Technical specifications
| Clear list | BMW 6er | BMW 4er M |
| Totals | BMW 6er 4.4 (650i Cabrio) × | BMW 4er M 3.0 Cabrio × |
| Mark | BMW | BMW |
| Model | 6er 4.4 (650i Cabrio) | 4er M 3.0 Cabrio |
| Year | 2011 | 2014 |
| Number of doors/seats | 2/4 | 2/4 |
| Body type | Cabriolet | Cabriolet |
| Unladen Weight | 2015 | 1825 (1865) |
| Gross Weight Limit | 2390 | - |
| Top Speed, km/h | 250 | 250 (250) |
| Acceleration 0-100 kph | 4.6 | 4.6 (4.4) |
| Minimum turning radius, m | 5.7 | 6.1 |
| Cargo Volume, min/max, L | 300/350 | 220/370 |
| Dimensions specifications, mm | BMW 6er 4.4 (650i Cabrio) × | BMW 4er M 3.0 Cabrio × |
| Length | 4894 | 4671 |
| Width | 1894 | 1870 |
| Height | 1365 | 1386 |
| Wheelbase | 2855 | 2812 |
| Front/rear Track | 1600/1657 | 1579/1603 |
| Ground clearance | - | 116 |
| Engine specifications | BMW 6er 4.4 (650i Cabrio) × | BMW 4er M 3.0 Cabrio × |
| Type | Gasoline Direct Injection, turbocharging | Gasoline Direct Injection, turbocharging |
| Displacement, cm3 | 4395 | 2979 |
| Compression ratio | 10 | 10.2 |
| Number and arrangement of cylinders | V8 | 6 cylinders, in-line |
| The diameter of the cylinder x stroke, mm | 89х88.3 | 84х89.6 |
| Number of valves | 32 | 24 |
| Power, hp/rpm | 450/5500-6000 | 431/5500-7300 |
| Max torque, Nm/RPM | 650/2000-4500 | 550/1850-5500 |
| Transmission specifications | BMW 6er 4.4 (650i Cabrio) × | BMW 4er M 3.0 Cabrio × |
| Gearbox | 8-speed automatic | 6-speed manual / 7-speed tiptronic |
| Drive Type | Rear wheel drive | Rear wheel drive |
| Suspension specifications | BMW 6er 4.4 (650i Cabrio) × | BMW 4er M 3.0 Cabrio × |
| Front | Upper and lower A-arm (double wishbone) | MacPherson strut |
| Rear | multi-link suspensions | multi-link suspensions |
| Tire Size | 245/45 R18 | 255/40 R18, 275/40 R18 |
| Disk | 5x120 ET20 d72.6
| 5x120 ET20 d72.6
|
| Brakes specifications | BMW 6er 4.4 (650i Cabrio) × | BMW 4er M 3.0 Cabrio × |
| Front | Ventilated discs | Ventilated discs |
| Rear | Ventilated discs | Ventilated discs |
| Fuel consumption specifications, L/100 km | BMW 6er 4.4 (650i Cabrio) × | BMW 4er M 3.0 Cabrio × |
| City | 12.4 | 12.4 (11.5) |
| Highway | 6.9 | 7.2 (7.1) |
| Combined | 8.9 | 9.1 (8.7) |
| Fuel | 95 | 95 |
| Tank, L | 70 | 60 |
| Clear list | BMW 6er | BMW 4er M |
