Under the Hood
The 640i is powered by a 315-horsepower, turbocharged 3.0-liter six-cylinder engine. Its peak torque rating is 332 pounds-feet. BMW cites a zero to 60 mph time of 5.5 seconds for both the coupe and convertible. The standard eight-speed automatic transmission includes steering-wheel-mounted shift paddles.
Other standard features include computer-controlled adaptive shock absorbers and Driving Dynamics Control, which allows the driver to adjust the ride quality, accelerator response, power-steering assist level and automatic transmission behavior.
Optional mechanical upgrades include active stabilizer bars and active steering, the latter of which adds rear-wheel steering to the earlier generation's variable-ratio front steering system.
See also:
X3 in the Market
At $38,000, the X3 starts substantially higher than its nearest competitor,
the Acura RDX. Save for its problematic transmission behavior, the BMW offers a
more buttoned-down driving experience th ...
Signaling a turn
Press the lever beyond the resistance point.
To switch off manually, press the lever to the resistance
point.
Unusually rapid flashing of the indicator lamp indicates
that a turn signal bulb has ...
Locking the doors andwindows
Rear doors
Push the locking lever on the rear doors down.
The door can now be opened from the outside
only.
Safety switch for the rear
Press the button on the driver's
door if
children ar ...
