2005 Buick Regal vs. 2003 Mazda 6
To start off, 2005 Buick Regal is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Mazda 6. In addition, the cost of maintenance, including insurance, on 2003 Mazda 6 would be higher. At 3,791 cc (6 cylinders), 2005 Buick Regal is equipped with a bigger engine. In terms of performance, 2005 Buick Regal (197 HP @ 5200 RPM) has 58 more horse power than 2003 Mazda 6. (139 HP @ 6000 RPM). In normal driving conditions, 2005 Buick Regal should accelerate faster than 2003 Mazda 6. With that said, vehicle weight also plays an important factor in acceleration. 2005 Buick Regal weights approximately 210 kg more than 2003 Mazda 6. 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, 2005 Buick Regal (311 Nm @ 4000 RPM) has 130 more torque (in Nm) than 2003 Mazda 6. (181 Nm @ 4500 RPM). This means 2005 Buick Regal will have an easier job in driving up hills or pulling heavy equipment than 2003 Mazda 6.
Compare all specifications:
| 2005 Buick Regal | 2003 Mazda 6 | |
| Make | Buick | Mazda |
| Model | Regal | 6 |
| Year Released | 2005 | 2003 |
| Body Type | Sedan | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3791 cc | 1998 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 197 HP | 139 HP |
| Engine RPM | 5200 RPM | 6000 RPM |
| Torque | 311 Nm | 181 Nm |
| Torque RPM | 4000 RPM | 4500 RPM |
| Engine Compression Ratio | 9.4:1 | 11.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Front | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1560 kg | 1350 kg |
| Vehicle Length | 4990 mm | 4710 mm |
| Vehicle Width | 1850 mm | 1790 mm |
| Vehicle Height | 1440 mm | 1490 mm |
| Wheelbase Size | 2780 mm | 2610 mm |
| Fuel Tank Capacity | 64 L | 64 L |
