2003 BMW X3 vs. 2005 Buick Rainier
To start off, 2005 Buick Rainier is newer by 2 year(s). Which means there will be less support and parts availability for 2003 BMW X3. In addition, the cost of maintenance, including insurance, on 2003 BMW X3 would be higher. At 4,163 cc (6 cylinders), 2005 Buick Rainier is equipped with a bigger engine. In terms of performance, 2005 Buick Rainier (276 HP @ 5200 RPM) has 75 more horse power than 2003 BMW X3. (201 HP @ 4000 RPM) In normal driving conditions, 2005 Buick Rainier should accelerate faster than 2003 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2005 Buick Rainier weights approximately 74 kg more than 2003 BMW X3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Buick Rainier. In wet, icy, snow, or gravel driving conditions, 2003 BMW X3 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, 2003 BMW X3 (410 Nm) has 23 more torque (in Nm) than 2005 Buick Rainier. (387 Nm). This means 2003 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2005 Buick Rainier.
Compare all specifications:
| 2003 BMW X3 | 2005 Buick Rainier | |
| Make | BMW | Buick |
| Model | X3 | Rainier |
| Year Released | 2003 | 2005 |
| Body Type | SUV | SUV |
| Engine Position | Front | Front |
| Engine Size | 2995 cc | 4163 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 201 HP | 276 HP |
| Engine RPM | 4000 RPM | 5200 RPM |
| Torque | 410 Nm | 387 Nm |
| Engine Bore Size | 84 mm | 93 mm |
| Engine Stroke Size | 90 mm | 102 mm |
| Engine Compression Ratio | 17.0:1 | 10.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1930 kg | 2004 kg |
| Vehicle Length | 4570 mm | 4920 mm |
| Vehicle Width | 1860 mm | 1920 mm |
| Vehicle Height | 1680 mm | 1900 mm |
| Wheelbase Size | 2730 mm | 2900 mm |
| Fuel Consumption | 7.3 L/100km | 11.2 L/100km |
| Fuel Consumption City | 12.1 L/100km | 14.7 L/100km |
| Fuel Consumption Overall | 9.1 L/100km | 13.1 L/100km |
| Fuel Tank Capacity | 67 L | 83 L |
