Bmw 640i F06

[Aide Broeckel]

Thiswebsite stores cookies on your computer. These cookie are used to collect information about how you interact with our website and allow us to remember you. We use this information in order to improve and customize your browsing experience and for analytics and metrics about our visitors both on this website and other media. To find out more about the cookies we use, see our Cookie Policy and our Privacy Policy.

The QuadraTherm 640i is the most accurate insertion-probe thermal mass flow meter for air / gas mass flow rate measurement on the market today, achieving gas mass flow rate accuracy never before possible, +/- 0.75% of reading above 50% of full scale. The QuadraTherm 640i air / gas mass flow meter marks an accuracy breakthrough in thermal dispersion technology achieving extreme precision with "percent of reading" accuracy, which for the first time rivals accuracies of Coriolis technology for measuring mass air flow rate and other gases.

The QuadraTherm thermal mass meter is also ideal for compliance for Boiler MACT regulations for inlet fuel measurements for area source boilers (40 CFR 63, subpart JJJJJJ) and for major source boilers (40 CFR 63, subpart DDDDD). Learn More.

Mass Air Flow Meter Operating Principle: Thermal dispersion technology provides direct mass air flow measurement featuring no pressure or temperature compensation needed; no moving parts; low pressure drop; and high turndown.

The 640i xDrive Gran Turismo is new to BMW's lineup this year. Previously, BMW's high-end hatchback was a 5-series car, but the German automaker decided to move the model a bit upscale while continuing to use the 5-series platform. The GT is also the least-expensive 6-series car, starting at $69,700 for the base model. The model I drove was maxed out with the M Sport package, Driving Assistance Plus, Dynamic Handling Package, and Executive Package. Add in the destination charge and a couple of other bits, and the sticker price is $84,010. That's a big number for a body type that is not that popular in the US.

The mechanical bits on the 640i GT are compelling. Powering the car is a 3.0-liter inline-six engine, turbocharged to crank out 335hp (250kW) and 332lb-ft (450Nm) of torque. It's gas only for the US, with a diesel engine available in other markets. An eight-speed automatic transmission is paired with all-wheel drive. The Dynamic Handling package adds active roll stabilization, height-adjustable air springs that are new to the 640i, dynamic shock control, and rear-wheel steering. All of that combines for a zero-to-60 speed of 5.1 seconds, according to BMW.

There are no sharp angles or unnecessary trim on the 640i GT. The front has what BMW calls air curtains and air breathers under the front license plate holder and below BMW's familiar kidney grill. A side-skirt design element runs nearly from wheel well to wheel well down near the bottom of the doors, providing a bit of visual interest from the side. Speaking of wheels, you'll roll away on 19-inch rims (alloy if you go with the M Sport package). All said, the 640i GT sports a very clean-looking design.

Frameless windows top the soft-close doors (with the Executive Package, at least, which also gets you BMW's excellent heads-up display). Slide into the comfortable, 16-way adjustable driver seat (with extendable thigh support) and the terrain will look familiar to anyone who has sat in the driver's seat of a BMW. The leather-wrapped steering wheel is heated, and behind it is BMW's instrument panel, which combines an HD display with physical elements of an analog dial. The dials themselves differ depending on whether you're in Eco, Sport, or Comfort mode. I love BMW's heads-up display, except when I'm wearing polarized sunglasses. When I'm not, not only can I see my speed and the local speed limit, but I can see GPS directions, radio stations, fuel warnings, and driver-assist info.

If nothing else, you'll be very comfortable inside the 640i xDrive GT. With lumbar support and bolster adjustment, the front seats are comfortable for longer trips. My only complaint is the cup holder at the bottom front of the door, which I noticed mostly when my lower leg would rest against it. There's plenty of headroom and leg room, both in the front and back seats. The rear seats are spacious, with suede pads on the headrests and a motor to adjust the backrest angle. Even with the gently sloped roof and moon roof, there's plenty of headroom for tall folks.

As an aside, the hatchback and height of the car makes for a perfect impromptu locker room. I had to referee a rugby match on a cold, wet Saturday morning, and I had forgotten to grab the fold-up lawn chair I use for changing. I popped the hatchback open, sat down, and put on my boots in relative comfort.

Driving the 640i xDrive GT is rewarding. The interior is quiet, blocking out most road noise. With the 5.1-second trip from zero to 60, the GT is very fast off the mark. Actually, it's always fast when you want it to be. It's one of those cars that makes you do a double-take at the speedometer because it doesn't feel like you're going that fast. Especially on highways; where I needed a bit of oomph to change lanes and pass a slowpoke, the GT felt instantly responsive.

BMW provides three ride options with the 640i: Comfort, Sport, and Eco. Put it in Comfort and the result is a stable and comfortable ride where you'll feel connected to the road while remaining blissfully unaware of pavement imperfections and the like. There's still plenty of zip when you open up the throttle, but the handling is more akin to that of a luxury sedan in Comfort mode.

Sport mode (actually, Sport and Sport+) is where it's at with the 640i. Not only is it blazing fast, with accelerated shift points, but the car is nice and grippy. And once you get over 75mph, the car will drop 0.39in via the adaptive suspension. Cornering is just plain fun, with the 640i leaning into curves with confidence. I may have even laughed out loud once or twice while tooling down a winding, hilly country road. The only downside to Sport mode for some will be the piped-in engine noise. I'm a sucker for the sound of a finely tuned engine and exhaust system, so I didn't mind it too much, but it ain't the real thing, either.

Unless you're down to your last gallon of gas and far away from a service station, don't bother with Eco mode. I tried it a couple of times, and not only did it make the car feel sluggish, but it sucked the joy out of the cockpit.

BMW has built a very nice car with the 640i xDrive GT. It's an excellent combination of style, comfort, and handling with little in the way of compromise. I'd even say that the 640i is BMW at its best, using its engineering experience and expertise to craft a vehicle that is an absolute blast to drive.

As a four-door version of the 6-series coupe, I was prepared to be dismissive, hewing to the definition of a coupe as only having two doors. BMW's clever use of the word "Gran" in front of "Coupe" gives some cover, but the real justification comes from looking at the thing. Its sleek, long and low body oozes a combination of sports car flair and big German cruiser. The rear doors do nothing to compromise the design, and the rear seats are more than adequate.

I did have faith that the Gran Coupe, with its 640i designation, could do quite well without a V-8, relying instead on BMW's 3-liter inline six-cylinder, assisted by a twin-scroll turbocharger. The coming of peak oil might dictate lower displacement, but BMW manages to crank 320 horsepower and 332 pound-feet of torque out of this engine, the turbo, direct injection, and some very clever valve engineering all extracting more power from every ounce of gasoline than ever before.

That faith was rewarded when, with every sport setting in the 640i Gran Coupe that could be activated online, I mashed the gas pedal and got a combination of satisfying push and lightly growling engine sound. Sure the V-8 in the 650i is going to turn in a better zero to 60 mph time, but BMW's stated time of 5.4 seconds for the run is more than adequate.

BMW builds a number of technologies into the car under the rubric of Efficient Dynamics, which includes regenerative braking, a trick borrowed from hybrid cars. There is no electric drive system in the car, but using braking energy to help keep the battery charged means less load on the generator. It also helps the car with its idle-stop feature, which turned off the engine when I was stopped at traffic lights.

Idle stop can be annoying, but I did not find it intrusive in the 640i Gran Coupe. The engine is relatively small, so the car does not shudder much when it starts up. Taking into account that releasing the brake pedal makes the engine start, I learned to anticipate the green light, making for no hesitation when I was ready to go. And I was impressed that even with the engine off, the stereo was still blasting away and the air conditioning blowing frigid air into the cabin.

As in other new BMW models, the 640i Gran Coupe's console hosts a rocker switch that let me switch among different drive modes, all the way from Sport Plus to Eco Pro, with stops at Sport, Comfort, and Comfort Plus along the way. The difference between the Sport and Comfort dichotomy in the car involves either an aggressive or laggard throttle response, along with changes in the rigidity of the suspension. Eco Pro throws in dialed-down air conditioning to reduce fuel usage.

Efficient Dynamics, which also includes the eight-speed automatic transmission, gives the 640i Gran Coupe an EPA fuel economy of 20 mpg city and 30 mpg highway, impressive numbers for a big German cruiser. In my combination of driving city streets, high-speed freeways, and taking fast curves on mountain roads, the car came in at the lower end of its fuel economy range, with 21.4 mpg.

The adaptive suspension did wonders for the performance, taking the car from comfortable highway luxury box to down-and-dirty street fighter. All of BMW's legendary handling is present in the 640i Gran Coupe despite its 16.5-foot length and over 3,800 pounds of mass. BMW seems to have shaved off some weight, though, as the doors felt very light when I opened them.

3a8082e126