2003 Alfa Romeo 166 vs. 2011 Cadillac STS
To start off, 2011 Cadillac STS is newer by 8 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 3,600 cc (6 cylinders), 2011 Cadillac STS is equipped with a bigger engine. In terms of performance, 2011 Cadillac STS (302 HP @ 6300 RPM) has 85 more horse power than 2003 Alfa Romeo 166. (217 HP @ 6300 RPM) In normal driving conditions, 2011 Cadillac STS should accelerate faster than 2003 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2011 Cadillac STS weights approximately 252 kg more than 2003 Alfa Romeo 166. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2011 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 2011 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, 2011 Cadillac STS (368 Nm @ 5200 RPM) has 103 more torque (in Nm) than 2003 Alfa Romeo 166. (265 Nm @ 5000 RPM). This means 2011 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 | 2011 Cadillac STS | |
| Make | Alfa Romeo | Cadillac |
| Model | 166 | STS |
| Year Released | 2003 | 2011 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 217 HP | 302 HP |
| Engine RPM | 6300 RPM | 6300 RPM |
| Torque | 265 Nm | 368 Nm |
| Torque RPM | 5000 RPM | 5200 RPM |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1550 kg | 1802 kg |
| Vehicle Length | 4730 mm | 4996 mm |
| Vehicle Width | 1810 mm | 1844 mm |
| Vehicle Height | 1420 mm | 1463 mm |
| Wheelbase Size | 2600 mm | 2957 mm |
| Fuel Consumption Highway | 9.3 L/100km | 8.7 L/100km |
| Fuel Consumption City | 19.4 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 69 L | 64 L |
