2005 Kia Optima vs. 2012 BMW 640
To start off, 2012 BMW 640 is newer by 7 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 2,979 cc (6 cylinders), 2012 BMW 640 is equipped with a bigger engine. In terms of performance, 2012 BMW 640 (318 HP @ 5800 RPM) has 148 more horse power than 2005 Kia Optima. (170 HP @ 4000 RPM) In normal driving conditions, 2012 BMW 640 should accelerate faster than 2005 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2012 BMW 640 weights approximately 338 kg more than 2005 Kia Optima. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2012 BMW 640 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2012 BMW 640. However, in wet, icy, snow, or gravel driving conditions, 2005 Kia Optima, being front wheel drive (FWD), will offer much better control with better grip. 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, 2012 BMW 640 (450 Nm) has 209 more torque (in Nm) than 2005 Kia Optima. (241 Nm). This means 2012 BMW 640 will have an easier job in driving up hills or pulling heavy equipment than 2005 Kia Optima.
Compare all specifications:
| 2005 Kia Optima | 2012 BMW 640 | |
| Make | Kia | BMW |
| Model | Optima | 640 |
| Year Released | 2005 | 2012 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2671 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 170 HP | 318 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 241 Nm | 450 Nm |
| Engine Bore Size | 87 mm | 89.6 mm |
| Engine Stroke Size | 75 mm | 84 mm |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1487 kg | 1825 kg |
| Vehicle Length | 4730 mm | 5007 mm |
| Vehicle Width | 1820 mm | 1894 mm |
| Vehicle Height | 1420 mm | 1392 mm |
| Wheelbase Size | 2710 mm | 2968 mm |
| Fuel Consumption Highway | 8.9 L/100km | 6.1 L/100km |
| Fuel Consumption City | 11.9 L/100km | 10.6 L/100km |
| Fuel Consumption Overall | 10.4 L/100km | 7.8 L/100km |
| Fuel Tank Capacity | 65 L | 70 L |
