2006 Alfa Romeo GT vs. 2003 Alfa Romeo 156
To start off, 2006 Alfa Romeo GT is newer by 3 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 3,177 cc (6 cylinders), 2006 Alfa Romeo GT is equipped with a bigger engine. In terms of performance, 2006 Alfa Romeo GT (236 HP @ 6200 RPM) has 98 more horse power than 2003 Alfa Romeo 156. (138 HP @ 4000 RPM). In normal driving conditions, 2006 Alfa Romeo GT should accelerate faster than 2003 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2006 Alfa Romeo GT weights approximately 177 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, 2003 Alfa Romeo 156 (305 Nm @ 2000 RPM) has 5 more torque (in Nm) than 2006 Alfa Romeo GT. (300 Nm @ 4800 RPM). This means 2003 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2006 Alfa Romeo GT.
Compare all specifications:
| 2006 Alfa Romeo GT | 2003 Alfa Romeo 156 | |
| Make | Alfa Romeo | Alfa Romeo |
| Model | GT | 156 |
| Year Released | 2006 | 2003 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3177 cc | 1910 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 236 HP | 138 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 300 Nm | 305 Nm |
| Torque RPM | 4800 RPM | 2000 RPM |
| Engine Bore Size | 93 mm | 82 mm |
| Engine Stroke Size | 78 mm | 90.4 mm |
| Engine Compression Ratio | 10.5:1 | 18.5:1 |
| Fuel Type | Gasoline | Diesel |
| Top Speed | 243 km/hour | 209 km/hour |
| Acceleration 0-100mph | 6.7 seconds | 9.3 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1485 kg | 1308 kg |
| Vehicle Length | 4500 mm | 4440 mm |
| Vehicle Width | 1770 mm | 1750 mm |
| Vehicle Height | 1370 mm | 1440 mm |
| Wheelbase Size | 2610 mm | 2600 mm |
| Fuel Consumption Overall | 12.4 L/100km | 5.9 L/100km |
| Fuel Tank Capacity | 63 L | 63 L |
