2006 Alfa Romeo 156 vs. 2003 Toyota Sienna
To start off, 2006 Alfa Romeo 156 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Toyota Sienna. In addition, the cost of maintenance, including insurance, on 2003 Toyota Sienna would be higher. At 2,997 cc (6 cylinders), 2003 Toyota Sienna is equipped with a bigger engine. In terms of performance, 2006 Alfa Romeo 156 (189 HP @ 6300 RPM) has 16 more horse power than 2003 Toyota Sienna. (173 HP @ 5400 RPM). In normal driving conditions, 2006 Alfa Romeo 156 should accelerate faster than 2003 Toyota Sienna. With that said, vehicle weight also plays an important factor in acceleration. 2003 Toyota Sienna weights approximately 120 kg more than 2006 Alfa Romeo 156.
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 Toyota Sienna (294 Nm @ 4300 RPM) has 76 more torque (in Nm) than 2006 Alfa Romeo 156. (218 Nm @ 5000 RPM). This means 2003 Toyota Sienna will have an easier job in driving up hills or pulling heavy equipment than 2006 Alfa Romeo 156. 2003 Toyota Sienna has automatic transmission and 2006 Alfa Romeo 156 has manual transmission. 2006 Alfa Romeo 156 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Toyota Sienna will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 Alfa Romeo 156 | 2003 Toyota Sienna | |
| Make | Alfa Romeo | Toyota |
| Model | 156 | Sienna |
| Year Released | 2006 | 2003 |
| Body Type | Sedan | Minivan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 2997 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 173 HP |
| Engine RPM | 6300 RPM | 5400 RPM |
| Torque | 218 Nm | 294 Nm |
| Torque RPM | 5000 RPM | 4300 RPM |
| Engine Bore Size | 88 mm | 87.5 mm |
| Engine Stroke Size | 68.3 mm | 83 mm |
| Engine Compression Ratio | 10.3:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | Front |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1585 kg | 1705 kg |
| Vehicle Length | 4440 mm | 4920 mm |
| Vehicle Width | 1750 mm | 1870 mm |
| Vehicle Height | 1440 mm | 1720 mm |
| Wheelbase Size | 2600 mm | 2910 mm |
