2006 BMW X3 vs. 2003 Smart Roadster
To start off, 2006 BMW X3 is newer by 3 year(s). Which means there will be less support and parts availability for 2003 Smart Roadster. In addition, the cost of maintenance, including insurance, on 2003 Smart Roadster would be higher. At 1,995 cc (4 cylinders), 2006 BMW X3 is equipped with a bigger engine. In terms of performance, 2006 BMW X3 (148 HP @ 4000 RPM) has 67 more horse power than 2003 Smart Roadster. (81 HP @ 5250 RPM). In normal driving conditions, 2006 BMW X3 should accelerate faster than 2003 Smart Roadster. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X3 weights approximately 1040 kg more than 2003 Smart Roadster. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW X3 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Smart Roadster. In wet, icy, snow, or gravel driving conditions, 2006 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, 2006 BMW X3 (330 Nm @ 2000 RPM) has 220 more torque (in Nm) than 2003 Smart Roadster. (110 Nm @ 2250 RPM). This means 2006 BMW X3 will have an easier job in driving up hills or pulling heavy equipment than 2003 Smart Roadster.
Compare all specifications:
| 2006 BMW X3 | 2003 Smart Roadster | |
| Make | BMW | Smart |
| Model | X3 | Roadster |
| Year Released | 2006 | 2003 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 1995 cc | 698 cc |
| Engine Cylinders | 4 cylinders | 3 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 148 HP | 81 HP |
| Engine RPM | 4000 RPM | 5250 RPM |
| Torque | 330 Nm | 110 Nm |
| Torque RPM | 2000 RPM | 2250 RPM |
| Engine Compression Ratio | 17.0:1 | 9.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 193 km/hour | 180 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1925 kg | 885 kg |
| Vehicle Length | 4570 mm | 3430 mm |
| Vehicle Width | 1860 mm | 1620 mm |
| Vehicle Height | 1680 mm | 1200 mm |
| Wheelbase Size | 2800 mm | 2370 mm |
| Fuel Consumption Overall | 7.2 L/100km | 5.1 L/100km |
