2006 Kia Optima vs. 2008 Kia Rio
To start off, 2008 Kia Rio 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 2,351 cc (4 cylinders), 2006 Kia Optima is equipped with a bigger engine. In terms of performance, 2008 Kia Rio (139 HP @ 6000 RPM) has 1 more horse power than 2006 Kia Optima. (138 HP @ 5500 RPM) In normal driving conditions, 2008 Kia Rio should accelerate faster than 2006 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2006 Kia Optima weights approximately 936 kg more than 2008 Kia Rio.
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, 2006 Kia Optima (199 Nm @ 3000 RPM) has 74 more torque (in Nm) than 2008 Kia Rio. (125 Nm @ 6500 RPM). This means 2006 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 2008 Kia Rio.
Compare all specifications:
| 2006 Kia Optima | 2008 Kia Rio | |
| Make | Kia | Kia |
| Model | Optima | Rio |
| Year Released | 2006 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2351 cc | 1399 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 138 HP | 139 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 199 Nm | 125 Nm |
| Torque RPM | 3000 RPM | 6500 RPM |
| Engine Bore Size | 86.5 mm | 75.5 mm |
| Engine Stroke Size | 100 mm | 78.1 mm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline |
| 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 | 1064 kg |
| Vehicle Length | 4730 mm | 4550 mm |
| Vehicle Height | 1420 mm | 1490 mm |
| Wheelbase Size | 2710 mm | 2510 mm |
| Fuel Consumption Overall | 9.4 L/100km | 6.2 L/100km |
| Fuel Tank Capacity | 65 L | 45 L |
