2003 Buick Regal vs. 2010 Infiniti M
To start off, 2010 Infiniti M is newer by 7 year(s). Which means there will be less support and parts availability for 2003 Buick Regal. In addition, the cost of maintenance, including insurance, on 2003 Buick Regal would be higher. At 4,493 cc (8 cylinders), 2010 Infiniti M is equipped with a bigger engine. In terms of performance, 2010 Infiniti M (325 HP @ 6400 RPM) has 128 more horse power than 2003 Buick Regal. (197 HP @ 5200 RPM) In normal driving conditions, 2010 Infiniti M should accelerate faster than 2003 Buick Regal. With that said, vehicle weight also plays an important factor in acceleration. 2010 Infiniti M weights approximately 159 kg more than 2003 Buick Regal. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2010 Infiniti M is four wheel drive (4WD), it will have significant more traction and grip than 2003 Buick Regal. In wet, icy, snow, or gravel driving conditions, 2010 Infiniti M 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, 2010 Infiniti M (456 Nm @ 4000 RPM) has 144 more torque (in Nm) than 2003 Buick Regal. (312 Nm @ 4000 RPM). This means 2010 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2003 Buick Regal.
Compare all specifications:
| 2003 Buick Regal | 2010 Infiniti M | |
| Make | Buick | Infiniti |
| Model | Regal | M |
| Year Released | 2003 | 2010 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3789 cc | 4493 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 197 HP | 325 HP |
| Engine RPM | 5200 RPM | 6400 RPM |
| Torque | 312 Nm | 456 Nm |
| Torque RPM | 4000 RPM | 4000 RPM |
| Engine Compression Ratio | 9.4:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1560 kg | 1719 kg |
| Vehicle Length | 4990 mm | 4940 mm |
| Vehicle Width | 1850 mm | 1810 mm |
| Vehicle Height | 1440 mm | 1530 mm |
| Wheelbase Size | 2780 mm | 2910 mm |
| Fuel Tank Capacity | 64 L | 76 L |
