2005 Kia Opirus vs. 2008 BMW Z4
To start off, 2008 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Kia Opirus. In addition, the cost of maintenance, including insurance, on 2005 Kia Opirus would be higher. At 3,497 cc (6 cylinders), 2005 Kia Opirus is equipped with a bigger engine. In terms of performance, 2008 BMW Z4 (261 HP @ 6600 RPM) has 65 more horse power than 2005 Kia Opirus. (196 HP @ 5500 RPM) In normal driving conditions, 2008 BMW Z4 should accelerate faster than 2005 Kia Opirus. With that said, vehicle weight also plays an important factor in acceleration. 2005 Kia Opirus weights approximately 365 kg more than 2008 BMW Z4.
Because 2008 BMW Z4 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 2008 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2005 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, 2008 BMW Z4 (316 Nm @ 2750 RPM) has 22 more torque (in Nm) than 2005 Kia Opirus. (294 Nm @ 3500 RPM). This means 2008 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2005 Kia Opirus.
Compare all specifications:
| 2005 Kia Opirus | 2008 BMW Z4 | |
| Make | Kia | BMW |
| Model | Opirus | Z4 |
| Year Released | 2005 | 2008 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 3497 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 196 HP | 261 HP |
| Engine RPM | 5500 RPM | 6600 RPM |
| Torque | 294 Nm | 316 Nm |
| Torque RPM | 3500 RPM | 2750 RPM |
| Engine Bore Size | 93 mm | 85 mm |
| Engine Stroke Size | 85.8 mm | 88 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1760 kg | 1395 kg |
| Vehicle Length | 4960 mm | 4100 mm |
| Vehicle Width | 1860 mm | 1790 mm |
| Vehicle Height | 1490 mm | 1270 mm |
| Wheelbase Size | 2810 mm | 2500 mm |
