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:
Parked car ventilation
The conceptThe parked car ventilation provides ventilation to the passenger compartment
and lowers its temperature, if necessary.
The parked car ventilation system is operated via iDrive. Two diffe ...
Self-leveling suspension
The concept
The self-leveling suspension on the rear axle
assures a continuous ground clearance.
To do so, the height of the vehicle is measured
by sensors at both rear wheels.
If the actual he ...
Mounting LATCH child restraint fixing
systems on power rear seats
1. Before mounting, adjust the seats to their
basic position.
2. For better accessibility, tilt the backrest
back slightly.
3. Mount the child restraint fixing system; refer
to the operating i ...