2006 Kia Optima vs. 1999 Proton 400
To start off, 2006 Kia Optima is newer by 7 year(s). Which means there will be less support and parts availability for 1999 Proton 400. In addition, the cost of maintenance, including insurance, on 1999 Proton 400 would be higher. At 2,671 cc (6 cylinders), 2006 Kia Optima is equipped with a bigger engine. In terms of performance, 2006 Kia Optima (170 HP @ 6000 RPM) has 96 more horse power than 1999 Proton 400. (74 HP @ 6000 RPM). In normal driving conditions, 2006 Kia Optima should accelerate faster than 1999 Proton 400. With that said, vehicle weight also plays an important factor in acceleration. 2006 Kia Optima weights approximately 517 kg more than 1999 Proton 400. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 (245 Nm @ 4000 RPM) has 137 more torque (in Nm) than 1999 Proton 400. (108 Nm @ 3000 RPM). This means 2006 Kia Optima will have an easier job in driving up hills or pulling heavy equipment than 1999 Proton 400.
Compare all specifications:
| 2006 Kia Optima | 1999 Proton 400 | |
| Make | Kia | Proton |
| Model | Optima | 400 |
| Year Released | 2006 | 1999 |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 1299 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 170 HP | 74 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 245 Nm | 108 Nm |
| Torque RPM | 4000 RPM | 3000 RPM |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Front | Front |
| Vehicle Weight | 1487 kg | 970 kg |
| Vehicle Length | 4730 mm | 4370 mm |
| Vehicle Width | 1820 mm | 1700 mm |
| Vehicle Height | 1420 mm | 1390 mm |
| Wheelbase Size | 2710 mm | 2510 mm |
