2003 BMW 645 vs. 2003 Smart Roadster
To start off, both 2003 BMW 645 and 2003 Smart Roadster were released in the same year (2003). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (310 HP @ 6000 RPM) has 229 more horse power than 2003 Smart Roadster. (81 HP @ 5250 RPM). In normal driving conditions, 2003 BMW 645 should accelerate faster than 2003 Smart Roadster. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 813 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.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 645 (450 Nm @ 3600 RPM) has 340 more torque (in Nm) than 2003 Smart Roadster. (110 Nm @ 2250 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2003 Smart Roadster. 2003 BMW 645 has automatic transmission and 2003 Smart Roadster has manual transmission. 2003 Smart Roadster will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
2003 BMW 645 | 2003 Smart Roadster | |
Make | BMW | Smart |
Model | 645 | Roadster |
Year Released | 2003 | 2003 |
Body Type | Coupe | Coupe |
Engine Position | Front | Rear |
Engine Size | 4398 cc | 698 cc |
Engine Cylinders | 8 cylinders | 3 cylinders |
Engine Type | V | in-line |
Valves per Cylinder | 4 valves | 2 valves |
Horse Power | 310 HP | 81 HP |
Engine RPM | 6000 RPM | 5250 RPM |
Torque | 450 Nm | 110 Nm |
Torque RPM | 3600 RPM | 2250 RPM |
Engine Bore Size | 92 mm | 66.5 mm |
Engine Stroke Size | 82.7 mm | 67 mm |
Engine Compression Ratio | 10.5:1 | 9.0:1 |
Top Speed | 250 km/hour | 180 km/hour |
Drive Type | Rear | Rear |
Transmission Type | Automatic | Manual |
Number of Seats | 4 seats | 2 seats |
Number of Doors | 2 doors | 2 doors |
Vehicle Weight | 1698 kg | 885 kg |
Vehicle Length | 4830 mm | 3430 mm |
Vehicle Width | 1860 mm | 1620 mm |
Vehicle Height | 1380 mm | 1200 mm |
Wheelbase Size | 2790 mm | 2370 mm |
Fuel Consumption Overall | 10.9 L/100km | 5.1 L/100km |