2003 Alfa Romeo 166 vs. 1998 Alfa Romeo 155
To start off, 2003 Alfa Romeo 166 is newer by 5 year(s). Which means there will be less support and parts availability for 1998 Alfa Romeo 155. In addition, the cost of maintenance, including insurance, on 1998 Alfa Romeo 155 would be higher. At 2,959 cc (6 cylinders), 2003 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 166 (217 HP @ 6300 RPM) has 99 more horse power than 1998 Alfa Romeo 155. (118 HP @ 6300 RPM). In normal driving conditions, 2003 Alfa Romeo 166 should accelerate faster than 1998 Alfa Romeo 155. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo 166 weights approximately 280 kg more than 1998 Alfa Romeo 155. 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 166 (265 Nm @ 5000 RPM) has 121 more torque (in Nm) than 1998 Alfa Romeo 155. (144 Nm @ 4500 RPM). This means 2003 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 1998 Alfa Romeo 155. 2003 Alfa Romeo 166 has automatic transmission and 1998 Alfa Romeo 155 has manual transmission. 1998 Alfa Romeo 155 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 Alfa Romeo 166 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Alfa Romeo 166 | 1998 Alfa Romeo 155 | |
| Make | Alfa Romeo | Alfa Romeo |
| Model | 166 | 155 |
| Year Released | 2003 | 1998 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 1598 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 217 HP | 118 HP |
| Engine RPM | 6300 RPM | 6300 RPM |
| Torque | 265 Nm | 144 Nm |
| Torque RPM | 5000 RPM | 4500 RPM |
| Engine Bore Size | 93 mm | 82 mm |
| Engine Stroke Size | 72.6 mm | 75.7 mm |
| Engine Compression Ratio | 10.0:1 | 10.3:1 |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1550 kg | 1270 kg |
| Vehicle Length | 4730 mm | 4450 mm |
| Vehicle Width | 1810 mm | 1710 mm |
| Vehicle Height | 1420 mm | 1450 mm |
