2006 BMW 645 vs. 2005 Smart Coupe
To start off, 2006 BMW 645 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 Smart Coupe. In addition, the cost of maintenance, including insurance, on 2005 Smart Coupe would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 268 more horse power than 2005 Smart Coupe. (60 HP @ 5250 RPM). In normal driving conditions, 2006 BMW 645 should accelerate faster than 2005 Smart Coupe. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 1106 kg more than 2005 Smart Coupe. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2006 BMW 645 (450 Nm @ 3600 RPM) has 355 more torque (in Nm) than 2005 Smart Coupe. (95 Nm @ 2000 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2005 Smart Coupe. 2005 Smart Coupe has automatic transmission and 2006 BMW 645 has manual transmission. 2006 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Smart Coupe will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW 645 | 2005 Smart Coupe | |
| Make | BMW | Smart |
| Model | 645 | Coupe |
| Year Released | 2006 | 2005 |
| Body Type | Convertible | Coupe |
| Engine Size | 4398 cc | 698 cc |
| Engine Cylinders | 8 cylinders | 3 cylinders |
| Engine Type | V | in-line |
| Horse Power | 328 HP | 60 HP |
| Engine RPM | 6100 RPM | 5250 RPM |
| Torque | 450 Nm | 95 Nm |
| Torque RPM | 3600 RPM | 2000 RPM |
| Engine Compression Ratio | 10.0:1 | 9.0:1 |
| Top Speed | 250 km/hour | 135 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 15.8 seconds |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1836 kg | 730 kg |
| Wheelbase Size | 2790 mm | 1820 mm |
| Fuel Consumption Overall | 12.8 L/100km | 4.7 L/100km |
| Fuel Tank Capacity | 70 L | 33 L |
