2009 Cadillac BLS vs. 2007 Fiat Siena
To start off, 2009 Cadillac BLS is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2007 Fiat Siena would be higher. At 2,792 cc (6 cylinders), 2009 Cadillac BLS is equipped with a bigger engine. In terms of performance, 2009 Cadillac BLS (252 HP @ 5500 RPM) has 152 more horse power than 2007 Fiat Siena. (100 HP @ 5500 RPM). In normal driving conditions, 2009 Cadillac BLS should accelerate faster than 2007 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2009 Cadillac BLS weights approximately 565 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.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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 Cadillac BLS (365 Nm @ 1800 RPM) has 290 more torque (in Nm) than 2007 Fiat Siena. (75 Nm @ 5500 RPM). This means 2009 Cadillac BLS will have an easier job in driving up hills or pulling heavy equipment than 2007 Fiat Siena.
Compare all specifications:
| 2009 Cadillac BLS | 2007 Fiat Siena | |
| Make | Cadillac | Fiat |
| Model | BLS | Siena |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2792 cc | 1581 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 252 HP | 100 HP |
| Engine RPM | 5500 RPM | 5500 RPM |
| Torque | 365 Nm | 75 Nm |
| Torque RPM | 1800 RPM | 5500 RPM |
| Engine Bore Size | 89.1 mm | 86.4 mm |
| Engine Stroke Size | 74.8 mm | 67.4 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 7 seconds | 11.5 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1635 kg | 1070 kg |
| Vehicle Width | 1760 mm | 1640 mm |
| Vehicle Height | 1480 mm | 1440 mm |
| Wheelbase Size | 2680 mm | 2380 mm |
| Fuel Consumption Overall | 10.2 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 58 L | 54 L |
