BMW Z4 Roadster Owner's Handbook Manual page 257

Make use of overrun mode
When approaching a red traffic light, take your
foot off the accelerator and allow the vehicle to
roll.
On downward stretches, take your foot off the
accelerator and allow the vehicle to roll.
The fuel supply is interrupted in overrun mode.
Switch off the engine if stopping
for longer periods
Stopping the engine
When you stop the vehicle for longer periods, for
example at traffic lights, railway crossings or in
traffic jams, switch off the engine.
Auto Start Stop function
The Auto Start Stop function of the vehicle shuts
off the engine automatically during a stop.
If the engine is switched off and then started
again, the fuel consumption and emissions are
reduced compared with a permanently running
engine. Savings can be made just by stopping
the engine for a few seconds.
Fuel consumption also depends on other factors,
such as driving style, road condition, mainte‐
nance or environmental factors, for example.
Switch off functions which are
not currently required
Functions such as seat heating or rear window
heating require a great deal of energy and in‐
crease fuel consumption, especially in city traffic
and stop-and-go traffic.
Switch these functions off if they are not re‐
quired.
The ECO PRO drive mode supports energy-sav‐
ing use of comfort functions. These functions are
automatically deactivated wholly or partially.
Online Edition for Part no. xxx - X/18
Saving fuel
Have maintenance work carried
out
Have the vehicle serviced regularly to achieve
optimal economy and lifetime. BMW recom‐
mends having maintenance work carried out by a
BMW Service Partner.
Please also see the BMW Maintenance System,
see page 301.
ECO PRO
Principle
ECO PRO supports an efficient driving style. To
do this, the engine management and comfort
functions, such as for example the air condition‐
ing power, are adjusted.
The engine is disconnected from the gearbox in
selector lever position D under certain circum‐
stances. The vehicle rolls when idling to optimise
consumption. Selector lever position D remains
engaged.
In addition, situation-dependent notes, ECO
PRO tips, can be displayed which help you to
drive with optimum consumption.
In the instrument cluster, the extension of the
range achieved as a result can be displayed as a
bonus range.
General
The system comprises the following
EfficientDynamics functions and
EfficientDynamics displays:
▷ ECO PRO bonus range, see page 259.
▷ ECO PRO air conditioning, see page 258.
▷ Route-ahead assistant, see page 260.
▷ Coasting driving state, see page 261.
▷ Driving style analysis, see page 262.
DRIVING HINTS
257