Technical specifications
| Clear list | BMW 6er | Porsche Boxster |
| Totals | BMW 6er 3.0 (640i Cabrio) × | Porsche Boxster 3.4 S × |
| Mark | BMW | Porsche |
| Model | 6er 3.0 (640i Cabrio) | Boxster 3.4 S |
| Year | 2011 | 2012 |
| Number of doors/seats | 2/4 | 2/2 |
| Body type | Cabriolet | Roadster |
| Unladen Weight | 1915 | 1340 (1370) |
| Gross Weight Limit | 2290 | 1655 (1685) |
| Top Speed, km/h | 250 | 279 (277) |
| Acceleration 0-100 kph | 5.5 | 5.1 (5) |
| Minimum turning radius, m | 5.7 | - |
| Cargo Volume, min/max, L | 300/350 | 150+130 |
| Dimensions specifications, mm | BMW 6er 3.0 (640i Cabrio) × | Porsche Boxster 3.4 S × |
| Length | 4894 | 4374 |
| Width | 1894 | 1801 |
| Height | 1365 | 1282 |
| Wheelbase | 2855 | 2475 |
| Front/rear Track | 1600/1657 | - |
| Ground clearance | - | - |
| Engine specifications | BMW 6er 3.0 (640i Cabrio) × | Porsche Boxster 3.4 S × |
| Type | Gasoline Direct Injection, turbocharging | Gasoline Direct Injection |
| Displacement, cm3 | 2979 | 3436 |
| Compression ratio | 10.2 | 12.5 |
| Number and arrangement of cylinders | 6 cylinders, in-line | 6 cylinders, boxer |
| The diameter of the cylinder x stroke, mm | 84х89.6 | 97х77.5 |
| Number of valves | 24 | 24 |
| Power, hp/rpm | 320/5800-6000 | 315/6700 |
| Max torque, Nm/RPM | 450/1300-4500 | 360/4500-5800 |
| Transmission specifications | BMW 6er 3.0 (640i Cabrio) × | Porsche Boxster 3.4 S × |
| Gearbox | 8-speed automatic | 6-speed manual / 7-speed automatic PDK |
| Drive Type | Rear wheel drive | Rear wheel drive |
| Suspension specifications | BMW 6er 3.0 (640i Cabrio) × | Porsche Boxster 3.4 S × |
| Front | Upper and lower A-arm (double wishbone) | MacPherson strut |
| Rear | multi-link suspensions | MacPherson strut |
| Tire Size | 225/55 R17 | 235/40 R19, 265/40 R19 |
| Disk | 5x120 ET20 d72.6
| 5x130 ET50 d71.5
|
| Brakes specifications | BMW 6er 3.0 (640i Cabrio) × | Porsche Boxster 3.4 S × |
| Front | Ventilated discs | Ventilated discs |
| Rear | Ventilated discs | Ventilated discs |
| Fuel consumption specifications, L/100 km | BMW 6er 3.0 (640i Cabrio) × | Porsche Boxster 3.4 S × |
| City | 10.7 | 12.7 (11.4) |
| Highway | 6 | 7.1 (6.3) |
| Combined | 7.8 | 9 (8.2) |
| Fuel | 95 | 98 |
| Tank, L | 70 | 64 |
| Clear list | BMW 6er | Porsche Boxster |
