2007 Cadillac XLR vs. 2005 Kia Optima
To start off, 2007 Cadillac XLR is newer by 2 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 4,565 cc (8 cylinders), 2007 Cadillac XLR is equipped with a bigger engine. In terms of performance, 2007 Cadillac XLR (320 HP @ 6400 RPM) has 150 more horse power than 2005 Kia Optima. (170 HP @ 4000 RPM). In normal driving conditions, 2007 Cadillac XLR should accelerate faster than 2005 Kia Optima. With that said, vehicle weight also plays an important factor in acceleration. 2007 Cadillac XLR weights approximately 168 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 2007 Cadillac XLR 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 2007 Cadillac XLR. 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, 2007 Cadillac XLR (420 Nm) has 179 more torque (in Nm) than 2005 Kia Optima. (241 Nm). This means 2007 Cadillac XLR will have an easier job in driving up hills or pulling heavy equipment than 2005 Kia Optima.
Compare all specifications:
| 2007 Cadillac XLR | 2005 Kia Optima | |
| Make | Cadillac | Kia |
| Model | XLR | Optima |
| Year Released | 2007 | 2005 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 2671 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 320 HP | 170 HP |
| Engine RPM | 6400 RPM | 4000 RPM |
| Torque | 420 Nm | 241 Nm |
| Engine Bore Size | 93 mm | 87 mm |
| Engine Stroke Size | 84.1 mm | 75 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Drive Type | Rear | Front |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1655 kg | 1487 kg |
| Vehicle Length | 4520 mm | 4730 mm |
| Vehicle Width | 1840 mm | 1820 mm |
| Vehicle Height | 1290 mm | 1420 mm |
| Wheelbase Size | 2690 mm | 2710 mm |
| Fuel Consumption Overall | 11.9 L/100km | 10.4 L/100km |
| Fuel Tank Capacity | 68 L | 65 L |
