2007 Proton Gen vs. 2011 Kia Optima
To start off, 2011 Kia Optima is newer by 4 year(s). Which means there will be less support and parts availability for 2007 Proton Gen. In addition, the cost of maintenance, including insurance, on 2007 Proton Gen would be higher. At 2,400 cc (4 cylinders), 2011 Kia Optima is equipped with a bigger engine. In terms of performance, 2011 Kia Optima (166 HP @ 6000 RPM) has 57 more horse power than 2007 Proton Gen. (109 HP @ 6000 RPM) In normal driving conditions, 2011 Kia Optima should accelerate faster than 2007 Proton Gen.
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, 2011 Kia Optima (209 Nm @ 4250 RPM) has 61 more torque (in Nm) than 2007 Proton Gen. (148 Nm @ 4000 RPM). This means 2011 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 2007 Proton Gen.
Compare all specifications:
| 2007 Proton Gen | 2011 Kia Optima | |
| Make | Proton | Kia |
| Model | Gen | Optima |
| Year Released | 2007 | 2011 |
| Engine Size | 1596 cc | 2400 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 109 HP | 166 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 148 Nm | 209 Nm |
| Torque RPM | 4000 RPM | 4250 RPM |
| Fuel Type | Gasoline | Gasoline / Electric Hybrid |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4320 mm | 4844 mm |
| Vehicle Width | 1730 mm | 1831 mm |
| Vehicle Height | 1440 mm | 1455 mm |
| Wheelbase Size | 2610 mm | 2797 mm |
| Fuel Tank Capacity | 40 L | 65 L |
