Beginning with the 2014 model year, all-wheel-drive versions of the 640 coupe and convertible are available along with an M Sport Edition with a collection of appearance and convenience upgrades. In addition, an upgraded Driver Assistance Plus package adds automatic braking functions to the lane-departure warning and the adaptive cruise control systems.

The only component of your 2014 640 that doesn’t allow you to make a choice is the power source. This turbocharged 3-liter inline six-cylinder engine produces up to 315 horsepower and is paired with an eight-speed automatic transmission with sport and manual modes plus steering-wheel-mounted paddle shifters. An automatic start-stop function and a regenerative braking system help improve fuel economy.

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Two key decisions are body style—coupe or convertible—and drivetrain—rear-wheel drive or all-wheel drive:

• Rear-wheel drive coupe
• All-wheel drive coupe
• Rear-wheel drive convertible
• All-wheel drive convertible

Deciding what you want in your new 640’s appearance gets more complicated:

• Exterior: There are 10 standard color choices in metallic and non-metallic finishes and five additional choices through the BMW Individual packages. Two more colors are available only if you also order the M Sport Package.
• Upholstery: The 640’s standard upholstery is Dakota leather in a range of three color choices. An upgrade to Nappa leather requires the additional purchase of multicontour seats and the extension of the leather to the instrument-panel finish. In the BMW Individual group of choices, you can select from five color choices in Merino leather.
• Interior trims: Three standard trim choices are supplemented by three more in the BMW Individual packages.

You can further individualize your 640 with several packaged and individual options:

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• The Executive package adds concierge services, a head-up display, and multicontour ventilated seats. There is also a choice of BMW’s premium sound system or a Bang & Olufsen system for an additional cost, both with 16 speakers.
• With the M Sport package you can add an aerodynamic kit, an Alcantara headliner in a choice of colors and a performance M steering wheel. Three wheel choices and the two additional exterior color options round out this package.
• The Individual Composition package includes the Individual exterior, upholstery and trim choices, plus shadowline exterior trim and three wheel selections.
• Additional packages offer such items as a heated steering wheel, adaptive headlights and electronic driver-assistance and safety systems.

Options available outside of the packages include:

• The Bang & Olufsen sound system
• Parking assist
• Power rear sunshade (offered for the coupe only)
• Active front seats
• Adaptive cruise control and lane-departure warning systems
• Night vision with pedestrian detection