fuel consumption MERCEDES-BENZ AMG GT ROADSTER 2018 Owner's Manual

Emergency brakingsee BAS (Brake Assist System)
Emergency release
Driver's door .................................... 73
Trunk .............................................. .76
Vehicle .............................................7 3
Emergency Tensioning Devices
Activation ........................................ .52
Emissions control
Service and warranty information .... 25
Engine
Check Engine warning lamp .......... .203
Display message ............................ 186
ECO start/stop function ................ 113
Engine number ............................... 286
Irregular running ............................ 115
Jump-starting ................................. 254
Starting problems .......................... 115
Starting the engine with the
SmartKey ....................................... 112
Starting with the Start/Stop but-
ton ................................................. 112
Switching off .................................. 128
Tow-starting (vehicle) ..................... 259
Engine electronics
Notes ............................................. 285
Problem (malfunction) ................... 115
Engine oil
Adding ...........................................2 37
Additives ........................................ 289
Checking the oil level ..................... 235
Checking the oil level using the
dipstick .......................................... 235
Checking the oil level using the
on-board computer ........................ 236
Display message ............................ 187
Filling capacity ............................... 289
Notes about oil grades ................... 289
Notes on oil level/consumption .... 235
Temperature (on-board com-
puter) ............................................. 170
Engine oil additives
see Additives (engine oil)
Ente ring an addre

ss
see also Digital Operator's Man-
ual ..................................................2 08
ESC (Electronic Stability Control)
see ESP
®(Electronic Stability Program) ESP
®(Electronic Stability Pro-
gram)
AMG menu (on-board computer) ... 171
Characteristics ................................. 62
Deactivating/activating ................... 62
Deactivating/activating (button
in AMG vehicles) .............................. 63
Display message ............................ 175
Function/notes ................................ 62
General notes .................................. 62
Important safety information ........... 62
Warning lamp ................................. 200
ETS (Electronic Traction System) ....... 62
Exhaust check ................................... 131
Exhaust pipe (cleaning instruc-
tions) ..................................................2 45
Exterior lighting
Cleaning ......................................... 244
see Lights
Exterior mirror
Calling up a stored setting (mem-
ory function) ....................................9 5
Exterior mirrors
Adjusting ........................................ .92
Dipping (automatic) .........................9 3
Folding in/out (automatically) ......... 92
Folding in/out (electrically) ............. 92
Out of position (troubleshooting) ..... 93
Setting ............................................. 92
Storing settings (memory func-
tion) ................................................. 94
Storing the parking position ............. 93
F
Favorites
Overview ........................................ 211
Features ............................................. 219
Filler cap
see Refueling
Flat tire
Changing a wheel/mounting the
spare wheel ................................... 279
Preparing the vehicle ..................... 249
TIREFIT kit ...................................... 250
Floormats ........................................... 232
Frequencies
Mobile phone ................................. 285
10Index

Two-way radio ................................ 285
Front-passenger seat
see Seat
Fuel
Additives ........................................2 88
Consumption statistics .................. 162
Displaying the current consump-
tion ................................................ 162
Displaying the range ......................1 62
Driving tips ....................................1 31
E10 ................................................ 287
Fuel gauge ....................................... 34
Grade (gasoline) ............................ 287
Important safety notes .................. 287
Problem (malfunction) ................... 127
Refueling ........................................ 125
Tank content/reserve fuel ............. 287
Fuel filler flap
Closing ...........................................1 26
General information ....................... 126
Opening ......................................... 126
Problem (malfunction) ................... 127
Fuel level
Calling up the range (on-board
computer) ...................................... 162
Fuel tank
Capacity ........................................ 287
Problem (malfunction) ................... 127
Fuses
Allocation chart .............................2 60
Before changing .............................2 60
Fuse box in the front-passenger
footwell .......................................... 260
Fuse box in the rear compartment .. 260
Important safety notes .................. 259
G
G-Meter (on-board computer) .......... 171
Garage door opener
Clearing the memory ..................... 232
General notes ................................ 230
Important safety notes .................. 230
Opening/closing the garage door .. 232
Problems when programming ........2 32
Programming (button in the rear-
view mirror) ................................... 230
Synchronizing the rolling code ....... 231 Gasoline
............................................. 287
Gear indicator (on-board com-
puter) ..................................................1 70
Genuine parts ...................................... 24
Glove box ...........................................2 18
Googleâ„¢ Local Search
see also Digital Operator's Man-
ual ..................................................2 08
H
Handling control system
see ESP®(Electronic Stability Program)
Handwriting recognition
Switching text reader function
on/off ............................................ 211
Touchpad ....................................... 210
Hazard warning lamps ........................ 98
Head bags
Operation ......................................... 47
Head level heating (AIRSCARF) .......... 89
Head restraints
Adjusting ......................................... 86
Headlamps
Cleaning system (notes) ................ 290
Fogging up ....................................... 99
see Automatic headlamp mode
Heating
see Climate control
High beam flasher ............................... 97
High-beam headlamps
Display message ............................ 185
Switching on/off .............................. 97
Hill start assist .................................. 112
HOLD function
Activating ....................................... 144
Activation conditions ..................... 144
Deactivating ................................... 145
Display message ............................ 189
General notes ................................ 144
Home address
see also Digital Operator's Man-
ual ..................................................2 08
Hood
Closing ...........................................2 35
Display message ............................ 195
Important safety notes .................. 234
Opening ......................................... 234
Index11

Protecting the environment
General notes
HEnvironmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
The objectives are for the natural resources
that form the basis of our existence on this
planet to be used sparingly and in a manner
that takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tire wear are affected by these factors:
Roperating conditions of your vehicle
Ryour personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
Ravoid short trips as these increase fuel con-
sumption.
Ralways make sure that the tire pressures
are correct.
Rdo not carry any unnecessary weight.
Rremove roof racks once you no longer need
them.
Ra regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
Ralways have service work carried out at a
qualified specialist workshop.
Personal driving style:
Rdo not depress the accelerator pedal when
starting the engine.
Rdo not warm up the engine when the vehicle
is stationary.
Rdrive carefully and maintain a safe distance
from the vehicle in front.
Ravoid frequent, sudden acceleration and
braking.
Rchange gear in good time and use each gear
only up to Ôof its maximum engine speed.
Rswitch off the engine in stationary traffic.
Rkeep an eye on the vehicle's fuel consump-
tion.
Environmental concerns and recom-
mendations
Wherever the Operator's Manual requires you to
dispose of materials, first try to regenerate or re-
use them. Observe the relevant environmental
rules and regulations when disposing of materi-
als. In this way you will help to protect the envi-
ronment.
Genuine Mercedes-Benz parts
HEnvironmental note
Daimler AG also supplies reconditioned major
assemblies and parts which are of the same
quality as new parts. They are covered by the
same Limited Warranty entitlements as new
parts.
!Air bags and Emergency Tensioning Devi-
ces, as well as control units and sensors for
these restraint systems, may be installed in
the following areas of your vehicle:
Rdoors
Rdoor pillars
Rdoor sills
Rseats
Rcockpit
Rinstrument cluster
Rcenter console
Do not install accessories such as audio sys-
tems in these areas. Do not carry out repairs or welding. You could impair the operating
efficiency of the restraint systems.
Have aftermarket accessories installed at a
qualified specialist workshop.
You could jeopardize the operating safety of
your vehicle if you use parts, tires and wheels as
well as accessories relevant to safety which
have not been approved by Mercedes-Benz. This
could lead to malfunctions in safety-relevant
24Genuine Mercedes-Benz parts
Introduction

GWARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if:
Ryou are pulling away on a level road or on a
downhill gradient
Rthe transmission is in position i
Rthe electric parking brake is applied
RESP®is malfunctioning
Rear axle steering
General notes
Depending on the speed, rear axle steering
adapts the track of the rear axle to the position
of the front wheels. Together with the steering
angle of the front wheels, this results in greater
mobility and stability than on vehicles without
rear axle steering.
Rear axle steering has the following character-
istics:
Rreduced steering effort and turning circle,
resulting in reduced parking effort.
Rimproved driving stability, e.g. on curves.
Rthe vehicle has more direct steering. Control
of the vehicle is thereby increased.
ECO start/stop function
Introduction
The ECO start/stop function switches the
engine off automatically if the vehicle is stopped
under certain conditions.
The engine starts automatically when the driver
wants to pull away again. The ECO start/stop
function thereby helps you to reduce the fuel
consumption and emissions of your vehicle.
Important safety notes
GWARNING
If the engine is switched off automatically and
you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving.
There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes
:ECO start/stop display
If the engine has been switched off automati-
cally by the ECO start/stop function, the è
ECO symbol is shown in the multifunction dis-
play.
The ECO start/stop function is only available in drive program C.
The ECO start/stop function is activated when-
ever you switch on the engine using the Smart-
Key or the Start/Stop button. This is the case if:
Rthe ignition was switched off for more than
four hours or
Rthe ECO start/stop function had been activa-
ted before the engine was switched off
Automatic engine switch-off
The ECO start/stop function switches the
engine off automatically if:
Rthe ECO start/stop function is activated
(Ypage 114) and
Ryou brake the vehicle to a standstill in trans-
mission position h
The ECO start/stop function is operational
when:
Rthe indicator lamp in the ECO button is lit
green
Rthe outside temperature and the atmospheric
air pressure is within the range that is suitable
for the system
Driving113
Driving and parking
Z

Automa tic drive program
Drive program C (Comfort)
Drive program Cis characterized by th efollow-
ing :
Rthevehicl edelivers comfortable, economical
handlin gcharacteristics .
Rthevehicl epulls away mor egentl yin forward
and revers egears, unless th eaccelerato r
pedal is depressed fully.
Rth evehicl ehas improved drivin gstability, for
exampl eon slipper yroad surfaces.
Roptimal fuel consumption resulting from th e
automatic transmission shifting up sooner.
The vehicl eis driven in th elow engin espee d
range and th ewheels are less likely to spin .
Rgliding modeis available.
Rth eECO start/sto pfunction is available.
Drive program S (Sport )
Drive programSis characterized by th efollow-
ing :
Rthevehicl eexhibits sport ydrivin gcharacter-
istics .
Rtheautomatic transmission shifts up later.
The fuel consumption possibl ybein ghigher
as aresult of th elater automatic transmission
shif tpoints .
Rthesuspension exhibits stiff springing and
damping settings.
Rgliding mod eis no tavailable.
Rth eECO start/sto pfunction is no tavailable.
Rif aperiod of dynamic drivin gis followed by an
extended phas ewit h a constan taccelerato r
pedal position ,th evehicl eshifts up to a
higher gear .This optimizes fuel consumption .
Drive program S+ (SportPlus)
Drive programS+is characterized by th efol -
lowing:
Rth evehicl eexhibits particularly sport ydrivin g
characteristics .
Rtheautomatic transmission shifts up later.
The fuel consumption possibl ybein ghigher
as aresult of th elater automatic transmission
shif tpoints .
Rthesuspension exhibits particularly har d
springing and damping settings.
Rgliding mod eis no tavailable.
Rth eECO start/sto pfunction is no tavailable.
Rif aperiod of dynamic drivin gis followed by an
extended phas ewit h a constan taccelerato r
pedal position ,th evehicl eshifts up to a
higher gear .This optimizes fuel consumption .
Drive program I (Individual)
In drive programIth efollowin gproperties of th e
drive program can be selected:
Rth edrive (engin emanagement)
Rth etransmission managemen t
RESP®(Ypage 62 )
Rthesuspension (Ypage 147)
Rtheposition of th eexhaust flap
(Ypage 114)
Information about configuring drive program I
wit hth emultimedia system can be foun din th e
Digital Operator' sManual.
Temporary manual drive program
Genera lnotes
In this drive program ,you can briefl ychang e
gear yourself by usin gth esteering whee lpaddl e
shifters. The transmission mus tbe in position
h to do this.
You can activat eth etemporar ymanual drive
program in th eautomatic drive program .The
switching times correspond to th epreviously
active automatic drive program .
In addition to temporar ymanual drive program
you can also activat emanual mod eM
(
Ypage 123).
Acti vating
XShift th etransmission to position h.
XPull theleft-han dor right-hand steering whee l
paddl eshifte r (Ypage 121).
Temporary manual drive program is activated.
The last active drive program :and selected
gear ;appear in th emultifunction display.
122AMG SPEEDSHIFT DCT 7-speed sports transmission
Driving an d parking

ommended gear is shown in the multifunction
display.
XWhen the corresponding gearshift recom-
mendation:appears in the multifunction
display of the instrument cluster, shift to rec-
ommended gear ;.
Display for shift override
If the engine speed becomes too high or too low
as a result of shifting gear, you cannot shift gear
using the steering wheel paddle shifters. If you
then pull the left-hand or right-hand steering
wheel paddle shifter, segments :light up red
briefly.
Downshifting
XPull the left-hand steering wheel paddle
shifter (Ypage 121).
In cases where it is permissible, the automatic transmission shifts down to the next gear.
XMaximum acceleration: pull the left-hand
steering wheel paddle shifter until the trans-
mission selects the optimum gear for the cur-
rent speed.
If you slow down or stop without shifting down,
the automatic transmission automatically shifts down.
Deactivating
XPress the M button (Ypage 121).
The indicator lamp in the button goes out.
RACE drive program (AMG GT C Road-
ster)
The RACE drive program is designed for maxi-
mum performance in terms of shift points and engine speeds. The engine and transmission
should be at normal operating temperature for
the RACE drive program (
Ypage 170). Use the
RACE drive program on a closed-off race circuit.
The RACE drive program is characterized by the
following:
Rthe vehicle exhibits driving characteristics
suitable for the racetrack.
Rall vehicle systems are set for maximum
sportiness.
Rfor optimum performance, the transmission
shifts up later and shifts down sooner.
Rthe multifunction display shows the manual
gearshift program without upshift indicator
(
Ypage 122).
Rthe gearshift recommendation gives you
information for slowly warming up the drive
assemblies and for adopting a fuel-efficient
driving style (
Ypage 123). You can follow the
gearshift recommendations at all times and
shift gear accordingly using the steering
wheel paddle shifters. On the basis of the
gearshift recommendation, using the steering
wheel paddle shifters, you can optimize the
drive train and engine operating mode at any
time.
Rif you have selected a gear manually, this will be maintained until the vehicle speed increa-
ses or decreases dramatically.
Rif you do not follow the gearshift recommen-
dations, the automatic shift points may resultin high fuel consumption.
Rthe suspension exhibits particularly hard
springing and damping settings.
Rthe transmission shift and response times are
significantly shorter with more aggressive
gear changes. This is particularly the case
when shifting up. The shift strategy is thus
designed to interact dynamically with the
high-revving engine.
Rgliding mode is not available.
Rthe ECO start/stop function is not available.
124AMG SPEEDSHIFT DCT 7-speed sports transmission
Driving and parking

XConnect the cable providedin the trunk to the
trick lecharger.
XConnect the trick lecharger to 12 V socket :.
Consult the manufacturer's operating instruc-
tions on how to doso.
The trunk lidcan beclosed, even ifa trick le
charger isconnected. Make sure that the con-
nector for both the connector cables isoutside
of the veh icle.
The connector can then separate ifthe veh icle is
moved, even ifyou forget to disconnect the con-
nector cables. This prevents damaging the
cables and the trick lecharger.
A trick lecharger connected to 12 V socket :
only maintains the current charge level of the
veh icle's electrical system battery. Ifthe veh i-
cle's electrical system battery is discharged, it
needs to becharged with a battery charger.
Driving tips
General driving tips
Important safety notes
GWAR NING
If you switch off the ignition while driving,
safety-relevant functions are only available
wit hlimit ations, or not at all.This could affect,
for example, the power steering and the brake
boosting effect. You willrequire cons iderably
more effort to steer and brake. There isa risk
of an acc ident.
Do not switch off the ignition while driving.
GWARNING
If you operate mob ilecommunication equip-
ment when driving, you may be distracted
from the traff icsituation. You could also lose
control of the veh icle. There isa risk of an
acc iden t.
Only operate th is equipment when the veh icle
is stationary.
Observe the legal requirements for the country
in whic h you are driving. Some jur isdictions pro-
hibit thedriver from using a mob ilephone while
driv ing a vehicle. If you make a call while driving, always use
hands-free mode. Only
operate the telephone
when the traff icsituation permits. Ifyou are
unsure, pull over to a safe location and stop
before operating the telephone.
Bear in mind that at a speed of only 30 mph
(approximately 50 km/h), the vehicle covers a
distance of 44 ft (approximately 14 m)per sec-
ond.
Drive sensibly – save fuel
Observe the following tips to save fuel:
XThe tires should always be inflated to the rec-
ommended tire pressure.
XRemove unnecessary loads.
XWarm up the engine at low engine speeds.
XAvoid frequent acceleration or braking.
XHave all service and maintenance work car-
ried out at the specified intervals.
Fuel consumption also increases when driving in
cold weather, in stop-start traffic and in hilly ter-
rain.
Drinking and driving
GWARNING
Drinking and driving and/or taking drugs and driving are very dangerous combinations.
Even a small amount of alcohol or drugs can
affect your reflexes, perceptions and judg-
ment.
The possibility of a serious or even fatal acci-
dent is greatly increased when you drink or
take drugs and drive.
Do not drink or take drugs and drive or allow
anyone to drive who has been drinking or tak-
ing drugs.
Emission control
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
Driving tips131
Driving and parking
Z

Calling up the range
XPress theòbutton on the steering wheel
to open the menu list.
XPress :or9 on the steering wheel to
select the Tripmenu.
XPress:or9 to select the approximate
Range.
The approximate range that can be covered
depends on the fuel level and your current
driving style. If there is only a small amount of
fuel left in the fuel tank, a vehicle being refu-
eled C appears instead of approximate
range.
Trip computer "From Start" or "From
Reset"
:Distance
;Driving time
=Average speed
?Average fuel consumption
XPress òon the steering wheel to open the
menu list.
XPress :or9 on the steering wheel to
select the Tripmenu.
XConfirm by pressing aon the steering
wheel.
XPress :or9 to select From Startor
From Reset.
The values in the From
Startsubmenu are cal-
culated from the start of a journey, while the
values in the From Reset
submenu are calcu-
lated from the last time the submenu was reset
(
Ypage 162).
In the following cases the trip computer is auto- matically reset From Start
:
Rthe ignition has been switched off for more
than four hours.
R999 hours have been exceeded.
R9,999 miles have been exceeded.
The From Reset
trip computer is automatically
reset if the value exceeds 9,999 hours or
99,999 miles.
Digital speedometer
XPress òon the steering wheel to open the
menu list.
XPress :or9 on the steering wheel to
select the Tripmenu.
XConfirm by pressing aon the steering
wheel.
XPress the :or9 button to select the
digital speedometer.
Resetting values
XPress òon the steering wheel to open the
menu list.
XPress :or9 on the steering wheel to
select the Tripmenu.
XConfirm by pressing aon the steering
wheel.
XPress the :or9 button to select the
function that you wish to reset.
XPress the abutton.
XPress :to select Yesand press ato
confirm.
You can reset the values of the following func-
tions:
RTrip odometer
R"From Start" trip computer
R"From Reset" trip computer
162Menus and submenus
On-board computer and displays

XTo selectOA/C: turn and press the control-
ler.
XSwitch cooling with air dehumidification on
O or off ª.
iThe current status of the cooling function is
displayed in the climate control bar: A/C ON
– activated, A/C OFF – deactivated.
iDeactivating the cooling with air dehumidi-
fication function reduces fuel consumption.
Synchronizing the climate control set-
tings
Use OSync(synchronization) to select the cli-
mate control setting for all zones together Oor
separately ª.
XCall up the climate control menu
(Ypage 212).
XSlide6the controller repeatedly until the
bottom bar is activated.
XTo select OSync: turn and press the con-
troller.
XSwitch the synchronization function on Oor
off ª.
For further information on synchronizing climate
control settings, see (
Ypage 106).
Navigation mode
Important safety notes
GWARNING
If you operate information systems and com-
munication equipment integrated in the vehi-
cle when driving, you may be distracted from
the traffic situation. You could also lose con-
trol of the vehicle. There is a risk of an acci-
dent.
Only operate this equipment when the traffic
situation permits. If you are not sure that this
is possible, park the vehicle paying attention
to traffic conditions and operate the equip-
ment when the vehicle is stationary.
You must observe the legal requirements for the
country in which you are currently driving when
operating the navigation system.
General notes
Among other things, correct functioning of the
navigation system depends on GPS reception. In
certain situations, GPS reception may be
impaired, there may be interference or there
may be no reception at all, e.g. in tunnels or
parking garages.
The following descriptions apply to navigation
with COMAND. Further information can be
found in the Digital Operator's Manual.
Selecting a route type and route options
Multimedia system:
XSelect NaviQNavigation.
XSelectZQRoute Settings.
iIf route guidance is active, first slide 6the
controller and show the menu.
XSelect a route type.
Notes for route types:
REco Route
Calculates an economic route.
RDynamic Traffic Route(only available in
the USA)
Traffic reports on the route for the route guid-
ance are taken into account.
RCalculate Alternative Routes
Different routes are being calculated. Instead
of Start, select the Continuemenu item.
XTo avoid/use route options: selectAvoid
Options.
XSelect a route option.
Notes for route options:
RUse Toll Roads
The route calculation includes roads which
require you to pay a usage fee (toll).
RUse Carpool Lanes(only available in the
USA)
Prerequisite: your vehicle meets the access
conditions for carpool lanes.
Carpool lanes will be included if the carpool
lanes option is activated.
Entering an address
Multimedia system:
XSelect NaviQNavigation.
XSelectDestinationQAddress Entry.
Operating system213
Multimedia system
Z

Underinflated or overinflated tires
Underinflated tires
GWARNING
Tires with pressure that is too low can over-
heat and burst as a consequence. In addition, they also suffer from excessive and/or irreg-
ular wear, which can severely impair the brak-
ing properties and the driving characteristics.
There is a risk of an accident.
Avoid tire pressures that are too low in all the
tires, including the spare wheel.
Underinflated tires may:
Roverheat, leading to tire defects
Radversely affect handling
Rwear excessively and/or unevenly
Rhave an adverse effect on fuel consumption
Overinflated tires
GWARNING
Tires with excessively high pressure can burst
because they are damaged more easily by
road debris, potholes etc. In addition, they
also suffer from irregular wear, which can
severely impair the braking properties and the driving characteristics. There is a risk of an
accident.
Avoid tire pressures that are too high in all the
tires, including the spare wheel.
Overinflated tires may:
Rincrease the braking distance
Radversely affect handling
Rwear excessively and/or unevenly
Rhave an adverse effect on ride comfort
Rbe more susceptible to damage
Maximum tire pressures
:Example: maximum permissible tire pres-
sure
Never exceed the maximum permissible tire
inflation pressure. Always observe the recom-
mended tire pressure for your vehicle when
adjusting the tire pressure (
Ypage 264).
iThe actual values for tires are vehicle-spe-
cific and may deviate from the values in the
illustration.
Checking the tire pressures
Important safety notes
Observe the notes on tire pressure
(Ypage 264).
Information on air pressure for the tires on your
vehicle can be found:
Ron the vehicle's Tire and Loading Information
placard on the B-pillar
Rin the tire pressure table in the fuel filler flap
(Ypage 126)
Rin the "Tire pressure" section
Checking tire pressures manually
To determine and set the correct tire pressure,
proceed as follows:
XRemove the valve cap of the tire that is to be
checked.
XPress the tire pressure gage securely onto the
valve.
XRead the tire pressure and compare it to the
recommended value on the Tire and Loading
Information placard or the tire pressure table
(
Ypage 264).
266Tire pressure
Wheels and tires