2003 Alfa Romeo 166 vs. 2006 Chevrolet Optra
To start off, 2006 Chevrolet Optra is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2003 Alfa Romeo 166 would be higher. At 2,387 cc (5 cylinders), 2003 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2003 Alfa Romeo 166 (148 HP @ 4000 RPM) has 28 more horse power than 2006 Chevrolet Optra. (120 HP @ 5800 RPM). In normal driving conditions, 2003 Alfa Romeo 166 should accelerate faster than 2006 Chevrolet Optra.
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 (300 Nm @ 1800 RPM) has 135 more torque (in Nm) than 2006 Chevrolet Optra. (165 Nm @ 4000 RPM). This means 2003 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 2006 Chevrolet Optra.
Compare all specifications:
| 2003 Alfa Romeo 166 | 2006 Chevrolet Optra | |
| Make | Alfa Romeo | Chevrolet |
| Model | 166 | Optra |
| Year Released | 2003 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 1799 cc |
| Engine Cylinders | 5 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 120 HP |
| Engine RPM | 4000 RPM | 5800 RPM |
| Torque | 300 Nm | 165 Nm |
| Torque RPM | 1800 RPM | 4000 RPM |
| Engine Bore Size | 82 mm | 81.6 mm |
| Engine Stroke Size | 90.4 mm | 86 mm |
| Engine Compression Ratio | 18.5:1 | 9.8:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 4730 mm | 4440 mm |
| Vehicle Width | 1810 mm | 1730 mm |
| Vehicle Height | 1420 mm | 1460 mm |
| Wheelbase Size | 2600 mm | 2610 mm |
| Fuel Tank Capacity | 69 L | 60 L |
