2003 Alfa Romeo 166 vs. 2007 Mazda 6
To start off, 2007 Mazda 6 is newer by 4 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 3,177 cc (6 cylinders), 2003 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2007 Mazda 6 (256 HP @ 5500 RPM) has 9 more horse power than 2003 Alfa Romeo 166. (247 HP @ 6200 RPM) In normal driving conditions, 2007 Mazda 6 should accelerate faster than 2003 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alfa Romeo 166 weights approximately 186 kg more than 2007 Mazda 6.
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, 2007 Mazda 6 (380 Nm @ 3000 RPM) has 91 more torque (in Nm) than 2003 Alfa Romeo 166. (289 Nm @ 4800 RPM). This means 2007 Mazda 6 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 166.
Compare all specifications:
| 2003 Alfa Romeo 166 | 2007 Mazda 6 | |
| Make | Alfa Romeo | Mazda |
| Model | 166 | 6 |
| Year Released | 2003 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3177 cc | 2261 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 247 HP | 256 HP |
| Engine RPM | 6200 RPM | 5500 RPM |
| Torque | 289 Nm | 380 Nm |
| Torque RPM | 4800 RPM | 3000 RPM |
| Engine Bore Size | 93 mm | 87.6 mm |
| Engine Stroke Size | 78 mm | 94 mm |
| Engine Compression Ratio | 10.5:1 | 9.5:1 |
| Acceleration 0-100mph | 7.4 seconds | 6.6 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1540 kg | 1354 kg |
| Vehicle Length | 4730 mm | 4680 mm |
| Vehicle Width | 1810 mm | 1790 mm |
| Vehicle Height | 1420 mm | 1440 mm |
| Wheelbase Size | 2550 mm | 2680 mm |
| Fuel Tank Capacity | 69 L | 60 L |
