2003 BMW X3 vs. 2013 BMW 5 Series
To start off, 2013 BMW 5 Series is newer by 10 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 4,395 cc (8 cylinders), 2013 BMW 5 Series is equipped with a bigger engine. In terms of performance, 2013 BMW 5 Series (439 HP @ 6400 RPM) has 254 more horse power than 2003 BMW X3. (185 HP @ 6000 RPM) In normal driving conditions, 2013 BMW 5 Series should accelerate faster than 2003 BMW X3. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 5 Series weights approximately 380 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.
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, 2013 BMW 5 Series (651 Nm @ 4500 RPM) has 406 more torque (in Nm) than 2003 BMW X3. (245 Nm @ 3500 RPM). This means 2013 BMW 5 Series will have an easier job in driving up hills or pulling heavy equipment than 2003 BMW X3.
Compare all specifications:
| 2003 BMW X3 | 2013 BMW 5 Series | |
| Make | BMW | BMW |
| Model | X3 | 5 Series |
| Year Released | 2003 | 2013 |
| Body Type | SUV | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 4395 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 185 HP | 439 HP |
| Engine RPM | 6000 RPM | 6400 RPM |
| Torque | 245 Nm | 651 Nm |
| Torque RPM | 3500 RPM | 4500 RPM |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 75 mm | 89 mm |
| Engine Compression Ratio | 10.5:1 | 10.0 :1 |
| Drive Type | 4WD | AWD |
| Transmission Type | Automatic | 8-speed automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1840 kg | 2220 kg |
| Vehicle Length | 4570 mm | 4999 mm |
| Vehicle Width | 1860 mm | 2132 mm |
| Vehicle Height | 1680 mm | 1559 mm |
| Wheelbase Size | 2800 mm | 3070 mm |
| Fuel Tank Capacity | 67 L | 70 L |
