External devices
At a glance

See also:
General information
Refuel promptly
Refuel no later than at a range of 30 miles/50 km, or operation of the engine is
not ensured and damage may occur.◄ ...
Diagnosis OBD
On the driver's side is an OBD socket for checking components relevant to the
composition of the vehicle's emissions. ...
Aerodynamic optimisation of underside panelling
As the excellent drag coefficient (cd = 0.26) would suggest, the aerodynamics
of the new BMW 3-Series have been intensively honed in a state-of-the-art wind
tunnel. The optimised aerodynamics also ...
