2009 BMW 635 vs. 2004 Kia Opirus
To start off, 2009 BMW 635 is newer by 5 year(s). Which means there will be less support and parts availability for 2004 Kia Opirus. In addition, the cost of maintenance, including insurance, on 2004 Kia Opirus would be higher. At 3,497 cc (6 cylinders), 2004 Kia Opirus is equipped with a bigger engine. In terms of performance, 2009 BMW 635 (282 HP @ 4400 RPM) has 86 more horse power than 2004 Kia Opirus. (196 HP @ 5500 RPM). In normal driving conditions, 2009 BMW 635 should accelerate faster than 2004 Kia Opirus. With that said, vehicle weight also plays an important factor in acceleration. 2004 Kia Opirus weights approximately 35 kg more than 2009 BMW 635.
Because 2009 BMW 635 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 2009 BMW 635. However, in wet, icy, snow, or gravel driving conditions, 2004 Kia Opirus, 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, 2009 BMW 635 (581 Nm @ 1750 RPM) has 287 more torque (in Nm) than 2004 Kia Opirus. (294 Nm @ 3500 RPM). This means 2009 BMW 635 will have an easier job in driving up hills or pulling heavy equipment than 2004 Kia Opirus.
Compare all specifications:
| 2009 BMW 635 | 2004 Kia Opirus | |
| Make | BMW | Kia |
| Model | 635 | Opirus |
| Year Released | 2009 | 2004 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 3497 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 282 HP | 196 HP |
| Engine RPM | 4400 RPM | 5500 RPM |
| Torque | 581 Nm | 294 Nm |
| Torque RPM | 1750 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 93 mm |
| Engine Stroke Size | 90 mm | 85.8 mm |
| Fuel Type | Diesel | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1725 kg | 1760 kg |
| Vehicle Length | 4830 mm | 4960 mm |
| Vehicle Width | 1860 mm | 1860 mm |
| Vehicle Height | 1380 mm | 1490 mm |
| Wheelbase Size | 2790 mm | 2810 mm |
