2005 Kia Optima vs. 2007 Mercedes-Benz R
To start off, 2007 Mercedes-Benz R is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Kia Optima. In addition, the cost of maintenance, including insurance, on 2005 Kia Optima would be higher. At 6,208 cc (8 cylinders), 2007 Mercedes-Benz R is equipped with a bigger engine. In terms of performance, 2007 Mercedes-Benz R (503 HP @ 6800 RPM) has 333 more horse power than 2005 Kia Optima. (170 HP @ 4000 RPM) In normal driving conditions, 2007 Mercedes-Benz R should accelerate faster than 2005 Kia Optima.
Because 2007 Mercedes-Benz R is four wheel drive (4WD), it will have significant more traction and grip than 2005 Kia Optima. In wet, icy, snow, or gravel driving conditions, 2007 Mercedes-Benz R will offer significantly more control. 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 Mercedes-Benz R (632 Nm) has 391 more torque (in Nm) than 2005 Kia Optima. (241 Nm). This means 2007 Mercedes-Benz R will have an easier job in driving up hills or pulling heavy equipment than 2005 Kia Optima.
Compare all specifications:
| 2005 Kia Optima | 2007 Mercedes-Benz R | |
| Make | Kia | Mercedes-Benz |
| Model | Optima | R |
| Year Released | 2005 | 2007 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 6208 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 170 HP | 503 HP |
| Engine RPM | 4000 RPM | 6800 RPM |
| Torque | 241 Nm | 632 Nm |
| Engine Bore Size | 87 mm | 102.2 mm |
| Engine Stroke Size | 75 mm | 94.6 mm |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4730 mm | 5160 mm |
| Vehicle Width | 1820 mm | 1930 mm |
| Vehicle Height | 1420 mm | 1670 mm |
| Wheelbase Size | 2710 mm | 3220 mm |
| Fuel Consumption | 8.9 L/100km | 14.7 L/100km |
| Fuel Consumption City | 11.9 L/100km | 19.6 L/100km |
| Fuel Consumption Overall | 10.4 L/100km | 18.1 L/100km |
| Fuel Tank Capacity | 65 L | 80 L |
