BMW 6 Series Gran Coupé 2012–2018 car dimensions: 5007 mm long, 1894 mm wide and 1392 mm high. Boot space with the seats up is 460 litres.
The cabin has a driver-focused layout with iDrive controller and flatscreen Control Display. Two-zone automatic climate control is standard. Cruise control with braking function comes as standard. Front and rear parking sensors are standard. Reversing camera is optional. Blind spot warning, lane departure warning and camera-based collision warning with braking are optional extras.
Boot space is 460 litres with seats up. Rear seats fold to give 1265 litres. Through-loading is available.
Official data lists no permitted trailer loads. Payload is 570 kg. The car is a luxury grand coupe with no heavy-duty features noted for work use.
The cabin feels luxurious and sporty with Dakota leather upholstery and electrically adjustable front seats with memory as standard. Heated front seats come fitted. Rear space benefits from the long wheelbase for good legroom in the 4+1 layout, with comfortable seats offering lateral support. Optional comfort seats add multi-contour adjustments including bolsters, plus ventilation and active oscillating function for longer trips. A glass sunroof and climate comfort laminated glass are available to brighten and quiet the interior, while 4-zone climate control and heated rear seats can be added.
Petrol 3.0-litre six-cylinder TwinPower Turbo engine.
Combined fuel use 7.7-7.9 l/100 km depending on tyres.
Oil service every 30 000 km or 24 months.
Standard safety includes front, side and head airbags for all rows, DSC with ABS, crash-activated front head restraints, runflat tyres and ISOFIX.
The 640i runs on petrol with the TwinPower Turbo straight-six. Official combined consumption sits between 7.7 and 7.9 litres per 100 km according to tyre choice, with a 70-litre tank. ECO PRO mode and Auto Start-Stop help keep figures in check on the road.
Servicing follows BMW’s condition-based system. Oil and filter changes are typically due every 30 000 km or two years. Brake fluid is replaced every two years. Air and cabin filters, spark plugs and other items follow the onboard service indicator.
Safety kit is comprehensive as standard: driver and passenger airbags, front side airbags, head airbags covering front and rear, three-point belts with pretensioners and force limiters, crash-active head restraints, DSC stability control with ABS and traction aids, runflat tyres and a tyre defect indicator. ISOFIX mounts are fitted in the rear. Optional extras include adaptive headlights, night vision, head-up display and various warning systems.
Keeping the car means watching the service history for the N55 engine and eight-speed automatic. Regular oil changes on shorter intervals than the maximum help longevity. The aluminium and composite body parts keep weight down but need care in any repairs.
Length 5007 mm, Width 1894 mm, Height 1392 mm, Wheelbase 2968 mm (6 Series Gran Coupé 2012–2018)
Sources: manufacturer data, BMW Media Information, Specifications of the BMW 6 Series Gran Coupé, 05/2012 , BMW 640i Gran Coupé technical data, RON 91), The same document specifies xDrive only on the 650i, so the 640i is the rear-wheel-drive model.