fuel consumption MERCEDES-BENZ SL ROADSTER 2019 Owner's Manual

It
is only possib leto shift thetransmission
from positio n005D tothe desire dpositio nif you
depres sthe brake pedal.Only thenisthe shift
lock relea sed.
i Upshifts
takeplaceathigher engine
speed safter acold start. Thishelps thecat-
aly tic converter toreach itsopera tingtem-
peratu remore quickly.
Information onthe automa ticrelea seofthe
electric parking brake(Ypage 148).
Hill start assist Hill
start assisthelps youwhen pulling away
forward orinreverse onanuphi llgradi ent.It
holds thevehicle forashort timeafter you
have removed yourfoot from thebrake pedal.
This gives youenough timetomove yourfoot
from thebrake pedalto the accelera torpeda l
and todepres sit before thevehicle beginsto
roll. G
WARNING
After ashort time,hillstart assistwil lno lon-
ger brake yourvehicle anditcould rollawa y.
There isarisk ofan accident andinjury.
Therefore, quickly move yourfoot from the
brake pedalto the accelera torpeda l.Never
lea vethe vehicle whenitis held byhill start
assis t.
Hill start assistisnot active if:
R you arepulling awayon alevel roadoron a
downhi llgradi ent
R the transmission isin positio n005C
R the electric parking brakeisappl ied
R ESP ®
is malfu nctioning ECO
start/stop function
Introductio n The
ECO start/stop functionswitches the
engine offautoma ticallyifthe vehicle isstop-
ped under certain conditions.
The engine startsautoma ticallywhenthe
driver wants topul lawa yaga in.The ECO
start/stop functiontherebyhelpsyouto
reduce thefuel consumption andemissi onsof
you rvehicle . Important
safetynotes G
WARNING
If the engine isswitched offautoma tically
and youexit thevehicle ,the engine is
restarted automatically.The vehicle may
begi nmoving. Thereisarisk ofaccident and
injury.
If you wish toexit thevehicle ,alw ays turn
off the ignition andsecure thevehicle
aga inst rollingawa y.
Gene ralnotes 0043
ECO start/stop display
The ECO start/stop functionisactivated
whenever youswitch onthe engine usingthe
SmartKey orthe Start/St opbutton.
If the engine hasbeen switched offautoma ti-
cally bythe ECO start/stop function,the00D6
ECO symbo lis shown inthe multifu nctiondis-
pla y.
Mercede s-AMGvehicles:theECO start/stop
function isonly availablein drive program C.
Automatic engineswi tch-off If
the vehicle isbraked toastandstill withthe
transmission in005B or005C, theECO start/stop
function switches offthe engine automa tically.
The ECO start/stop functionisopera tional
when:
R the indicator lampinthe ECO button islit
green
R the outsid etemperature iswithin therange
that issuita bleforthe system
R the engine isat normal operatingtempera-
ture
R the settemperature forthe vehicle interior
has been reached
R the battery issufficie ntlycharged Drivi
ng
129Drivi ngand parking Z

econ
omical driving. Ahigher levelindicat esa
more economical driving style.Ifthe three
outer areas arecomplet elyfilled atthe same
time, thedriver hasadopted themost eco-
nomic aldriving styleforthe select edsett ings
and prevailing conditions .The ECO display
border lightsup.
The ECO display doesnotindicat ethe actual
fuel consumption .The additionally achieved
range displayed underBonus fr.start Bonus
fr.start does
not indicat eafixed consumption reduction.
In addition todriving style,theactual con-
sumption isaffect edbyother factors, such as:
R load
R tire pressure
R cold start
R choice ofroute
R active electricalconsumers
These factorsare not included inthe ECO dis-
play.
An econ omical driving stylespecially requires
driving atmoderate enginespeeds.
Ach ieving ahigher valueinthe categor ies
"Acc eleration" and"Constan t":
R observe thegearshift recommendat ions.
R drive thevehicle indrive program Cor E.
In urban trafficand stop- start traffic,drive pro-
gram Cis recom mended.
On long journ eysatacon stant speed, e.g.on
the highway, onlytheouter areafor"const ant"
will change.
The ECO display summarizes thedriving style
from thestart ofthe journ eytoits complet ion.
Therefor e,there aremore marked changes in
the outer areas atthe start ofajourn ey.On
longer journeys,there arefewer changes .For
more marked changes ,perform amanual rest
(Y page 194).
Furt herinfor mation onthe ECO display
(Y page 193). Br
aking
Impor tantsafety notes G
WARN
ING
If you shift down onaslippery roadsurface
in an attem pttoincr ease theengine' sbrak-
ing effec t,the drive wheels couldlosetheir grip.
There isan incr eased danger ofskid-
ding andacciden ts.
Do not shift down foradditional enginebrak-
ing onaslippery roadsurface.
Downhill gradients !
On
long, steep gradient s,you must reduce
the load onthe brakes. Touse engine brak-
ing, shift toalower gearingood time. This
helps youtoavoid overheat ingthe brakes
and wearing themoutexces sively.
When making useofthe engine braking
effec t,itis possible thatadrive wheel may
not turn forsome time,e.g.inthe case of
suddenly changingor slippery roadsurface
con ditions .This could cause damage tothe
drive train.This type ofdamage isnot cov-
ered bythe Mercedes- Benzwarrant y.
Change intoalower gearingood timeonlong
and steep downhill gradients.This isespecially
import antifthe vehicle isladen.
This also applies ifyou have activat edcruise
con trol orAct ive Dist ance Assist DISTRONIC.
Heavy andlight loads G
WARN
ING
If you rest your footonthe brake pedal
while driving, thebraking systemcanover-
heat. Thisincreases thestoppin gdistanc e
and caneven cause thebraking systemto
fail. There isarisk ofan acciden t.
Never usethebrake pedalasafootr est.
Never depress thebrake pedalandthe
accelerat orpedal atthe same time.
! Depress
ingthe brake pedalconstant ly
results inexces siveandpremature wearto
the brake pads.
If the brakes havebeen subject edtoaheavy
load, donot stop thevehicle immediately, but
drive onfor ashort while. Thisallows theair-
flow tocool thebrakes morequickly.
Wet roads If
you have driven foralong time inheavy rain
without braking,there maybeadelayed reac-
tion from thebrakes whenbraking forthe first Driving
tips
151Driving andparking Z

!
To
ensure thelongevity andfullperform-
ance ofthe engine, onlypremium-grade
unleade dgasoli nemust beused.
If standard unleadedgasoli neisunavail able
and youhave torefuel withunleade dgaso-
line ofalower grade, observe thefollowi ng
precautions:
R Only fillthe fuel tank tohalf fullwith regu-
lar unleade dgasoli neand fillthe rest with
premium-grade unleadedgasoli neassoon
as possible .
R Do not drive atthe maximum speed.
R Avoid sudden acceleration andengine
speeds over3,000 rpm.
You willusua llyfind information aboutthe fuel
grade onthe fuel pump. Ifyou cannot findthe
label onthe fuel pump, askthegas station
staff.
i For
further information, consultaqual ified
speciali stworkshop orvisit
http:/ /www.mbusa .com(USA only).
As atemporary measure,ifthe recommended
fuel isnot avail able, youmay alsouseregula r
unleade dgasoli newith anoctane ratingof
87 AKI/91 RON.Thismay reduce engineper-
formance andincrease fuelconsumption.
Avoid driving atfull thrott leand sudden accel-
eration. Neverrefuelusinggasolinewith a
lower AKI.
i The
fuels youcan useinyour vehicle may
differ fromtheinformation inthe Operator's
Manual depending onthe country. Thefuels
that have been approved foryour vehicle
can befound onthe instruction labelonthe
inside ofthe fuel filler flap.
Information onrefueling (Ypage 145).
Additives ingasolin e
! Operating
theengine withfueladditives
added latercanlead toengine failure.Do
not mix fuel additives withfuel. Thisdoes
not include additives forthe removal and
prevention ofresidue buildup. gasoli nemust
only bemixed withadditives recommended
by Mercedes-Benz .Comply withtheinstruc-
tions foruse onthe product label.More
information aboutrecommended additives
can beobtained fromanyauthorized
Mercedes-Benz Center.
Mercedes-Benz recommendsthatyouuse
branded fuelsthathave additives. The
fuel qualityavail able insome countries
may notbesufficient. Residuecould buildup
in the fuel inject ionsystem asaresult. Insuch
cases, andinconsultation withanauthorized
Mercedes-Benz Center,thefuel may bemixed
with thecleaning additiverecommended by
Mercedes-Benz .You must observe thenotes
and mixing ratiosspecified onthe cont ainer. Engi
neoil
General notes !
Do
not use engine oiloran oilfilter with
specifications deviatingfromthose
expressly requiredforthe prescribed service
intervals. Donot change theengine oiloroil
filter inorder toset replacement intervals
longer thanthose prescribed. Thiscould
otherwise causedamage tothe engine or
exhaust gasaftertreatmen t.
Follow theinstruction son the service inter-
val displa yfor changing theengine oil.This
could otherwise causedamage tothe
engine orexhaust gasaftertreatmen t.
When handling engineoil,observe theimpor-
tant safety notesonservice products
(Y page 321).
The engine oilsarematched tothe perform-
ance ofMercedes-Benz enginesandservice
intervals. Youshould therefore onlyuseengine
oils and oilfilters thatareapproved forvehi-
cles with maintenance systems.
For alist ofapproved engineoilsand oilfilters,
consult anauthorized Mercedes-Benz Center.
Or visit thewebsite
http:/ <0012004500480059005200110050004800550046004800470048005600100045
00480051005D[ .com.
The table shows whichengine oilshave been
approved foryour vehicle. Service
productsand fillingcapacities
323Technicaldat a Z