2005 Alfa Romeo 166 vs. 2001 Alfa Romeo 156
To start off, 2005 Alfa Romeo 166 is newer by 4 year(s). Which means there will be less support and parts availability for 2001 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2001 Alfa Romeo 156 would be higher. At 2,492 cc (5 cylinders), 2005 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2005 Alfa Romeo 166 (173 HP @ 4000 RPM) has 55 more horse power than 2001 Alfa Romeo 156. (118 HP @ 6400 RPM). In normal driving conditions, 2005 Alfa Romeo 166 should accelerate faster than 2001 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alfa Romeo 166 weights approximately 300 kg more than 2001 Alfa Romeo 156. 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, 2005 Alfa Romeo 166 (385 Nm @ 2000 RPM) has 245 more torque (in Nm) than 2001 Alfa Romeo 156. (140 Nm @ 4500 RPM). This means 2005 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2001 Alfa Romeo 156.
Compare all specifications:
| 2005 Alfa Romeo 166 | 2001 Alfa Romeo 156 | |
| Make | Alfa Romeo | Alfa Romeo |
| Model | 166 | 156 |
| Year Released | 2005 | 2001 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 1597 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 173 HP | 118 HP |
| Engine RPM | 4000 RPM | 6400 RPM |
| Torque | 385 Nm | 140 Nm |
| Torque RPM | 2000 RPM | 4500 RPM |
| Engine Compression Ratio | 18.5:1 | 10.3:1 |
| Fuel Type | Diesel | Gasoline |
| Acceleration 0-100mph | 8.9 seconds | 11 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1615 kg | 1315 kg |
| Vehicle Length | 4730 mm | 4450 mm |
| Vehicle Width | 1810 mm | 1750 mm |
| Vehicle Height | 1420 mm | 1430 mm |
| Wheelbase Size | 2600 mm | 2600 mm |
| Fuel Consumption Overall | 7.2 L/100km | 5.9 L/100km |
| Fuel Tank Capacity | 72 L | 63 L |
