2003 BMW X3 vs. 2004 BMW M3
To start off, 2004 BMW M3 is newer by 1 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 3,169 cc (6 cylinders), 2004 BMW M3 is equipped with a bigger engine. In terms of performance, 2004 BMW M3 (317 HP @ 7250 RPM) has 132 more horse power than 2003 BMW X3. (185 HP @ 6000 RPM) In normal driving conditions, 2004 BMW M3 should accelerate faster than 2003 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW X3 weights approximately 65 kg more than 2004 BMW M3.
Because 2003 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2004 BMW M3. 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, 2004 BMW M3 (355 Nm) has 110 more torque (in Nm) than 2003 BMW X3. (245 Nm). This means 2004 BMW M3 will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW X3.
Compare all specifications:
| 2003 BMW X3 | 2004 BMW M3 | |
| Make | BMW | BMW |
| Model | X3 | M3 |
| Year Released | 2003 | 2004 |
| Body Type | SUV | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 3169 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 185 HP | 317 HP |
| Engine RPM | 6000 RPM | 7250 RPM |
| Torque | 245 Nm | 355 Nm |
| Engine Bore Size | 84 mm | 87 mm |
| Engine Stroke Size | 75 mm | 91 mm |
| Engine Compression Ratio | 10.5:1 | 11.5:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1840 kg | 1775 kg |
| Vehicle Length | 4570 mm | 4500 mm |
| Vehicle Width | 1860 mm | 1790 mm |
| Vehicle Height | 1680 mm | 1380 mm |
| Wheelbase Size | 2800 mm | 2790 mm |
| Fuel Tank Capacity | 67 L | 63 L |
