2003 Alfa Romeo 156 vs. 2007 Alfa Romeo 166
To start off, 2007 Alfa Romeo 166 is newer by 4 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 2,959 cc (6 cylinders), 2007 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2007 Alfa Romeo 166 (217 HP @ 6300 RPM) has 98 more horse power than 2003 Alfa Romeo 156. (119 HP @ 6200 RPM) In normal driving conditions, 2007 Alfa Romeo 166 should accelerate faster than 2003 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2007 Alfa Romeo 166 weights approximately 214 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.
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, 2007 Alfa Romeo 166 (265 Nm @ 5000 RPM) has 119 more torque (in Nm) than 2003 Alfa Romeo 156. (146 Nm @ 4200 RPM). This means 2007 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 156. 2007 Alfa Romeo 166 has automatic transmission and 2003 Alfa Romeo 156 has manual transmission. 2003 Alfa Romeo 156 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Alfa Romeo 166 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2007 Alfa Romeo 166 | |
| Make | Alfa Romeo | Alfa Romeo |
| Model | 156 | 166 |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1598 cc | 2959 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 119 HP | 217 HP |
| Engine RPM | 6200 RPM | 6300 RPM |
| Torque | 146 Nm | 265 Nm |
| Torque RPM | 4200 RPM | 5000 RPM |
| Engine Bore Size | 82 mm | 93 mm |
| Engine Stroke Size | 75.6 mm | 72.6 mm |
| Engine Compression Ratio | 10.3:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 200 km/hour | 236 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1340 kg | 1554 kg |
| Vehicle Length | 4440 mm | 4730 mm |
| Vehicle Width | 1750 mm | 1810 mm |
| Vehicle Height | 1400 mm | 1420 mm |
| Wheelbase Size | 2600 mm | 2710 mm |
| Fuel Consumption Overall | 8.2 L/100km | 13 L/100km |
| Fuel Tank Capacity | 63 L | 69 L |
