2007 BMW X5 vs. 2003 Buick Regal
To start off, 2007 BMW X5 is newer by 4 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 3,789 cc (6 cylinders), 2003 Buick Regal is equipped with a bigger engine. In terms of performance, 2007 BMW X5 (202 HP @ 4000 RPM) has 5 more horse power than 2003 Buick Regal. (197 HP @ 5200 RPM). In normal driving conditions, 2007 BMW X5 should accelerate faster than 2003 Buick Regal. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW X5 weights approximately 595 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 2007 BMW X5 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, 2007 BMW X5 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, 2007 BMW X5 (480 Nm @ 2000 RPM) has 168 more torque (in Nm) than 2003 Buick Regal. (312 Nm @ 4000 RPM). This means 2007 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2003 Buick Regal.
Compare all specifications:
| 2007 BMW X5 | 2003 Buick Regal | |
| Make | BMW | Buick |
| Model | X5 | Regal |
| Year Released | 2007 | 2003 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2993 cc | 3789 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 202 HP | 197 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 480 Nm | 312 Nm |
| Torque RPM | 2000 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 97 mm |
| Engine Stroke Size | 88 mm | 86 mm |
| Engine Compression Ratio | 18.0:1 | 9.4:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2155 kg | 1560 kg |
| Vehicle Length | 4670 mm | 4990 mm |
| Vehicle Width | 1880 mm | 1850 mm |
| Vehicle Height | 1720 mm | 1440 mm |
| Wheelbase Size | 2830 mm | 2780 mm |
| Fuel Tank Capacity | 93 L | 64 L |
