Mercedes-Benz AMG GT Operator's Manual page 409

406 Technical data
%
Vehicles with M256 petrol engine: if you are
using 95 RON, there may be slight limitations
in performance that have no further conse-
quences.
For maximum engine output: refuel only with
super unleaded petrol with an octane number of
at least 98 RON. Alternatively, you can also refuel
using premium-grade unleaded petrol with an
octane number of at least 95 RON.
In exceptional cases, if the recommended fuel is
not available, you may also use regular unleaded
petrol with an octane number of at least 91 RON.
This may reduce engine output and increase fuel
consumption.
Never refuel using petrol of an even lower RON.
Further information on fuel can be obtained at a
filling station or a qualified specialist workshop.
▌Information on additives in petrol (vehicles with
petrol engine)
Observe the notes on operating fluids
( page 403).
/
* NOTE Damage from use of unsuitable
additives
Even small amounts of the wrong additive may
lead to malfunctions occurring.
Only add cleaning additives recommen-
#
ded by Mercedes-Benz to the fuel.
Mercedes-Benz recommends that you use brand-
name fuels with additives.
In some countries, the fuel available may not have
sufficient additives. Deposits could build up in the
fuel injection system as a result. In this case, in
consultation with a qualified specialist workshop
(e.g. a Mercedes-Benz service centre), mix the
fuel with the cleaning additive recommended by
Mercedes-Benz. Observe the notes and mixing
ratios indicated on the tank.
▌Tank content and fuel reserve
Not for plug-in hybrid:
The tank content may vary depending on the vehi-
cle's equipment.
Total fuel tank capacity
Model
Mercedes-AMG GT 43
4‑door Coupé
Mercedes-AMG GT 43
4‑door Coupé 4MATIC
+
Mercedes-AMG GT 53
4‑door Coupé 4MATIC
+
Mercedes-AMG GT 63
4‑door Coupé 4MATIC
+
Mercedes-AMG GT 63
S 4‑door Coupé
4MATIC+
66.0 litres
or
80.0 litres
80.0 litres