2013 BMW 6 series Gran Coupe 650i vs. 2013 BMW 6 series Convertible 640i
To start off, both 2013 BMW 6 series Gran Coupe 650i and 2013 BMW 6 series Convertible 640i were released in the same year (2013). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,395 cc (8 cylinders), 2013 BMW 6 series Gran Coupe 650i is equipped with a bigger engine. In terms of performance, 2013 BMW 6 series Gran Coupe 650i (437 HP @ 5500 RPM) has 126 more horse power than 2013 BMW 6 series Convertible 640i. (311 HP @ 6000 RPM). In normal driving conditions, 2013 BMW 6 series Gran Coupe 650i should accelerate faster than 2013 BMW 6 series Convertible 640i. With that said, vehicle weight also plays an important factor in acceleration. 2013 BMW 6 series Convertible 640i weights approximately 71 kg more than 2013 BMW 6 series Gran Coupe 650i.
Because 2013 BMW 6 series Gran Coupe 650i is all wheel drive (AWD), it will have significant more traction and grip than 2013 BMW 6 series Convertible 640i. In wet, icy, snow, or gravel driving conditions, 2013 BMW 6 series Gran Coupe 650i 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, 2013 BMW 6 series Gran Coupe 650i (651 Nm @ 4500 RPM) has 204 more torque (in Nm) than 2013 BMW 6 series Convertible 640i. (447 Nm @ 4500 RPM). This means 2013 BMW 6 series Gran Coupe 650i will have an easier job in driving up hills or pulling heavy equipment than 2013 BMW 6 series Convertible 640i.
Compare all specifications:
| 2013 BMW 6 series Gran Coupe 650i | 2013 BMW 6 series Convertible 640i | |
| Make | BMW | BMW |
| Model | 6 series | 6 series |
| Year Released | 2013 | 2013 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4395 cc | 2979 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 437 HP | 311 HP |
| Engine RPM | 5500 RPM | 6000 RPM |
| Torque | 651 Nm | 447 Nm |
| Torque RPM | 4500 RPM | 4500 RPM |
| Engine Bore Size | 89 mm | 84 mm |
| Engine Stroke Size | 89 mm | 89 mm |
| Engine Compression Ratio | 10.0 :1 | 10.2 :1 |
| Fuel Type | Gasoline | Gasoline |
| Top Speed | 250 km/hour | 250 km/hour |
| Acceleration 0-100mph | 4.5 seconds | 5.5 seconds |
| Drive Type | AWD | Rear |
| Transmission Type | 8-speed shiftable automatic | 8-speed automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 2009 kg | 2080 kg |
| Vehicle Length | 5009 mm | 4897 mm |
| Vehicle Width | 2081 mm | 1895 mm |
| Vehicle Height | 1392 mm | 1364 mm |
| Wheelbase Size | 2968 mm | 2855 mm |
| Fuel Tank Capacity | 70 L | 70 L |
