Inmetro consumption: use, but don’t trust

Numbers released by automakers according to the institute's standards are far from reality, but they are still useful

The circumstances of the tests are not the day-to-day practices (Photomontage: AutoPapo)
By Boris Feldman
Published on 2026-02-03 at 06:00 PM

The brand new car has an Inmetro label, which reveals some of the characteristics of this model. And what matters a lot to the customer is fuel consumption, but are these consumption figures reliable? Yes and no.

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The official consumption of the car is measured with the use of a gasoline that has 22% ethanol. It is E22, when in fact the gasoline supplied by the station today has 30% ethanol. It already makes a reasonable difference.

And the other distortion is because these consumption values are measured by simulation in laboratories. However, as there are the same distortions in all models, it is worth the reference. The customer can compare the consumption between two models.

Boris Feldman

Journalist and engineer with 50 years of experience in the automotive press. Led newspaper and television teams and hosts the AutoPapo program on radio stations across the country.

Boris Feldman
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