2005 Alfa Romeo 156 vs. 2008 Alfa Romeo 166
To start off, 2008 Alfa Romeo 166 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Alfa Romeo 156. In addition, the cost of maintenance, including insurance, on 2005 Alfa Romeo 156 would be higher. At 3,177 cc (6 cylinders), 2008 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2008 Alfa Romeo 166 (237 HP @ 6200 RPM) has 52 more horse power than 2005 Alfa Romeo 156. (185 HP @ 5000 RPM) In normal driving conditions, 2008 Alfa Romeo 166 should accelerate faster than 2005 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2008 Alfa Romeo 166 weights approximately 125 kg more than 2005 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, 2008 Alfa Romeo 166 (289 Nm @ 4800 RPM) has 68 more torque (in Nm) than 2005 Alfa Romeo 156. (221 Nm @ 5000 RPM). This means 2008 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo 156.
Compare all specifications:
| 2005 Alfa Romeo 156 | 2008 Alfa Romeo 166 | |
| Make | Alfa Romeo | Alfa Romeo |
| Model | 156 | 166 |
| Year Released | 2005 | 2008 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2490 cc | 3177 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 185 HP | 237 HP |
| Engine RPM | 5000 RPM | 6200 RPM |
| Torque | 221 Nm | 289 Nm |
| Torque RPM | 5000 RPM | 4800 RPM |
| Engine Bore Size | 88 mm | 93 mm |
| Engine Stroke Size | 68.3 mm | 78 mm |
| Engine Compression Ratio | 10.3:1 | 10.0:1 |
| Top Speed | 225 km/hour | 245 km/hour |
| Acceleration 0-100mph | 8.4 seconds | 7.4 seconds |
| Drive Type | Front | Front |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1490 kg | 1615 kg |
| Vehicle Length | 4730 mm | 4730 mm |
| Vehicle Width | 1820 mm | 1810 mm |
| Vehicle Height | 1420 mm | 1420 mm |
| Wheelbase Size | 2600 mm | 2710 mm |
| Fuel Consumption Overall | 11.8 L/100km | 12.5 L/100km |
| Fuel Tank Capacity | 72 L | 69 L |
