2006 Kia Optima vs. 2008 Mazda 6
To start off, 2008 Mazda 6 is newer by 2 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 2,488 cc (4 cylinders), 2008 Mazda 6 is equipped with a bigger engine. In terms of performance, 2008 Mazda 6 (168 HP @ 6000 RPM) has 30 more horse power than 2006 Kia Optima. (138 HP @ 5500 RPM) In normal driving conditions, 2008 Mazda 6 should accelerate faster than 2006 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2006 Kia Optima weights approximately 605 kg more than 2008 Mazda 6.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2008 Mazda 6 (226 Nm @ 4000 RPM) has 27 more torque (in Nm) than 2006 Kia Optima. (199 Nm @ 3000 RPM). This means 2008 Mazda 6 will have an easier job in driving up hills or pulling heavy equipment than 2006 Kia Optima.
Compare all specifications:
| 2006 Kia Optima | 2008 Mazda 6 | |
| Make | Kia | Mazda |
| Model | Optima | 6 |
| Year Released | 2006 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2351 cc | 2488 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 168 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 199 Nm | 226 Nm |
| Torque RPM | 3000 RPM | 4000 RPM |
| Engine Bore Size | 86.5 mm | 89 mm |
| Engine Stroke Size | 100 mm | 100 mm |
| Engine Compression Ratio | 10.0:1 | 9.7:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 2000 kg | 1395 kg |
| Vehicle Length | 4730 mm | 4760 mm |
| Vehicle Width | 1820 mm | 1800 mm |
| Vehicle Height | 1420 mm | 1450 mm |
| Wheelbase Size | 2710 mm | 2730 mm |
| Fuel Consumption Overall | 9.4 L/100km | 8.3 L/100km |
| Fuel Tank Capacity | 65 L | 64 L |
