The BMW 6 Series contains the brand's largest coupe and convertible, both of which are offered in 640i and 650i designations. The 640i range is powered by a twin-turbo six-cylinder engine and comes with rear or all-wheel drive. The stylish 640i is marked by a long hood, sloping roofline, and short rear deck. The line includes the 640i Gran Coupe, which is actually a four-door sedan with a coupe-like profile.

Pricing and Equipment

BMW 640

The 2017 BMW 640i benefits from several changes, including an updated iDrive infotainment system, wireless phone charging, and a WiFi hotspot. Last year, the 6 Series received a minor facelift.

BMW offers one engine choice for the 2017 640i: a 3-liter twin-turbo six-cylinder making 315 horsepower and 330 pound-feet of torque. This engine is paired with an eight-speed automatic transmission with Sport and Manual shift modes. Steering wheel-mounted paddle shifters are included.

BMW says the rear-wheel drive model has a zero-to-60 mph time of 5.3 seconds. The all-wheel drive xDrive model makes that sprint in 5.1 seconds.

Pricing for the 640i’s trim is as follows:

The 640i coupe starts at $77,600, or $80,600 with the xDrive system. Choose the Grand Coupe and you’ll pay $79,800 for the rear-drive model or $82,800 for the xDrive version. The convertible costs $85,100; add $3,000 for xDrive.

Standard equipment includes adaptive LED headlights, automatic high beams, LED fog lights, headlight washers, power folding and heated side mirrors, and 18-inch light alloy wheels set within run-flat all-season tires.

BMW 640

Inside, the 2017 640i offers 10-way power adjustable front seats with four-way lumbar support. Dakota leather upholstery covers the seats, door panels, and shift boot. All models are trimmed in gray poplar wood.

All models come with full power accessories, heated front seats, a nine-speaker audio system, HD and satellite radio, a WiFi hotspot, a wireless phone charger, a rearview camera, and navigation.

Upgrades include M Sport Edition trim ($4,800), which includes a head-up display, a dynamic digital instrument cluster, automatic soft-close doors, ventilated front seats with contrasting stitching, and a leather-wrapped dashboard.

The available Black Accent package ($4,000) brings in a special wheel design and black leather interior trim. Other upgrades include full Merino leather ($3,500), metallic paint ($1,950-$3,600), an Executive package ($3,300), a Cold Weather package ($400), and a Driver Assistance Plus package ($1,700). For a very personal touch, you can choose the BMW Individual Composition package ($6,000).

Package prices may vary according to trim and are subject to change. Vehicle prices do not reflect a $995 destination charge.

Performance Pros

BMW 640
  • The V6 engine offers inspiring performance, although it doesn’t match the V8 in thrust or note. Unless you prize a more powerful model, the 640i line should be more than sufficient.
  • The 640i offers quick, precise steering along with smooth and satisfying handling. Choose xDrive for improved handling through the turns.
  • BMW’s Driving Dynamics Control manages steering feel, throttle response, transmission operation, and suspension settings to deliver a more engaging driving experience. You have a choice of three driving modes.
  • Fuel economy comes in at an EPA-rated 21 mpg in the city and 30 mpg on the highway. These are excellent numbers for a coupe powered by a potent six-cylinder engine and weighing more than 4,000 pounds.

Performance Cons

  • The 640i tips the scales at two tons. That weight is keenly felt when maneuvering the coupe. It isn’t as light on its feet as the 4 Series, which becomes especially evident on twisty roads.

Interior Pros

  • Exemplary fit and finish, choice materials, and a carefully constructed cabin are hallmarks of BMW. The 6 Series successfully upholds and advances that reputation.
  • Trunk space is usually an afterthought on coupes. Not so with the BMW 640i. It serves up 13 cubic feet of covered storage space.

Interior Cons

  • Tall passengers will find passage in and out of this coupe means carefully protecting one’s head. That’s a natural consequence of the body style and nothing else.
  • The rear seats are best left to young children or not used at all in either two-door models. Opting for the Gran Coupe, however, eliminates that problem.

The Most Pleasant Surprise

The convertible’s wind deflector protects the front passengers from drafts at the neck and shoulders. This means losing the second-row seating area, but that loss is well worth what you get in exchange.

The Least Pleasant Surprise

Maybe “surprise” isn’t the best word to describe how quickly your final tally can push well above the base model’s $77,600 sticker price. Choose most every package and individual upgrade and you’ll push very close to a six-figure total price.

The Bottom Line

Perhaps your primary dilemma when choosing the 640i is whether to stick with rear-wheel drive or opt for xDrive. Beyond that, your choice depends on which body style is best suited for you. Every configuration is a real head turner, delivering the style and performance that unequivocally represents BMW.