BMW 550I GRAN TURISMO BROCHURE 201 Service Manual Page 19

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Both the BMW TwinPower Turbo
inline six-cylinder and V- engine
(shown) are harnessed to an
-speed
STEPTRONIC automatic
transmission, for astonishingly
smooth and rapid acceleration.
BMW EfficientDynamics
Less emissions. More driving pleasure.
At BMW, just as there’s no such thing as striving for second place, there’s also no room for
less-than-inspiring power. Take, for example, the powerplant under the hood of the  i and
i xDrive Gran Turismo. Designed for reliably smooth and quick acceleration, this TwinPower
Turbo V- serves up  hp of pure exhilaration, with a wide powerband and truly inspiring top
speed. The  lb-ft of maximum torque is available over an extremely broad range – from 
to  rpm. With a standstill to  time of  . seconds,
it’s just the kind of track-inspired
muscle that built BMW’s formidable reputation.
No less impressive is the  -hp inline six-cylinder TwinPower Turbo engine in the  i and
i xDrive Gran Turismo. With  lb-ft of torque that kicks in at just  rpm, hit the throttle
and in just  . seconds you’re sailing past  mph.
Yet, like the V- engine in the  i and
i xDrive Gran Turismo, it’s also one of the most fuel-ef cient turbocharged powerplants
available.
What makes these engines so revolutionary is BMW’s Ef cientDynamics mandate. For all its
daunting power, BMW’s TwinPower Turbo V- is incredibly fuel efcient, owing to its unique
turbocharger construction and placement. Another contributing factor: the High Precision
direct injection regulates fuel usage so precisely that it actually lowers the vehicle’s emissions
by up to fi percent, meeting U.S. Ultra Low Emission Vehicle (ULEV) limits.
Both engines are paired with a groundbreaking  -speed
STEPTRONIC automatic transmission.
Smooth-shifting and sporty, this transmission features taller cruising gears and a unique gear
arrangement for an unusually high ef ciency of 񂢘 percent in all eight gears. A faster shift time
also improves fuel ef ciency – that’s BMW’s Ef cientDynamics in action.
HIGH PERFORMANCE IS THE PRODUCT OF HIGHER STANDARDS.
|  Engines
The TwinPower Turbo V-񂌘 engine in the  i and  i xDrive
Gran Turismo develops breathtaking torque early on, and a
power curve that grows all the way to  rpm. Along with
smooth and quiet running in any rev range, it delivers total
comfort and control.
 fi     
Engine speed (rpm)
Torque (lb-ft)
Output (horsepower)
Torque (lb-ft)
Output (horsepower)


fi



fifi





fi
fi
fi


fi
Get the latest information on BMW standard and optional features, packages and technical specifi cations.
Visit bmwusa.com, select the BMW model of your choice, and click on “Features & Specs.
BMW AG test results,  i xDrive Gran Turismo;  . seconds,  i Gran Turismo. BMW urges you to obey all posted speed
laws and always wear safety belts.
BMW AG test results,  i xDrive Gran Turismo;  . seconds,  i Gran Turismo. BMW urges you to obey all posted speed
laws and always wear safety belts.
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