2007 Kia Optima vs. 2005 Mercedes-Benz R
To start off, 2007 Kia Optima is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz R. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz R would be higher. At 4,966 cc (8 cylinders), 2005 Mercedes-Benz R is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz R (302 HP @ 4200 RPM) has 140 more horse power than 2007 Kia Optima. (162 HP @ 5800 RPM) In normal driving conditions, 2005 Mercedes-Benz R should accelerate faster than 2007 Kia Optima.
Because 2005 Mercedes-Benz R is four wheel drive (4WD), it will have significant more traction and grip than 2007 Kia Optima. In wet, icy, snow, or gravel driving conditions, 2005 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, 2005 Mercedes-Benz R (461 Nm @ 2700 RPM) has 239 more torque (in Nm) than 2007 Kia Optima. (222 Nm @ 4250 RPM). This means 2005 Mercedes-Benz R will have an easier job in driving up hills or pulling heavy equipment than 2007 Kia Optima. 2005 Mercedes-Benz R has automatic transmission and 2007 Kia Optima has manual transmission. 2007 Kia Optima will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Mercedes-Benz R will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Kia Optima | 2005 Mercedes-Benz R | |
| Make | Kia | Mercedes-Benz |
| Model | Optima | R |
| Year Released | 2007 | 2005 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 2359 cc | 4966 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 162 HP | 302 HP |
| Engine RPM | 5800 RPM | 4200 RPM |
| Torque | 222 Nm | 461 Nm |
| Torque RPM | 4250 RPM | 2700 RPM |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Length | 4740 mm | 5160 mm |
| Vehicle Width | 1810 mm | 1930 mm |
| Vehicle Height | 1490 mm | 1660 mm |
| Wheelbase Size | 2730 mm | 2860 mm |
| Fuel Tank Capacity | 62 L | 80 L |
