Kia Stonic 2019, Owner'S Manual, Page: 8 / 611

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Introduction
Use of MTBE
Kia recommends avoiding fuels con-
taining MTBE (Methyl Tertiary Butyl
Ether) over 15.0% vol. (Oxygen
Content 2.7% weight) in your vehicle.
Fuel containing MTBE over 15.0%
vol. (Oxygen Content 2.7% weight)
may reduce vehicle performance and
produce vapour lock or hard starting.
Do not use methanol
Fuels containing methanol (wood
alcohol) should not be used in your
vehicle. This type of fuel can reduce
vehicle performance and damage
components of the fuel system,
engine control system and emission
control system.
Fuel Additives
Kia recommends that you use
unleaded petrol which has an octane
rating of RON (Research Octane
Number) 95 / AKI (Anti Knock Index)
91 or higher (for Europe) or Octane
Rating of RON (Reasearch Octane
Number) 91 / AKI (Anti-Knock Index)
87 or higher (except Europe).
For customers who do not use good
quality petrols including fuel addi-
tives regularly, and have problems
starting or the engine does not run
smoothly, one bottle of additives
added to the fuel tank at every
15,000km (For Europe) / 10,000km
(Except Europe). Additives are avail-
able from a professional workshop
along with information on how to use
them. Kia recommends to visit an
authorised Kia dealer/service part-
ner. Do not mix other additives.
CAUTION
Your New Vehicle Limited
Warranty may not cover damage
to the fuel system and any per-
formance problems that are
caused by the use of fuels con-
taining methanol or fuels con-
taining MTBE (Methyl Tertiary
Butyl Ether) over 15.0% vol.
(Oxygen Content 2.7% weight.)