2005 Alfa Romeo 166 vs. 2004 Mazda 6
To start off, 2005 Alfa Romeo 166 is newer by 1 year(s). Which means there will be less support and parts availability for 2004 Mazda 6. In addition, the cost of maintenance, including insurance, on 2004 Mazda 6 would be higher. At 3,179 cc (6 cylinders), 2005 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2004 Mazda 6 (256 HP @ 6000 RPM) has 19 more horse power than 2005 Alfa Romeo 166. (237 HP @ 6200 RPM) In normal driving conditions, 2004 Mazda 6 should accelerate faster than 2005 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alfa Romeo 166 weights approximately 585 kg more than 2004 Mazda 6.
Because 2004 Mazda 6 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Alfa Romeo 166. In wet, icy, snow, or gravel driving conditions, 2004 Mazda 6 will offer significantly more control. 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, 2004 Mazda 6 (380 Nm @ 3000 RPM) has 91 more torque (in Nm) than 2005 Alfa Romeo 166. (289 Nm @ 4800 RPM). This means 2004 Mazda 6 will have an easier job in driving up hills or pulling heavy equipment than 2005 Alfa Romeo 166.
Compare all specifications:
| 2005 Alfa Romeo 166 | 2004 Mazda 6 | |
| Make | Alfa Romeo | Mazda |
| Model | 166 | 6 |
| Year Released | 2005 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3179 cc | 2261 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 237 HP | 256 HP |
| Engine RPM | 6200 RPM | 6000 RPM |
| Torque | 289 Nm | 380 Nm |
| Torque RPM | 4800 RPM | 3000 RPM |
| Engine Bore Size | 93 mm | 87.5 mm |
| Engine Stroke Size | 78 mm | 94 mm |
| Engine Compression Ratio | 10.0:1 | 9.5:1 |
| Top Speed | 245 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 6.9 seconds |
| Drive Type | Front | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1615 kg | 1030 kg |
| Vehicle Length | 4730 mm | 4750 mm |
| Vehicle Width | 1810 mm | 1790 mm |
| Vehicle Height | 1420 mm | 1450 mm |
| Wheelbase Size | 2710 mm | 2680 mm |
