2003 Alfa Romeo 156 vs. 2006 Seat Leon
To start off, 2006 Seat Leon 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 2,387 cc (5 cylinders), 2003 Alfa Romeo 156 is equipped with a bigger engine. In terms of performance, 2006 Seat Leon (182 HP @ 6000 RPM) has 8 more horse power than 2003 Alfa Romeo 156. (174 HP @ 4000 RPM) In normal driving conditions, 2006 Seat Leon should accelerate faster than 2003 Alfa Romeo 156. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo 156 weights approximately 126 kg more than 2006 Seat Leon.
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 (385 Nm @ 2000 RPM) has 115 more torque (in Nm) than 2006 Seat Leon. (270 Nm @ 1800 RPM). This means 2003 Alfa Romeo 156 will have an easier job in driving up hills or pulling heavy equipment than 2006 Seat Leon.
Compare all specifications:
| 2003 Alfa Romeo 156 | 2006 Seat Leon | |
| Make | Alfa Romeo | Seat |
| Model | 156 | Leon |
| Year Released | 2003 | 2006 |
| Body Type | Sedan | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 1984 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 174 HP | 182 HP |
| Engine RPM | 4000 RPM | 6000 RPM |
| Torque | 385 Nm | 270 Nm |
| Torque RPM | 2000 RPM | 1800 RPM |
| Engine Compression Ratio | 18.5:1 | 10.3:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Acceleration 0-100mph | 8.3 seconds | 7.8 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 | 1460 kg | 1334 kg |
| Vehicle Length | 4440 mm | 4320 mm |
| Vehicle Width | 1750 mm | 1770 mm |
| Vehicle Height | 1440 mm | 1460 mm |
| Wheelbase Size | 2550 mm | 2580 mm |
| Fuel Consumption Overall | 6.6 L/100km | 8.2 L/100km |
| Fuel Tank Capacity | 63 L | 55 L |
