2003 Alfa Romeo 156 vs. 2005 Cadillac STS
To start off, 2005 Cadillac STS is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 156 would be higher. At 3,562 cc (6 cylinders), 2005 Cadillac STS is equipped with a bigger engine. In terms of performance, 2005 Cadillac STS (252 HP @ 6500 RPM) has 63 more horse power than 2003 Alfa Romeo 156. (189 HP @ 6200 RPM) In normal driving conditions, 2005 Cadillac STS should accelerate faster than 2003 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2005 Cadillac STS weights approximately 310 kg more than 2003 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, 2003 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 (342 Nm @ 3200 RPM) has 124 more torque (in Nm) than 2003 Alfa Romeo 156. (218 Nm @ 5000 RPM). This means 2005 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 156.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2005 Cadillac STS | |
| Make | Alfa Romeo | Cadillac |
| Model | 156 | STS |
| Year Released | 2003 | 2005 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 3562 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 252 HP |
| Engine RPM | 6200 RPM | 6500 RPM |
| Torque | 218 Nm | 342 Nm |
| Torque RPM | 5000 RPM | 3200 RPM |
| Engine Bore Size | 88.1 mm | 94 mm |
| Engine Stroke Size | 68.3 mm | 86 mm |
| Engine Compression Ratio | 10.3:1 | 10.2:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 7.3 seconds | 7.4 seconds |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1480 kg | 1790 kg |
| Vehicle Length | 4450 mm | 4990 mm |
| Vehicle Width | 1750 mm | 1850 mm |
| Vehicle Height | 1400 mm | 1470 mm |
| Wheelbase Size | 2710 mm | 2690 mm |
| Fuel Consumption Overall | 11.9 L/100km | 12.4 L/100km |
| Fuel Tank Capacity | 63 L | 95 L |
