 cylinders), 2007 GMC Sierra is equipped with a bigger engine. In terms of performance, 2007 GMC Sierra (295 HP @ 5600 RPM) has 157 more horse power than 2006 Kia Optima. (138 HP @ 5500 RPM). In normal driving conditions, 2007 GMC Sierra should accelerate faster than 2006 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2007 GMC Sierra weights approximately 317 kg more than 2006 Kia Optima. 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 2006 Kia Optima. 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 (414 Nm @ 4800 RPM) has 215 more torque (in Nm) than 2006 Kia Optima. (199 Nm @ 3000 RPM). This means 2007 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2006 Kia Optima. 2007 GMC Sierra has automatic transmission and 2006 Kia Optima has manual transmission. 2006 Kia Optima 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:
| 2007 GMC Sierra | 2006 Kia Optima | |
| Make | GMC | Kia |
| Model | Sierra | Optima |
| Year Released | 2007 | 2006 |
| Body Type | Pickup | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4802 cc | 2351 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 295 HP | 138 HP |
| Engine RPM | 5600 RPM | 5500 RPM |
| Torque | 414 Nm | 199 Nm |
| Torque RPM | 4800 RPM | 3000 RPM |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 3 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 2317 kg | 2000 kg |
| Vehicle Length | 5710 mm | 4730 mm |
| Vehicle Width | 2040 mm | 1820 mm |
| Vehicle Height | 1870 mm | 1420 mm |
| Wheelbase Size | 3380 mm | 2710 mm |
| Fuel Consumption Highway | 11.8 L/100km | 7.8 L/100km |
| Fuel Consumption City | 14.7 L/100km | 10.7 L/100km |
| Fuel Consumption Overall | 13.1 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 129 L | 65 L |
