2003 Alfa Romeo 166 vs. 2006 Cadillac STS
To start off, 2006 Cadillac STS is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 166 would be higher. At 4,556 cc (8 cylinders), 2006 Cadillac STS is equipped with a bigger engine. In terms of performance, 2006 Cadillac STS (320 HP @ 6400 RPM) has 103 more horse power than 2003 Alfa Romeo 166. (217 HP @ 6300 RPM) In normal driving conditions, 2006 Cadillac STS should accelerate faster than 2003 Alfa Romeo 166.
Because 2006 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 2006 Cadillac STS. However, in wet, icy, snow, or gravel driving conditions, 2003 Alfa Romeo 166, 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, 2006 Cadillac STS (428 Nm @ 4400 RPM) has 163 more torque (in Nm) than 2003 Alfa Romeo 166. (265 Nm @ 5000 RPM). This means 2006 Cadillac STS will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 166.
Compare all specifications:
| 2003 Alfa Romeo 166 | 2006 Cadillac STS | |
| Make | Alfa Romeo | Cadillac |
| Model | 166 | STS |
| Year Released | 2003 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 4556 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 217 HP | 320 HP |
| Engine RPM | 6300 RPM | 6400 RPM |
| Torque | 265 Nm | 428 Nm |
| Torque RPM | 5000 RPM | 4400 RPM |
| Engine Bore Size | 93 mm | 93 mm |
| Engine Stroke Size | 72.6 mm | 84 mm |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4730 mm | 4990 mm |
| Vehicle Width | 1810 mm | 1850 mm |
| Vehicle Height | 1420 mm | 1470 mm |
| Wheelbase Size | 2600 mm | 2960 mm |
| Fuel Consumption Highway | 9.3 L/100km | 9.1 L/100km |
| Fuel Consumption City | 19.4 L/100km | 13.8 L/100km |
| Fuel Consumption Overall | 13 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 69 L | 64 L |
