2009 Ford Flex vs. 2004 Kia Optima
To start off, 2009 Ford Flex is newer by 5 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 3,496 cc (6 cylinders), 2009 Ford Flex is equipped with a bigger engine. In terms of performance, 2009 Ford Flex (262 HP @ 6250 RPM) has 125 more horse power than 2004 Kia Optima. (137 HP @ 4000 RPM). In normal driving conditions, 2009 Ford Flex should accelerate faster than 2004 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2004 Kia Optima weights approximately 522 kg more than 2009 Ford Flex.
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, 2009 Ford Flex (336 Nm) has 137 more torque (in Nm) than 2004 Kia Optima. (199 Nm). This means 2009 Ford Flex will have an easier job in driving up hills or pulling heavy equipment than 2004 Kia Optima.
Compare all specifications:
| 2009 Ford Flex | 2004 Kia Optima | |
| Make | Ford | Kia |
| Model | Flex | Optima |
| Year Released | 2009 | 2004 |
| Body Type | Crossover | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3496 cc | 2360 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 262 HP | 137 HP |
| Engine RPM | 6250 RPM | 4000 RPM |
| Torque | 336 Nm | 199 Nm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Drive Type | Front | Front |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 966 kg | 1488 kg |
| Vehicle Length | 5130 mm | 4730 mm |
| Vehicle Width | 1930 mm | 1820 mm |
| Vehicle Height | 1730 mm | 1420 mm |
| Wheelbase Size | 3000 mm | 2710 mm |
| Fuel Consumption Highway | 9.8 L/100km | 7.8 L/100km |
| Fuel Consumption City | 13.8 L/100km | 10.2 L/100km |
| Fuel Consumption Overall | 12.4 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 70 L | 65 L |
