2007 Alfa Romeo 156 vs. 2005 Cadillac STS
To start off, 2007 Alfa Romeo 156 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Cadillac STS. In addition, the cost of maintenance, including insurance, on 2005 Cadillac STS would be higher. At 3,556 cc (6 cylinders), 2005 Cadillac STS is equipped with a bigger engine. In terms of performance, 2005 Cadillac STS (255 HP @ 6500 RPM) has 107 more horse power than 2007 Alfa Romeo 156. (148 HP @ 6300 RPM) In normal driving conditions, 2005 Cadillac STS should accelerate faster than 2007 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac STS weights approximately 511 kg more than 2007 Alfa Romeo 156. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Cadillac STS 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 STS. However, in wet, icy, snow, or gravel driving conditions, 2007 Alfa Romeo 156, 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 STS (339 Nm @ 3200 RPM) has 157 more torque (in Nm) than 2007 Alfa Romeo 156. (182 Nm @ 3800 RPM). This means 2005 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2007 Alfa Romeo 156.
Compare all specifications:
| 2007 Alfa Romeo 156 | 2005 Cadillac STS | |
| Make | Alfa Romeo | Cadillac |
| Model | 156 | STS |
| Year Released | 2007 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1970 cc | 3556 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 148 HP | 255 HP |
| Engine RPM | 6300 RPM | 6500 RPM |
| Torque | 182 Nm | 339 Nm |
| Torque RPM | 3800 RPM | 3200 RPM |
| Engine Bore Size | 83 mm | 94 mm |
| Engine Stroke Size | 91 mm | 86 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 214 km/hour | 229 km/hour |
| Acceleration 0-100mph | 8.8 seconds | 7.4 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1285 kg | 1796 kg |
| Vehicle Length | 4440 mm | 4990 mm |
| Vehicle Width | 1750 mm | 1850 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2890 mm |
| Fuel Consumption Overall | 8.7 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 63 L | 64 L |
