2005 Smart ForTwo vs. 2007 BMW 645
To start off, 2007 BMW 645 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Smart ForTwo. In addition, the cost of maintenance, including insurance, on 2005 Smart ForTwo would be higher. At 4,398 cc (8 cylinders), 2007 BMW 645 is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP @ 6100 RPM) has 288 more horse power than 2005 Smart ForTwo. (40 HP @ 4200 RPM) In normal driving conditions, 2007 BMW 645 should accelerate faster than 2005 Smart ForTwo. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 875 kg more than 2005 Smart ForTwo. 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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 350 more torque (in Nm) than 2005 Smart ForTwo. (100 Nm @ 1800 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 Smart ForTwo. 2007 BMW 645 has automatic transmission and 2005 Smart ForTwo has manual transmission. 2005 Smart ForTwo will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 Smart ForTwo | 2007 BMW 645 | |
| Make | Smart | BMW |
| Model | ForTwo | 645 |
| Year Released | 2005 | 2007 |
| Body Type | Convertible | Coupe |
| Engine Position | Rear | Front |
| Engine Size | 797 cc | 4398 cc |
| Engine Cylinders | 3 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 40 HP | 328 HP |
| Engine RPM | 4200 RPM | 6100 RPM |
| Torque | 100 Nm | 450 Nm |
| Torque RPM | 1800 RPM | 3600 RPM |
| Engine Compression Ratio | 18.5:1 | 10.0:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Top Speed | 135 km/hour | 245 km/hour |
| Acceleration 0-100mph | 19.8 seconds | 5.6 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 815 kg | 1690 kg |
| Vehicle Length | 2510 mm | 4830 mm |
| Vehicle Width | 1540 mm | 1860 mm |
| Vehicle Height | 1560 mm | 1380 mm |
| Wheelbase Size | 1820 mm | 2790 mm |
| Fuel Consumption Overall | 3.4 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 22 L | 70 L |
