2006 BMW X3 vs. 2005 Kia Optima
To start off, 2006 BMW X3 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Kia Optima. In addition, the cost of maintenance, including insurance, on 2005 Kia Optima would be higher. At 2,670 cc (6 cylinders), 2005 Kia Optima is equipped with a bigger engine. In terms of performance, 2005 Kia Optima (170 HP @ 4000 RPM) has 22 more horse power than 2006 BMW X3. (148 HP @ 4000 RPM) In normal driving conditions, 2005 Kia Optima should accelerate faster than 2006 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X3 weights approximately 438 kg more than 2005 Kia Optima.
Because 2006 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Kia Optima. In wet, icy, snow, or gravel driving conditions, 2006 BMW X3 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, 2006 BMW X3 (330 Nm) has 85 more torque (in Nm) than 2005 Kia Optima. (245 Nm). This means 2006 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2005 Kia Optima.
Compare all specifications:
| 2006 BMW X3 | 2005 Kia Optima | |
| Make | BMW | Kia |
| Model | X3 | Optima |
| Year Released | 2006 | 2005 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 2670 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 170 HP |
| Engine RPM | 4000 RPM | 4000 RPM |
| Torque | 330 Nm | 245 Nm |
| Engine Compression Ratio | 17.0:1 | 10.0:1 |
| Drive Type | 4WD | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1925 kg | 1487 kg |
| Vehicle Length | 4570 mm | 4730 mm |
| Vehicle Width | 1860 mm | 1820 mm |
| Vehicle Height | 1680 mm | 1420 mm |
| Wheelbase Size | 2800 mm | 2640 mm |
| Fuel Consumption Overall | 7.2 L/100km | 10.2 L/100km |
| Fuel Tank Capacity | 67 L | 65 L |
