2002 BMW Z4 vs. 2004 Kia Optima
To start off, 2004 Kia Optima is newer by 2 year(s). Which means there will be less support and parts availability for 2002 BMW Z4. In addition, the cost of maintenance, including insurance, on 2002 BMW Z4 would be higher. At 2,996 cc (6 cylinders), 2002 BMW Z4 is equipped with a bigger engine. In terms of performance, 2002 BMW Z4 (227 HP @ 5900 RPM) has 90 more horse power than 2004 Kia Optima. (137 HP @ 4000 RPM). In normal driving conditions, 2002 BMW Z4 should accelerate faster than 2004 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2004 Kia Optima weights approximately 102 kg more than 2002 BMW Z4.
Because 2002 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 2002 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2004 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, 2002 BMW Z4 (300 Nm) has 101 more torque (in Nm) than 2004 Kia Optima. (199 Nm). This means 2002 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2004 Kia Optima.
Compare all specifications:
| 2002 BMW Z4 | 2004 Kia Optima | |
| Make | BMW | Kia |
| Model | Z4 | Optima |
| Year Released | 2002 | 2004 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 2360 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 227 HP | 137 HP |
| Engine RPM | 5900 RPM | 4000 RPM |
| Torque | 300 Nm | 199 Nm |
| Engine Bore Size | 84 mm | 87.1 mm |
| Engine Stroke Size | 89.6 mm | 100 mm |
| Engine Compression Ratio | 10.2:1 | 10.0:1 |
| Drive Type | Rear | Front |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1386 kg | 1488 kg |
| Vehicle Length | 4100 mm | 4730 mm |
| Vehicle Width | 1790 mm | 1820 mm |
| Vehicle Height | 1310 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2710 mm |
| Fuel Consumption | 7.3 L/100km | 7.8 L/100km |
| Fuel Consumption City | 13.5 L/100km | 10.2 L/100km |
| Fuel Consumption Overall | 9.5 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 55 L | 65 L |
