2005 Cadillac XLR vs. 2007 Fiat Siena
To start off, 2007 Fiat Siena is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Cadillac XLR. In addition, the cost of maintenance, including insurance, on 2005 Cadillac XLR would be higher. At 4,564 cc (8 cylinders), 2005 Cadillac XLR is equipped with a bigger engine. In terms of performance, 2005 Cadillac XLR (322 HP @ 6400 RPM) has 222 more horse power than 2007 Fiat Siena. (100 HP @ 5500 RPM). In normal driving conditions, 2005 Cadillac XLR should accelerate faster than 2007 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac XLR weights approximately 584 kg more than 2007 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 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 2005 Cadillac XLR. However, in wet, icy, snow, or gravel driving conditions, 2007 Fiat Siena, 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, 2005 Cadillac XLR (420 Nm @ 4000 RPM) has 280 more torque (in Nm) than 2007 Fiat Siena. (140 Nm @ 4000 RPM). This means 2005 Cadillac XLR will have an easier job in driving up hills or pulling heavy equipment than 2007 Fiat Siena. 2005 Cadillac XLR has automatic transmission and 2007 Fiat Siena has manual transmission. 2007 Fiat Siena will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Cadillac XLR will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Cadillac XLR | 2007 Fiat Siena | |
| Make | Cadillac | Fiat |
| Model | XLR | Siena |
| Year Released | 2005 | 2007 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4564 cc | 1581 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 322 HP | 100 HP |
| Engine RPM | 6400 RPM | 5500 RPM |
| Torque | 420 Nm | 140 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 179 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 11.5 seconds |
| Drive Type | Rear | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1654 kg | 1070 kg |
| Vehicle Width | 1840 mm | 1640 mm |
| Wheelbase Size | 2690 mm | 2380 mm |
| Fuel Tank Capacity | 68 L | 54 L |
