2005 Porsche 911 vs. 2003 Smart Roadster
To start off, 2005 Porsche 911 is newer by 2 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 3,600 cc (6 cylinders), 2005 Porsche 911 is equipped with a bigger engine. In terms of performance, 2005 Porsche 911 (414 HP @ 6000 RPM) has 333 more horse power than 2003 Smart Roadster. (81 HP @ 5250 RPM). In normal driving conditions, 2005 Porsche 911 should accelerate faster than 2003 Smart Roadster. With that said, vehicle weight also plays an important factor in acceleration. 2005 Porsche 911 weights approximately 855 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 2005 Porsche 911 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, 2005 Porsche 911 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, 2005 Porsche 911 (560 Nm @ 2700 RPM) has 450 more torque (in Nm) than 2003 Smart Roadster. (110 Nm @ 2250 RPM). This means 2005 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2003 Smart Roadster.
Compare all specifications:
| 2005 Porsche 911 | 2003 Smart Roadster | |
| Make | Porsche | Smart |
| Model | 911 | Roadster |
| Year Released | 2005 | 2003 |
| Body Type | Convertible | Coupe |
| Engine Position | Rear | Rear |
| Engine Size | 3600 cc | 698 cc |
| Engine Cylinders | 6 cylinders | 3 cylinders |
| Engine Type | boxer | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 414 HP | 81 HP |
| Engine RPM | 6000 RPM | 5250 RPM |
| Torque | 560 Nm | 110 Nm |
| Torque RPM | 2700 RPM | 2250 RPM |
| Engine Bore Size | 100 mm | 66.5 mm |
| Engine Stroke Size | 76.4 mm | 67 mm |
| Engine Compression Ratio | 9.4:1 | 9.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 305 km/hour | 180 km/hour |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1740 kg | 885 kg |
| Vehicle Length | 4440 mm | 3430 mm |
| Vehicle Width | 1840 mm | 1620 mm |
| Vehicle Height | 1300 mm | 1200 mm |
| Wheelbase Size | 2360 mm | 2370 mm |
| Fuel Consumption Overall | 12.8 L/100km | 5.1 L/100km |
