!
Never refuel using:
R Diesel
R Gasoline with more than 10% ethanol by
volume, e.g. E15, E20, E85, E100
R Gasoline with more than 3% methanol by
volume, e.g. M15, M30, M85, M100
R Gasoline with metalliferous additives
Do not mix such fuels with the fuel recom-
mended for your vehicle.
! To ensure the longevity and full perform-
ance of the engine, only premium-grade
unleaded gasoline may be used.
If premium-grade unleaded gasoline is
unavailable and you have to refuel with regu-
lar unleaded gasoline, observe the following
precautions:
R Only fill the fuel tank to half full with regular
unleaded gasoline and add the rest as soon
as possible with premium-grade unleaded
gasoline.
R Do not drive at the maximum design speed.
R Avoid sudden acceleration and engine
speeds over 3000 rpm.
i For more information, please contact a
qualified specialist workshop or visit
http://www.mbusa.com (USA only).
As a temporary measure, if the recommended
fuel is not available, you may also use regular
unleaded gasoline with an octane rating of
87 AKI/91 RON. This may reduce engine per-
formance and increase fuel consumption. Avoid driving at full throttle and sudden acceleration.
Never refuel using gasoline with a lower AKI.
Information on refueling (Y page 156).
Additives ! Operating the engine with fuel additives
added later can lead to engine failure. Do not mix fuel additives with fuel. This does not
include additives for the removal and preven-
tion of residue buildup. gasoline must only be
mixed with additives recommended by
Mercedes-Benz. Comply with the instructions for use on the product label. More information
about recommended additives can be
obtained from any authorized Mercedes-Benz
Center.
Mercedes-Benz recommends that you use bran- ded fuels that have additives. The fuel quality available in some countries may
not be sufficient. Residue could build up in the
fuel injection system as a result. In such cases, and in consultation with an authorized
Mercedes-Benz Center, the fuel may be mixed
with the cleaning additive recommended by
Mercedes-Benz. You must observe the notes
and mixing ratios specified on the container. Engine oil
General notes !
Do not use engine oil or an oil filter with
specifications deviating from those expressly required for the prescribed service intervals.
Do not change the engine oil or oil filter in
order to set replacement intervals longer than
those prescribed. This could otherwise cause damage to the engine or exhaust gas after-
treatment.
Follow the instructions on the service interval display for changing the engine oil. This could
otherwise cause damage to the engine or
exhaust gas aftertreatment.
When handling engine oil, observe the important safety notes on service products (Y page 384).
The engine oils are matched to the performance of Mercedes-Benz engines and service intervals.
You should therefore only use engine oils and oil filters that are approved for vehicles with main-
tenance systems.
For a list of approved engine oils and oil filters,
consult an authorized Mercedes-Benz Center.
Alternatively, visit the website
http://bevo.mercedes-benz.com.
The table shows which engine oils have been
approved for your vehicle. 386
Service products and filling capacitiesTechnical data
Model MB-Freigabe or
MB-Approval All models
229.5, 229.6
Mercedes‑AMG vehicles
229.5
Mercedes-AMG vehicles:
only use SAE 0W-40
or SAE 5W-40 engine oils.
i MB approval is indicated on the oil contain-
ers.
Filling capacities The following values refer to an engine oil
change, including the oil filter.
Model Capacity
GLS 550 4MATIC
Mercedes‑AMG
vehicles
9.0 US qt (8.5
l) All ot
her models 7.4 US qt (7.0
l) Ad
ditives !
Do not use any additives in the engine oil.
This could damage the engine. Brake fluid
G
WARNING
The brake fluid constantly absorbs moisture
from the air. This lowers the boiling point of
the brake fluid. If the boiling point of the brake fluid is too low, vapor pockets may form in the brake system when the brakes are applied
hard. This would impair braking efficiency.
There is a risk of an accident.
You should have the brake fluid renewed at
the specified intervals.
Comply with the important safety notes for ser- vice products when handling brake fluid
(Y page 384).
Use only brake fluid approved for Mercedes-
Benz according to MB-Freigabeor MB-Approval
331.0.
Information about approved brake fluid can be
obtained at any qualified specialist workshop or on the Internet at
http://bevo.mercedes-benz.com.
i Have the brake fluid regularly replaced at a
qualified specialist workshop in accordance
with the replacement intervals and the
replacement confirmed in the service report. Coolant
Important safety notes G
WARNING
If antifreeze comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is a risk of fire and injury.
Let the engine cool down before you add anti-
freeze. Make sure that antifreeze is not spilled
next to the filler neck. Thoroughly clean the
antifreeze from components before starting
the engine.
! Only add coolant that has been premixed
with the desired antifreeze protection. You
could otherwise damage the engine.
You can find additional notes on the coolant in
the following places:
R in the Mercedes-Benz Specifications for
Service Products, MB BeVo 310.1
- on the Internet at
http://bevo.mercedes-benz.com
- on the Mercedes-Benz BeVo app
R a qualified specialized workshop
! Always use a suitable coolant mixture, even
in countries where high temperatures prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosion and
overheating.
i Have the coolant regularly replaced at a
qualified specialist workshop and the replace- ment confirmed in the service report.
Comply with the important safety notes for ser- vice products when handling coolant
(Y page 384). Service products and filling capacities
387Technical data Z
cable regulations, as well as SAE standard J639,
must be adhered to.
Always have work on the climate control system
carried out at a qualified specialist workshop.
Refrigerant instruction label Example: refrigerant instruction label
0043 Warning symbol
0044 Refrigerant filling capacity
0087 Applicable standards
0085 PAG oil part number
0083 Type of refrigerant
Warning symbol 0043advises you about:
R Possible dangers
R Having service work carried out at a qualified
specialist workshop
Filling capacities Refrigerant Capacity
All models
45.9 ± 0.4 oz
(1300 ± 10 g) PAG oil Capacity
All models
3.9 ± 0.4 oz
(110 ± 10 g) Vehicle data
General notes
Please note that for the specified vehicle data: R The heights specified may vary as a result of:
- Tires
- Load
- Condition of the suspension
- Optional equipment
R Optional equipment reduces the maximum
payload
Observe the information relating to level con-
trol:
R AIRMATIC Package (Y page 187)
R Offroad Engineering package (Y page 217) Dimensions and weights
Missing values were not available at time of
going to print.
Model
0043 0043
Height when
opened 0044
0044
Max.
headroom Mercedes-
AMG GLS 63
4MATIC Vehicle data
389Technical data Z
All other mod-
els with 0043
0043
Height when
opened 0044
0044
Max.
headroom AIRMATIC
Package
83.9 in -
86.9 in
(2132 mm - 2207 mm) 76.1 in -
79.1 in
(1934 mm - 2009 mm) Offroad
Engi-
neering pack-
age 83.9 in -
88.1 in
(2132 mm - 2237 mm) 76.1 in -
80.3 in
(1934 mm - 2039 mm) Merc
edes‑AMG GLS 63 4M
ATIC Vehicle length
203.2 in
(5162 mm) Vehicle width including
exterior mirrors
84.3 in
(2141 mm) Vehicle width without exte-
rior mirrors 78.0 in
(1982 mm) Vehicle height
72.9 in
(1850 mm) Wheelbase
121.1 in
(3075 mm) Maximum ground clear-
ance
Minimum ground clear-
ance
7.8 in
(198 mm) Turning radius
40.7 ft
(12.40 m) Maximum roof load
220 lbs
(100 kg) All other models
Vehicle length
202.0 in
(5130 mm) Vehicle width including
exterior mirrors
84.3 in
(2141 mm) All other models
Maximum vehicle height
(AIRMATIC package)
75.2 in
(1910 mm) Maximum vehicle height
(Off-Road Engineering
package) 76.4 in
(1940 mm) Minimum vehicle height
72.8 in
(1850 mm) Wheelbase
121.1 in
(3075 mm) Maximum ground clear-
ance (AIRMATIC package)
10.9 in
( 276 mm) Maximum ground clear-
ance (Off-Road Engineer-
ing package)
12.0 in
(306 mm) Minimum ground clear-
ance
7.9 in
(201 mm) Turning radius
40.7 ft
(12.40 m) Maximum roof load
220 lb
(100 kg) Vehicle data for off-road driving
Maximum water depth
! The water depth must not exceed the speci-
fied value. Note that the permissible water
depth is less in flowing water. Maximum water depth
0043consult the following
table.
On vehicles with the AIRMATIC package or the
Off-Road Engineering package, loads up to the 390
Vehicle data for off-road drivingTechnical data
maximum permissible load have no influence on
the maximum water depth.
Missing values were not available at time of
going to print. Model Maximum
water
depth Vehicles with the AIRMATIC
package 19.7 in
(50 cm) Vehicles with the Off-Road
Engineering package
Off-road levels 1 and 2
19.7 in
(50 cm) Vehicles with the Off-Road
Engineering package
Off-road level 3
23.6 in
(60 cm) Mercedes-AMG vehicles
For more information about off-road fording, see
(Y page 165). Approach/departure angle
0043
Angle of approach
0044 Angle of departure
You can find the angles of approach and depar-
ture in the following table.
On vehicles with the AIRMATIC package or the
Off-Road Engineering package, loads up to the
maximum permissible load have no influence on approach and departure angles. All vehicles (except vehicles with AMG body-
styling) Model
0043 0043 0044
0044
Vehicles without the Off-
road Engineering package
Normal level 25° 20°
Raised level 30° 25°
Vehicles with the Off-
Road Engineering pack-
age
Normal level 25° 20°
Off-road level 1 28° 23°
Off-road level 2 30° 25°
Off-road level 3 33° 27°
Mercedes-AMG vehicles
Normal level (in sports
mode with AMG adaptive
sport suspension system) 19° 19°
Raised level 22° 21°
Vehicles with AMG bodystyling
Model
0043 0043 0044
0044
Vehicles without the Off-
road Engineering package
Normal level 22° 20°
Raised level 27° 25°
Vehicles with the Off-
Road Engineering pack-
age
Normal level 22° 20°
Off-road level 1 25° 23°
Off-road level 2 27° 25°
Off-road level 3 29° 27°
For further information about approach/depar-
ture angles, see (Y
page 169). Vehicle data for off-road driving
391Technical data Z
Maximum gradient-climbing capabil-
ity
Note that the vehicle's gradient-climbing capa-
bility depends on the off-road conditions and the road surface conditions.
Missing values were not available at time of
going to print. Model Maximum gradient-
climbing capability Vehicles without
the Offroad Engi-
neering package
80%
Vehicles with the
Off-Road Engineer-
ing package
With LOW RANGE off-
road gear switched
on 100%
Mercedes-AMG
GLS 63 4MATIC
If the load on the front axle is reduced when
pulling away on a steep uphill slope, the front
wheels have a tendency to spin. Accelerate
carefully and make sure that the wheels do not
spin when driving on steep terrain.
For further information about the maximum gra- dient climbing ability, see (Y page 170).Trailer tow hitch
Mounting dimensions
! If you have a trailer tow hitch retrofitted,
changes to the cooling system and drive train
may be necessary, depending on the vehicle
type.
If you have a trailer tow hitch retrofitted,
observe the anchorage points on the chassis
frame. 0043
Anchorage points for the trailer tow hitch
0044 Rear axle center line Trailer loads
Permissible trailer load, braked (at a
minimum gradient-climbing capability
of 12% from a standstill) Model
All models
7500 lbs (3402 kg)
Maximum drawbar noseweight
The drawbar noseweight is not included in the
trailer load.
Model
All models
600 lbs (272 kg)
The actual noseweight may not be higher than
the value which is given. The value can be found
on the trailer tow hitch or trailer identification
plates. The lowest weight applies.
The maximum permissible trailer drawbar nose-
weight is the maximum weight with which the
trailer drawbar can be loaded. Limit for
Mercedes-Benz-approved trailer couplings. 392
Trailer tow hitchTechnical data
Permissible rear axle load when towing
a trailer Model
All models
3968 lbs (1800 kg)
Ball position of the ball coupling
0043
7.5 in
0044 2.0 in
0087 2.75 in
When choosing a ball coupling, the dimensions
stated in the illustration must not be exceeded. Trailer tow hitch
393Technical data Z