MERCEDES-BENZ GT 4-DOOR COUPE 2021 AMG Owner's Manual

#
Toswitc hon theignit ion:press butt on1
twic e.
The indic ator lam psintheins trument cluster
light up.
The ignit ionisswitc hedoffag ain ifone ofthe
fo llo wing condition sis me t:
R Youdo notst ar tth eve hicle within
15 minut esand thetransmission isin posi‐
tion 005Dortheelectr icpar king brak eis
applied.
R Youpr ess button1 once . St
arting theve hicl e St
arting theve hicl ewith thest ar t/s topbut‐
to n &
DANG ER Risk ofdeat hcause dby
ex haus tga ses
Combus tionengines emitpoisonous exhaus t
ga ses suchas carbon monoxide.Inhaling
th ese exhaus tga ses ishazar dous tohealt h
and leads topoisonin g. #
Neverlea vetheengine or,if pr esent ,
th eauxiliar yheating running inan
encl osedspa cewithout sufficie ntventi‐
la tio n. &
WARNIN GRisk offire due toflammab le
mat erial intheengine compartmen tor
th eex haus tsy stem
Flammable materials mayignit e. #
Ther efor e, checkre gular lythat ther e
ar eno flammab lemat erials inthe
engine compartmen tor on theex haus t
sy stem. Re
quirement s:
R The Smar tKey isin theve hicle andisrecog‐
nized . #
Shif tth etra nsmiss iontoposition 005Dor005C. #
Depr essthebr ak epedal andpress butt on
1 onc e. #
Ifth eve hicle does notst ar t:switc hof fnon-
essential consumer sand press butt on1
once. #
Ifth eve hicle still does notst ar tand the
Place theKey inthe Marked SpaceSee
Operator's Manualdisplaymessag ealso
appear sin themultifunc tiondispla y:star t
th eve hicle withth eSmar tKey inthemar ked
space (emergency operati on mod e)
(/ page 140).
% Youcan switchoffth eengine whiledriving
by pressing button1 forabo utthre esec‐
onds orby pressing button1 thre etimes
wit hin thre esecon ds.Besureto obser vethe
saf etyno tesunder "Driving tips"
(/ page14 2).
Fu nction ofEmo tion Start Dr
iving andparking 13
9

#
Startth eve hicle withth est ar t/ stop butt on
(/ page13 9) and simu ltaneou sly pul lone of
th esteer ing wheel gearshif tpaddles 1or
2.
R The idlespee dis inc reased brief lywh en
st ar tin gth eengine.
R The exhaus tga sflaps areopen ed(spo rty
ch aract eristic )(/ page14 9).
St arting theve hicl ewith theSm artK ey inthe
ma rked spa ce(emer gency oper ation mode)
If th eve hicle does notst ar tand thePlace the
Key inthe Marked SpaceSeeOperator 'sManual
messag eappear sin themultifunc tiondispla y,
yo ucan star tth eve hicle inemer gency operati on
mod e. #
Makesur eth at mar kedspace 2isem pty. #
Remo veSmar tKey 1 from theke yring. #
Place Sma rtKe y1 inmar kedspace 2.
The vehicle willstar taf te ra shor ttime.
If yo ure mo veSmar tKey 1 from mar ked
space 2theengine continues running .Fo r
fur ther vehicle star ts howe ver,Smar tKey 1
mus tbe locat edinmar kedspace 2during
th eent ire jour ney. #
Have Smar tKey 1 checkedat aqu alif ied
spec ialistwo rkshop. If
th eve hicl edoes notst ar t: #
Place SmartKey 1 inmar kedspace 2and
lea veitth er e. #
Depr essthebr ak epedal andstar tth eve hi‐
cle using thest ar t/ stop butt on.
% Youcan also switchon thepo we rsupp lyor
th eignition withth est ar t/ stop butt on. St
arting theve hicl evia Remo teOnline serv‐
ices Cooling
orheating theve hicl eint erior before
co mmenci ngyour jour ney
Ensur eth efo llo wing beforest ar tin gth eengine:
R The legalstipulation sin thear ea wher eyo ur
ve hicle ispar kedallo wengin est ar tin gvia
smar tphon e.
R Itis saf eto star tand runth eengine where
yo ur vehicle ispar ked.
R The fuel tank issu fficien tly full.
R The star terbatt eryis suf ficie ntly charge d. 14
0
Driving and parking

Cha
rging thest ar terbatt erybe fore star ting
th ejou rney
If th eve hicle batteryis disc harged, youcan
re cei veames sageon your smar tphon e.Youcan
th en star tth eve hicle withth esmar tphon eto
ch arge thebatt ery. The vehicle isaut omatically
switc hedoffaf te rte nminu tes.
Ensur eth efo llo wing beforest ar tin gth eengine:
R The legalstipulation sin thear ea wher eyo ur
ve hicle ispar kedallo wengin est ar tin gvia
smar tphon e.
R Itis saf eto star tand runth eengine where
yo ur vehicle ispar ked.
R The fuel tank issu fficien tly full.
St arting theve hicl e(R emo teOnline) &
WARNIN GRisk ofcrus hing orentr ap‐
ment dueto unin tentio nalstar tin gof the
engine
Limbs couldbecrushed ortrapped ifth e
engine isstar tedunint entionall ydur ing
ser vice ormaint enanc ewo rk. #
Alw ayssecur eth eengine agains tunin‐
te ntio nalstar tin gbef orecar rying out
maint enanceorrepair work. Re
quirement s:
R Park position 005Disselect ed.
R The anti- theftalar msystem isno tactiv ated.
R The panic alarmisno tactiv ated.
R The hazar dwa rning light system isswitc hed
of f.
R The hood isclosed.
R The door sar eclosed andlocked.
R The windo wsand slidin gsun roof areclosed. #
Startth eve hicle using thesmar tphon e.
Af tereve ryengine star t,th eengine runs for
te nminu tes.
Yo ucan carryout amaximum oftwoconsec u‐
tiv est ar tin gatt em pts. Yo umus tst ar tth eve hicle
once withth eSmar tKey bef oretrying tostar t
th eengine again withth esmar tphon e.youcan
st op theve hicle again atanytime. %
Further information canbefound inthe
smar tphone app.
Secur ingtheengine agains tst ar ting before
car rying out maintenance orrepair work: #
Swi tchon thehazar dwa rning light system.
or #
Unloc kth edoor s.
or #
Open aside windo wor thesliding sunroof. Br
eaking-in notes To
preser vetheengine during thefirs t
1, 000 miles(1 ,500 km):
R Drive at varying road spee dsand engine
spee ds.
R Donotdr ive at spee dsgreat erthan 85 mph
(1 40 km/ h).
R Allo wtheengine toreac hamax imum engine
spee dof 4,5 00 rpm (4,500 rpm) onlybr ief ly.
R Drive th eve hicle indrive pr ogr am A. Dr
iving andparking 14
1

R
Chan gegear bef oreth eta ch ome terneedl eis
00C3 ofthewa yto there dar ea oftheta ch ome‐
te r.
R Donotshi ftdo wn age ar man uallyin order to
br ak e.
R Avoid overstrai ning theve hicle, e.g.driving at
full thro ttle .
R Donotde press theaccelera torpeda lpas t
th epr essur epoint (kickdo wn).
R Onlyincr ease theengine speedgradually and
accelera tetheve hicle tofull spee daf te r
1, 000 miles(1 ,500 km).
This also app lieswhe nth eengine orpar tsof the
dr ivet ra in have been replaced.
Please alsoobser vethefo llo wing breakin g-in
no tes:
R Incer tain drivin gand drivin gsaf etysy stems,
th esensor sadjus taut omaticall ywhile acer‐
ta in dis tance isbe ing driven afte rth eve hicle
has been delivered orafte rre pair s.Fu llsy s‐
te m effectiv enes sis no tre ac hed untilth e
end ofthis teac h-in proce ss. R
Brak epads ,br ak edisc sand tires that are
eit her newor have been replaced onlyac h‐
ie ve optimum braking effect and grip afte r
se veralhundr edmiles ofdrivin g.Com pen‐
sat efo rth ere duced braking effect by appl y‐
ing great erforc eto thebr ak epedal. No
teson driving &
WARNIN GRisk ofacci dent dueto
object sin thedr iver's foot we ll
Obj ectsin thedr iver's foot we llma yim pede
pedal travelor bloc kadepr essed pedal.
This jeopardizes theoper ating androad
saf etyof theve hicle. #
Stow allobj ect sin theve hicle secur ely
so that they canno tget intoth edr iver's
fo ot we ll. #
Alw aysins tallth efloor mats securely
and asprescr ibed inorder toensur e
th at ther eis alw ayssuf ficie ntroom for
th epedals. #
Donotuse loose floor mats anddonot
place floor mats ontopof one another. &
WARNIN GRisk ofacci dent dueto inc or‐
re ct foot we ar
In cor rect foot we arinc ludes, forex am ple:
R Shoes withplat form soles
R Shoes withhigh heels
R Slipper s #
Alw ayswe arsuit able foot we arso that
yo ucan operat eth epedals safely. &
WARNIN GRisk ofacci dent ifth eignition
is switc hedoffwhile driving
If yo uswit choffth eignition whiledriving,
saf etyfun ction sar ere strict ed orno long er
av ailable.
Yo uwill need touse considerably morefo rc e
to steer and brak e, forex am ple. #
Donotswit choffth eignition whiledriv‐
ing. 14
2
Driving and parking

&
DANG ER Risk ofdeat hcause dby
ex haus tga ses
Combus tionengines emitpoisonous exhaus t
ga ses suchas carbon monoxide.Inhaling
th ese exhaus tga ses ishazar dous tohealt h
and leads topoisonin g. #
Neverlea vetheengine or,if pr esent ,
th eauxiliar yheating running inan
encl osedspa cewithout sufficie ntventi‐
la tio n. &
WARNIN GRisk ofskid ding and ofan
acci dent dueto shif ting down onslipper y
ro ad sur faces
If yo ushif tdo wn onslipp eryro ad sur faces to
inc rease theengine braking effect, thedr ive
wheels maylose traction . #
Donotshif tdo wn onslipper yro ad sur‐
fa ces toinc rease theengine braking
ef fect. &
DANG ER Risk offata linj urydue topoi‐
sonous exhaus tga ses
If th eta ilpipe isbloc kedor suf ficie ntventil a‐
tio nis no tpo ssi ble, po isonou sex haus tga ses
suc has carbon monoxidemayent ertheve hi‐
cle. This isthecase when theve hicle
becomes stuc kin snow ,fo rex am ple. #
Keep theta ilpipe andthear ea around
th eve hicle free from snowwhen the
engine orthest atio naryheat erareru n‐
ning . #
Ope nawi ndo won theside oftheve hi‐
cle facing away from thewind toensur e
an adeq uatesupply offresh air. &
WARNIN GRisk ofacci dent andinjury
due tobeing under theinf luence ofalco‐
hol and drugs while driving
Dr inkin gand driving and/or taking drug sand
dr ivi ng areve ry dang erous combin ations.
Ev en asmall amount ofalcohol ordrugs can
af fect your reflex es, percep tion sand judg‐
ment . The
possibility ofaser ious oreve nfa ta lacc i‐
dent aregr eatl yinc reased when youdr ink or
ta ke drugs and drive. #
Donotdr ink ortake drugs and drive or
allo wan yone todrive who hasbeen
dr ink ing ortaking drug s. &
WARNIN GRisk ofacci dent dueto the
br ak esy stem overheating
If yo ulea veyour foot on thebr ak epedal
when driving, thebr ak esy stem mayov er‐
heat.
This increases thebr aking distance and the
br ak esy stem mayeve nfa il. #
Neveruse thebr ak epedal asafo ot re st. #
Donotde press thebr ak epedal andthe
acc elerat orpedal atthesame time
while driving. Dr
iving andparking 14
3

&
WARNIN GRisk ofacci dent dueto inc or‐
re ct gearshif ting
If th eengine speedishigher than theidle
speed andyouen gage thetransmission posi‐
tion 005Bor005E, theve hicle mayacceler ate
shar ply. #
Ifyo uen gage thetransmission position
005B or005E when theve hicle isat a
st ands till,alw aysdepr essthebr ak e
pedal firm lyand donotacc eler ateat
th esame time. *
NO
TEEngi nedama gedue toexcess ively
hig hengi nespe eds The
enginewillbe damag edifyo udr ive wit h
th eengine intheov errevving rang e. #
Donotdr ive wi th theengine intheove r‐
re vving rang e. *
NO
TEWearing out thebr ak elinings by
continu ously dep ressing thebr ak epedal #
Donotdepr essthebr ak epedal contin‐
uousl ywhils tdr iving. #
Touse thebr aking effect of theengine,
shif tto alowe rge ar ingood time. *
NO
TEDama getothedr ivet ra in and
engin ewhen pulling away #
Donotwa rm uptheengine whilethe
ve hicle isstatio nary.Pull away immed i‐
at ely. #
Avoid high engine speeds anddriving at
full thro ttle untilth eengine hasreac hed
its operatin gte mp eratur e. *
NO
TEDama getothecat alytic converter
due tonon-co mbusted fuel The
engine isno tru nning smoothly and is
misf iring.
Non-c ombus tedfuel mayge tint oth ecat a‐
lyt iccon verter . #
Onlydepr esstheaccelera torpeda l
slig htly. #
Have thecause rectif ied imme diat ely at
a qu alif ied spec ialistwo rkshop. No
teson driving onsalt- treat edroads
The braking effect islimit edon salt-tr eated
ro ads.
Ther efor e, obse rveth efo llo wing notes:
R Due tosalt build-up onthebr ak edisk sand
br ak epads, thebr aking distance canincrease
consi derablyor result inbraking onlyon one
side
R Maint ainamuc hgr eat ersaf edis tance tothe
ve hicle infront
To remo vesalt build-up:
R Brak eoccasionall ywhile paying attention to
th etra ffic con dition s
R Carefull ydepr essthebr ak epedal attheend
of thejour neyand when star tin gth ene xt
jour ney 14
4
Driving and parking

No
teson hydropl aning
Hyd roplaning cantake place onceacer tain
amount ofwa terhas accumu lated on thero ad
sur face.
Obs erve thefo llo wing notesdur ing heavyprecip‐
it ation orinconditions inwhic hhy droplaning
ma yocc ur:
R Reduce speed
R Avoid tireru ts
R Avoid sudden steer ing movements
R Brak ecar eful ly
% Also obser vetheno teson regular lych ecking
wheels andtires (/ page306).
No teson driving through wateron the road
sur face
Wa terwhi chhas entered intoth eve hicle can
damag eth eengine, electricsand transmission .
Wa tercan alsoent ertheair intakeof theengine
and cause engine damage. Obser
vethefo llo wing ifyo umus tdr ive th ro ugh
wa ter:
R The water,when calm,ma yonl yre ac hth e
lo we redg eof theve hicle body.
R Drive at wa lkin gpace atmos t,other wise
wa tercan entertheve hicle interior orengine
com partment .
R Vehicles trave ling infront ,or onc omin gve hi‐
cles, cancreat ewa veswhic hma yex ceed the
maximu mper missi bledep thofthewa ter.
The braking effect of thebr ak es isreduced afte r
fo rd ing. Brak ecar efull ywhile paying attent ion to
th etraf fic condi tions untilbr aki ng powe rhas
been fullyrestor ed. Fu
nction ofrear axle steer ing The
rear axle steer ing isan electr omechanical
auxiliar yst eer ing onthere ar axle whichadjus ts
th esteer ing ofthere ar wheels accordin gto the
position ofthefront wheels, depending onthe
speed. Thisresults ingreat ermaneuv erabil ity
and improve dstabilit y. Re
ar axle steer ing has thefo llo wing charact eris‐
tic s:
R Reduced steer ing effort and turnin gra dius
re sulting inreduced parkingef fort
R Improve ddr iving stabilit y,e.g. when corner‐
ing
R Mor edir ect steer ing resulting inim prov ed
handling oftheve hicle
Obser vetheno teson sno wch ains
(/ page30 7) and onactivatin gsn ow chain
mode . Inf
orma tion ontheAMG ceramichigh -per‐
fo rm ance comp osit ebr ak esy stem The
brak esy stem isdesigned forhea vyloa ds.
This maylea dto noi sewhen braki ng. Thisef fect
can also occu raf te rwa shing theve hicle.
The noise depends onthefo llo wing fact or s:
R Spee d
R Brak efo rc e
R Environme ntal cond itions, e.g.te mp eratur e
and airhumidity Dr
iving andparking 14
5

%
Have thebr ak esy stem checkedat aqu ali‐
fi ed specialis two rkshop afte rit has been
subject edtoextreme load s. EC
Ostar t/s topfunc tion Ope
ratio nof the ECOstar t/s topfunc tion
% The ECOstar t/ stop funct ionisno tav ailable
in all drive pr og rams, depe nding onthe
engine. Observethest atus displa yin the
multifu nctiondisplay fo rth is.
The engin eis switc hedoffaut omat icallyin the
fo llo wing situat ionsifall vehicle conditions for
an aut omat iceng inestop areme t:
R Youbr ak eth eve hicle toast ands tillin trans ‐
miss ionposit ion005Bor005C.
R Vehicl eswith a48 Von-b oard electrical
sy stem: youdepr essthebr ak epedal when
tra veling atalow speed.
If th esy stem has detected one ofthefo llo wing
situat ions,th eengine willnotst op:
R Youstop atast op sign andther eis no vehi‐
cle infront ofyou. R
The vehicle that stopped infront ofyou
st ar ts up again.
R Youman euver,tur nth esteer ing wheel
shar plyor eng agere ve rsege ar.
% Ifth esy stem detects anintellige nt stop
inhibit or,e.g. ast op sign, theengine willnot
st op.
If yo uact ivat eth eHOLD function oreng age
th epar kposition 005D,theengine canbe
switc hedoffin spit eof an intellig entstop
inhibit or.
The engine isrestar tedaut omatic allyif:
R Youen gage trans missi on positio n005B or005E.
R Youdepr esstheacceler ator pedal.
R Anautomatic enginestar tis requ ired bythe
ve hicle.
R Youre lease thebr ak epedal.
R Vehicl eswith a48 Von-b oardele ctrical
sy stem:
- Youre lease thebr ak epedal onado wnhill
gr adient andtheve hicle does notro ll. -
The vehicle rolls on ado wnhill gradien t
and does notaut omat icallyent erglide
mode at15 mp h(2 0km/h).
EC Ostar t/ stop funct ionsymbols inthemulti‐
func tion displa y:
R The 00D6 symbol (green) appear swhen the
ve hicle isat ast ands till:th eengine was
switc hedoffby theEC Ostar t/ stop funct ion.
R The 00D5 symbol (yello w)appear swhen the
ve hicle isat ast ands till:no tall vehicle condi‐
tions foran engine stop have been met.
R Neit herthe00D6 nor00D5 symbol appears
when theve hicle isat ast ands till:an intelli‐
ge nt stop inhibit orwa sde tected, e.g. ast op
sign.
R The s symbol appears:theEC Ostar t/
st op funct ionisdeactiv ated orther eis amal‐
func tion.
If th eengine wasswitc hedoffby theEC Ostar t/
st op funct ionand youlea vetheve hicle, awa rn‐
ing tone sou nds and theengine isno tre star ted.
In addition, thefo llo wing displa ymess age
appear sin themultifunc tiondispla y: 14
6
Driving and parking

Vehicle
ReadytoDrive Switch theIgnition Off
Before Exiting
If yo udo notswit choffth eignition ,it is aut o‐
maticall yswitc hedoffaf te rth re eminut es.
Deactiv atingoractiv ating theECO star t/
sto pfunc tion #
Press displ aybutt on1.
The displa ybutt onindicat escur rent status
2 oftheEC Ostar t/ stop funct ion:
R s (red): deactiv ated
R 00D6 (green): activated
R 00D5 (yello w): inactiv e ECO
displa yfunction The
ECOdispla ysummar izesyour drivin gch ar‐
act eristic sfrom thest ar tof thejour neyto its
com pletion andassis tsyouin achie vingth e
mos teconomical driving style.
Yo ucan influen ceconsum ption ifyo u:
R Drive wit hpar ticular care.
R Drive th eve hicle indrive pr ogr am A.
R Followthege arshif tre comme ndations . The
inner segment lights upand theout erseg‐
ment fills up:
R 1 moderat eacc eler ation
R 2 gentle decel erati on and rolling
R 3 con sistent spe ed
The inne rseg ment does notlight upand the
out ersegment empties:
R 1 spor tyacc eler ation
R 2 hea vybrakin g
R 3 fluct uatio nsinspee d Dr
ivin gand parking 14
7

Yo
uha ve driven econ omicall yif:
R The thre eout ersegment sar ecom pletely fil‐
led simultaneousl y.
R The ECOdispla ylights up.
The additional rang eac hieve das are sult ofyour
dr ivin gst yle in com parison withadr iver wit ha
ve ry spor tydriving style is sho wnunder Bonus
fr. Start .The rang edispl ayed does notindicat ea
fi xe dre duction incon sum ption. ECO
Assis tfunct ion %
This function iscoun try- dependen tand is
av ailable onlyforve hicles witha48 Von-
boar delectr icalsystem.
EC OAssis tanalyz esdat afo rth eve hicle's expec‐
te dro ute. This allowsthesy stem tooptimally
adjus tth edr iving style fo rth ero uteahead, save
fuel andrecup erate.
EC OAssi stisavailable inthefo llo wing drive pr o‐
gr ams:
R o (Slipp ery)
R A Comfort) R
= (Individ ual):onlywit hth edr ive se tting
"R educed" or"Moder ate" (/ page15 1)
If th esy stem detects anevent ahead, e.g.a
speed limitoraro und about ,it will appear onthe
multifu nctiondisplay. Av
ailable routere sults 1
Event ahead
2 Distance displ ayforth eev ent ahead
3 "Foo tof fth eacceler ator" prom pt
The segment sof dis tance displ ay2 showthe
dis tance totheeve ntaheadas follo ws :
R Afew segm entslight up:theeve ntaheadis
nea r.
R Man ysegments lightup:theeve ntaheadis
fur ther aw ay.
When theve hicle nearsan event ,EC OAssis twill
calculat eth eop timal speed formaximu mfuel
econom yand recup erati ve ener gybased onthe
dis tance, speedand grad ient. "Foo tof fth e 14
8
Driving and parking