2004 Kia Optima vs. 2007 Mazda 6
To start off, 2007 Mazda 6 is newer by 3 year(s). Which means there will be less support and parts availability for 2004 Kia Optima. In addition, the cost of maintenance, including insurance, on 2004 Kia Optima would be higher. At 2,966 cc (6 cylinders), 2007 Mazda 6 is equipped with a bigger engine. In terms of performance, 2007 Mazda 6 (212 HP @ 6000 RPM) has 75 more horse power than 2004 Kia Optima. (137 HP @ 4000 RPM) In normal driving conditions, 2007 Mazda 6 should accelerate faster than 2004 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2004 Kia Optima weights approximately 368 kg more than 2007 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, 2007 Mazda 6 (267 Nm) has 68 more torque (in Nm) than 2004 Kia Optima. (199 Nm). This means 2007 Mazda 6 will have an easier job in driving up hills or pulling heavy equipment than 2004 Kia Optima.
Compare all specifications:
| 2004 Kia Optima | 2007 Mazda 6 | |
| Make | Kia | Mazda |
| Model | Optima | 6 |
| Year Released | 2004 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2360 cc | 2966 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 137 HP | 212 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 199 Nm | 267 Nm |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1488 kg | 1120 kg |
| Vehicle Length | 4730 mm | 4750 mm |
| Vehicle Width | 1820 mm | 1790 mm |
| Vehicle Height | 1420 mm | 1450 mm |
| Wheelbase Size | 2710 mm | 2680 mm |
| Fuel Consumption | 7.8 L/100km | 8.7 L/100km |
| Fuel Consumption City | 10.2 L/100km | 12.4 L/100km |
| Fuel Consumption Overall | 9.4 L/100km | 10.7 L/100km |
| Fuel Tank Capacity | 65 L | 68 L |
