2003 GMC Sierra vs. 2005 Kia Optima
To start off, 2005 Kia Optima is newer by 2 year(s). Which means there will be less support and parts availability for 2003 GMC Sierra. In addition, the cost of maintenance, including insurance, on 2003 GMC Sierra would be higher. At 4,816 cc (8 cylinders), 2003 GMC Sierra is equipped with a bigger engine. In terms of performance, 2003 GMC Sierra (275 HP) has 105 more horse power than 2005 Kia Optima. (170 HP). In normal driving conditions, 2003 GMC Sierra should accelerate faster than 2005 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2003 GMC Sierra weights approximately 458 kg more than 2005 Kia Optima. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 GMC Sierra is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2003 GMC Sierra. However, in wet, icy, snow, or gravel driving conditions, 2005 Kia Optima, being front wheel drive (FWD), will offer much better control with better grip. 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, 2003 GMC Sierra (386 Nm) has 141 more torque (in Nm) than 2005 Kia Optima. (245 Nm). This means 2003 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 2005 Kia Optima.
Compare all specifications:
| 2003 GMC Sierra | 2005 Kia Optima | |
| Make | GMC | Kia |
| Model | Sierra | Optima |
| Year Released | 2003 | 2005 |
| Body Type | Pickup | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4816 cc | 2670 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 275 HP | 170 HP |
| Torque | 386 Nm | 245 Nm |
| Drive Type | Rear | Front |
| Number of Seats | 3 seats | 5 seats |
| Vehicle Weight | 1945 kg | 1487 kg |
| Vehicle Length | 5650 mm | 4730 mm |
| Vehicle Width | 2000 mm | 1820 mm |
| Vehicle Height | 1810 mm | 1420 mm |
| Wheelbase Size | 3380 mm | 2640 mm |
