2018 MERCEDES-BENZ CLA COUPE width

Display when DistancePilot DISTRONIC is
deactivate d
In theAssistance men u(Ypage 184) of th eon-
boar dcom puter, you can select th eassistanc e
display.
:Vehicl einfront,ifd etecte d
;Distanc eind icator, curren tdistanc etothe
vehicl einfront
=Specified minimum distanc etothevehicl e
in front; adjustable
?Your vehicl e
XSelectthe Assistanc eGraphi cfunction
usin gthe on-boar dcom puter (Ypage 185).
Display when Distanc ePilot DISTRONIC is
activate d
You will initially see th estoreds peed fo rabout
fiv es econds when you activat eDistance Pilot
DISTRONIC.
:Vehicl einfront,ifd etecte d
;Specified minimum distanc etothevehicl e
in front; adjustable
=Your vehicl e
?DistancePilotD ISTR ONIC active (tex tonly
appears when th ecruise control lever is
actuated)
XSelec tthe Assistanc eGraphi cfunction
usin gthe on-boar dcom puter (Ypage 185).
Tips for drivin gwithD istanc ePilot
DISTRONIC
General notes
Pay particular attention in th efollowing traffic
situations:
RCornering, enterin gand exitin gabend: th e
abilit yofD istance PilotDISTR ONIC to detec t
vehicles during cornering is limited. Your vehi-
cle may brak eunexpectedly or late.
RDriving on adifferen tline: Distanc ePilot
DISTRONIC may no tdetec tvehicles whic hare
no td rivin gint hemiddle of their lane. The dis-
tance to th evehicl einf rontwill be to oshort .
ROther vehicles changin glanes: Distanc ePilot
DISTRONIC has no tdetecte dthe vehicl ecut-
ting in yet .The distanc etothisv ehicl ewill be
to os hort .
RNarrow vehicles: Distanc ePilotD ISTR ONIC
has no tyet detecte dthe vehicl einfronton
th ee dgeoft heroa dbecause of it snarrow
width. The distanc etothevehicl einfrontwill
be to oshort .
RObstacles and stationary vehicles: Distanc e
Pilo tDISTR ONIC doe snotbrak efor obstacles
or stationary vehicles. If ,for example, th e
detecte dvehicl eturns acorner and an obsta-
cle or stationary vehicl eisthenr evealed ,Dis-
tance Pilo tDISTR ONIC will no tbrak efor
them.
RDistanc ePilotD ISTR ONIC may mistakenly
detec tvehicles th at are crossin gyour lane. If
you activat eDistance PilotDISTR ONIC in th e
following situations, th evehicl ecould pull
away unintentionally:
-At traffic lights wit hcrossin gtraffic, fo r
example.
-Wit hav ehicl eahead on th eother side of an
intersection and th eHOLDf unction active .
In suc hsituations, brak eifnecessary. Distanc e
Pilo tDISTR ONIC will then be deactivated.
156Driving systems
Driving an dparking

AYellow guide line atadistance of approx-
imately 3ft(1.0m)f rom the rear of the vehi-
cle
BVehicle center axle (marker assistance)
CBumper
DRed guide line at adistance of approximately
12 in (0.3 0m)from the rear of the vehicle
:Front warnin gdisplay
;Additional measurement operational readi-
ness indicator for Parking Assist
PARKTRONIC
=Rear warnin gdisplay
When Parking Assist PARKTRONIC is opera-
tional (
Ypage 162),a dditional measurement
operational readiness indicator ;appears in
the multimedia syste mdisplay. If the Parking
Assist PARKTRONIC warnin gdisplays are active
or light up, warnin gdisplays :and =are also
active or light up correspondingly in the multi-
media syste mdisplay.
"Reverse parking" function
Backing up straight into aparkin gspace
withou tsteering input
:Whiteg uide line without steeringi nput –
vehicle width including the exterior mirrors
(static)
;Yellow guide line for the vehicle width
including the exterior mirrors, for current
steeringw heel angle (dynamic)
=Yellow guide line at adistance of approx-
imately 3ft(1.0m )from the rear of the vehi-
cle
?Red guide line at adistance of approximately
12 in (0.30 m) from the rear of the vehicle
XMake sure that the rear view camer ais
switched on (Ypage 168).
The lane and the guide lines are shown.
XWith the help of white guide line :,check
whether the vehicle will fit int othe parking
space.
XUsingw hite guide line :asag uide, carefully
back up until you reach the end position.
Red guide line ?is the natthe end of the
parking space. The vehicle is almost parallel
in the parking space.
Driving systems169
Driving and parking
Z

Reverse perpendicular parkingwiths teer-
in gi np ut
:Parking space marking
;Yellow guid elinef or the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
XDrive past the parking space and bring the
vehicle to astandstill.
XMake sure that the rearv iewc amera is
switched on (Ypage 168).
The lane and the guid elines are shown.
XWhile the vehicle is at astandstill, turn the
steering wheel in the direction of the parking
space unti lyello wguide line;reaches park-
ing space marking :.
XMaintain the steering input and reverse care-
fully.
:Yellow guidelinef or the vehicle width
including the exterior mirrors, for current
steering wheel angle (dynamic)
XStop the vehicle whe nitisalmost exactly in
front of the parking space.
The white lane shoul dbeasclose to parallel
with the parking space marking as possible.
:White guid elinef or current steering input
;Parking space marking
XTurn the steering wheel to the center position
while the vehicle is stationary.
:Re dg uide line at adistance of approximately
12 in (0.30 m) fromthe rearofthe vehicle
;White guid elinew ithou tsteering input
=End of parking space
XBac kupcarefull yuntilyou have reache dthe
final position.
Re dg uide line:is thenate nd of parking
space =.The vehicl eisalmostp aralle linthe
parking space.
170Driving system s
Driving an dparking

Checkwheelsand tires for damag eatleast once
am onth .Checkw heelsa nd tires after driving
off-road or on roug hroads. Damaged wheels
can caus ealoss of tir epressure. Pay particular
attentio ntodamagesucha s:
RCutsinthet ires
RPunctures inthet ires
RTearsint hetires
RBulges on tires
RDeformation or severe corrosiononw heels
Regularly check thetiret read dept hand the
conditio nofthetread across th ewhole widthof
th et ire(
Ypage 288). Ifnecessary, tur nthe
frontw heelstof ull lockino rder to inspectt he
inner sideof thetires urface.
All wheelsm ust haveavalvec ap to protect the
valv eagainst dirtand moisture. Do no tmount
anythingo ntot he valv eother than th estandard
valv ecap or other valv ecaps approved by
Mercedes-Ben zfor your veh icle.Don otuse any
other valv ecaps or systems ,e.g.t irep ressure
monitorin gsystems.
Regularly check thepressureofa llth et ires par-
ticularly priortol ongt rips. Adjus tthe tirep res-
sure as necessary (
Ypage 290).
Observ ethe note sont heemergenc yspare
wheel (
Ypage 312).
The servic elife of tires depends, amon gother
things, on th efollowin gfactors:
RDrivin gstyle
RTire pressure
RDistance covered
Notes on tir etread
GWAR NING
In suff icient tir etread will reduce tir etraction.
The tir eisnol ongerabletodissipat ewater.
This mean stha tonw et road surfaces ,the risk
of hydroplaning increases, inparticular where
speedisn otadapted to suit th edriving con-
dit ions. Thereisar iskofa cciden t.
If th et irep ressureist oohigh or to olow, tires
may exhibit diff erent levelsof wear at differ-
entl ocations on th etiret read. Thus,y ou
should regularly check th etread dept hand
th ec onditio noft hetread across th eentire
widt hofa lltires.
Minimum tir etread depthf or:
RSummer tires: âin(3 mm)
RM+S tires: ãin(4 mm)
For safety reasons, replace th etires before
th el egally prescribe dlimit for th eminimum
tir et read depthisr eached.
Marking:shows whereb ar indicator ;for
tread wear is integrate dintot he tiret read.
Treadwear indicators (TWI)a re requiredbylaw.
Six indicators are positione donthetiret read.
They are vis ibleonce atread depthofa pprox-
imately áin(1. 6m m) has been reached. Ifthis
is thec ase, th etireissow orn that it must be
replace d.
Selecting, mounting and replacing
tires
GWARNING
Exceedingt hestate dtirel oad-bearing capa-
cit ya nd th eapprove dmaximum speedc ould
lead to tir edamag eorthetireb ursting. There
is ar iskofa ccident.
Therefore, only use tiretype sand sizes
approve dfor your vehicle model. Observ ethe
tir el oad rating and speedr ating required for
your vehicle.
ROnly moun ttires and wheelsoft hesame type
and make.
Exception: itis permissible to install adiffer-
entt ype or mak eintheevent of aflat tire.
Observ eheret he"MOExtended tires (tires
288Operation
Wheels and tires

Permissible Gross Vehicle Weight Rating
(GVWR):the gross weight of the vehicle, all pas-
sengers, load and trailer load/noseweight (if
applicable) must not exceed the permissible
gross vehicle weight.
Gross Axle Weight Rating (GAWR): the maxi-
mum permissible weight that can be carried by
one axle (front or rear axle).
To ensure that your vehicle does not exceed the
maximum permissible values (gross vehicle
weight and maximum gross axle weight rating),
have your loaded vehicle (including driver, occu-
pants, cargo, and full trailer load if applicable)
weighed on asuitable vehicle weighbridge.
All about wheelsa nd tires
Uniform Tire Quality Grading Stand-
ards
Overview of Tire Quality Grading Stand-
ards
Uniform Tire Quality Grading Standards are U.S. governments pecifications. Their purpose is to
provide drivers with uniform reliable information
on tire performance data. Tire manufacturers
have to grade tires using three performance fac-
tors: :tread wear grade, ;traction grade and
= temperature grade. These regulations do not
apply to Canada. Nevertheless, all tires sold in
North America are provided with the corre-
sponding quality grading markings on the side-
wall of the tire.
Quality grades can be found, where applicable,
on the tire sidewallb etween tread shoulder and
maximum section width. Example:
RTreadwear grade:
200
RTraction grade:AA
RTemperaturegrade:A
All passenger car tires must conformtot he stat-
utory safety requirements in addition to these
grades.
iThe actual values for tires are vehicle-spe-
cific and may deviate from the values in the
illustration.
Treadwear
The treadwear grade is acomparative rating
based on the wear rate of the tire when tested
under controlled conditionsonas pecified U.S.
governmentc ourse. For example, atire graded
150 would wear one and one-half times as well
on the governmentc ourse asatire graded 100.
The relative performance of tires depends upon the actual conditionsoft heir use, however, and
may depart significantly from the norm due to
variations in driving habits, service practices
and differences in road characteristics and cli-
mate.
Traction
GWARNING
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration, cor-
nering, hydroplaning, or peak traction char-
acteristics.
!Avoid wheelspin. This can lead to damage to
the drive train.
The traction grades –from highest to lowest –
are AA, A, Band C. Those grades represent the
tire's ability to stop on wet pavement as meas-
ured under controlled conditionsons pecified
governmentt est surfaces of asphalt and con-
crete. Atire marked Cmay have poor traction
performance.
The safe speed on awet, snow covered or icy
road is always lower than on dry road surfaces.
You should pay special attention to road condi-
tions when temperatures are around freezing
point.
Mercedes-Benzr ecommendsaminimum tread
depth of ãin (4 mm) on all four winter tires.
All about wheels and tires301
Wheels and tires
Z

tire load rating and speedrating required for
your vehicle.
:Tire width
;Nomina laspec tratio in %
=Tire code
?Rimd iame ter
ALoadb earing index
BSpeed rating
General: depending on the manufacturer's
standards ,the size imprinted in the tire wall may
not contain any letters or mayc ontain one letter
thatp recedes the size description.
If there is no letter preceding the size descrip-
tio n(as shown above): these ar epassenger
vehicl etiresa ccording to Europea nmanufac-
turing standards.
If "P "precedes the size description: these are
passenge rvehicl etiresa ccording to U.S. man-
ufacturin gstandards.
If "LT" precedes the size description: these are
light truck tire saccording to U.S. manufacturing
standards.
If "T "precedes the size description: compact
emergency wheels with high tire pressure that
ar eo nlyd esig nedf or temporary us einanemer-
gency.
Tire width: tire width:shows the nominal tire
width in millimeters.
Aspec tratio: aspect ratio ;is the size ratio
between the tire height and tire width and is
shown in percent. The aspect ratio is calculated
by dividing the tire width by the tire height.
Tire code: tire code=specifie sthe tire type.
"R "r epresents radial tires; "D" represents diag-
ona ltire s; "
B" represents diagona
lradial tires.
Optionally ,tire sw itham aximum spee dofover
149 mph (240 km/h )mayhave "ZR" in the size description, depending on the manufacturer
(e.g. 245/40Z
R18).
Rim diameter: rim diameter?is the diameter
of the bead seat, not the diamete rofthe rim
flange .The ri mdiame teriss pecifie din
inches (in).
Load-bearin gind ex: load-bearing index Ais a
numerical cod ethats pecifie sthe maximum
load-bearing capacity of atire.
Do not overload the tire sbyexceeding the
specifie dloa dlimit .The maximu mpermissible
load can be found on the vehicle's Tire and
Loading Informatio nplacard on the B-pillar on
the driver's side (
Ypage 298).
Example:
Load-bearin gindex 91 indicates amaximum
load of 1,356 lb (61 5kg)thatt he tire scan bear.
For furtheri nformation on the maximum tire
load in kilograms and lbs, see(
Ypage 304).
For furtheri nformation on the load bearing
index, see" Loadindex" (
Ypage 304).
Speed rating: speedrating Bspecifie sthe
approved maximum spee dofthe tire.
iTire data is vehicle-specific and mayd eviate
fromt he data in the example.
Regardles softhe spee drating ,alway sobser ve
th

e spee dlimit s. Drive carefull yand adap tyou r
drivin gstyle to the trafficc onditions.
Summert ires
IndexSpeed rating
Qup to 100 mph (16 0km/h)
Rup to 106 mph (17 0km/h)
Sup to 112 mph (18 0km/h)
Tup to 118 mph (19 0km/h)
Hup to 130 mph (21 0km/h)
Vup to 149 mph (24 0km/h)
Wup to 168 mph (27 0km/h)
Yup to 186 mph (30 0km/h)
ZR...Yup to 186 mph (30 0km/h)
ZR...(..Y)ove r186 mph (300 km/h)
ZRove r149 mph (240 km/h)
ROptionally ,tire sw itham aximum spee dof
ove r149 mph (24 0km/h )mayhave "ZR" in
Alla bout wheels an dtires303
Wheel sand tires
Z

PSI (pounds per squareinch)
Astandard unit of measure for tire pressure.
Aspect ratio
Relationship between tire height and tire width
in percent.
Tire pressure
This is pressure inside the tire applying an out-
ward force to each square inch of the tire's sur-
face. The tire pressure is specified in pounds per
square inch (psi), in kilopascal (kPa) or in bar.
The tire pressure should only be corrected when
the tires are cold.
Cold tire pressure
The tires are cold:
Rif the vehicle has been parked with the tires
out of direct sunlight for at least three hours
and
Rif the vehicle has not been driven further than
1m ile (1.6 km)
Tread
The part of the tire that comes into contact with
the road.
Bead
The tire bead ensures that the tire sits securely
on the wheel. There are several steel wires in the
bead to prevent the tire from coming loose from
the wheel rim.
Sidewall
The part of the tire between the tread and the
bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
parts and more than 2.3 kg (5 lbs). These
optional extras, such as high-performance
brakes, level control, aroof rack or ahigh-per-
formanceb attery, are not included in the curb
weight and the weight of the accessories.
TIN (Tire Identification Number)
This is aunique identifier which can be used by
at ire manufacturer to identify tires, for example
for aproduct recall, and thus identify the pur-
chasers. The TIN is made up of the manufactur-
er's identity code, tire size, tire type code and
the manufacturing date.
Load bearing index
The load bearing index (also load index) is acode
that contains the maximum load bearing capa-
city of atire.
Traction
Traction is the result of friction between the tires
and the road surface.
Treadwear indicators
Narrow bars (tread wear bars) that are distrib-
uted over the tire tread. If the tire tread is level
with the bars, the wear limit of áin (1.6 mm)
has been reached.
Occupant distribution
The distribution of occupants in avehicle at their
designated seating positions.
Total load limit
Nominal load and luggage load plus 68 kg
(15 0lbs)m ultiplied by the number of seats in
the vehicle.
Changing awheel
Flat tire
The "Breakdown assistance" section
(Ypage 271) contains information and notes on
how to deal with aflat tire. Information on driv-
ing with MOExtended tires in the event of aflat
tire can be found under "MOExtended tires (tires
with run-flat characteristics" (
Ypage 271).
Rotating the wheels
GWARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels or tires have different dimensions. The wheel brakes or suspension components
may also be damaged. There is arisk of acci-
dent.
Rotate front and rear wheels only if the wheels and tires are of the same dimensions.
!On vehicles equippedw ithatire pressure
monitor ,electronic components are located
in the wheel.
Changing awheel307
Wheels and tires
Z

Refrigerant instructionlabel
Example:refrigerant instruction label
:
Warning symbol
;Refrigerant filling capacity
=Applicabl estandards
?PAG oilp artn umber
AType of refrigerant
Warning symbol :advises yo uabout :
RPossible dangers
RHaving service work carrie doutataq uali fied
specialist workshop
Fillin gcapacities
ModelRefrigerant
Mercedes ‑AMG
vehicles23.6 ±0.4 oz
(670 ±10g )
Allo the rm odels22.9 ±0.4 oz
(650 ±10g )
ModelPAG oil
All models4.2 oz
(120 g)
Vehicle data
General notes
Please note that for the specified vehicled ata:
RThe heights specified may vary asaresul tof:
-Tires
-Load
-Condition of the suspension
-Optionale quipment
ROptionalequipment reduces the maximum
payload.
Dimensions and weights
Model:
Height when opened
Mercedes‑AM Gvehicles68.0 in
(1727 mm)
All other models68.3 in
(1737 mm)
Model
Vehicle width
including exterior
mirrors80.0 in (2032 mm)
Wheelbase106.3 in (2699 mm)
Turning radius36.1 ft (11.0 m)
Turning circle,
Mercedes-AMG
vehicles36.2 ft (11.04 m)
320Vehicle data
Technical data