Use of MTBE

~1min read

As recommended, fuel containing more than 15.0% MTBE (methyl tertiary butyl ether) (oxygen content 2.7% by weight) should not be used in your vehicle.

Fuel with an MTBE concentration greater than 15.0% (oxygen content 2.7% by weight) may reduce vehicle performance and cause vapor lock and starting problems.

CAUTION The Limited Warranty for your new vehicle may not cover fuel system repair costs and damage causing loss of performance resulting from the use of gasoline containing any methanol or more than 15.0% methyl tertiary butyl ether (MTBE).

(Oxygen content 2.7% by weight).

Test yourself

A quick Kia Rio YB quiz: every answer comes with an explanation and a link to the manual page.