Mon, 04 May 2026 05:06:41 +0000

What They Never Tell You About Flex Fuel – You’ll Regret Not Knowing! Flex Fuel has been hailed as a revolutionary advancement in automotive fuel technology, promising lower emissions, greater energy efficiency, and compatibility with a range of biofuels—primarily E85 (85% ethanol, 15% gasoline). While many drivers are excited about the promise of Flex Fuel, there’s more beneath the surface than the glossy marketing claims. If you’re considering switching or just curious, here’s what they never tell you about Flex Fuel—details that could impact your wallet, engine longevity, and overall performance. ### 1. Flex Fuel Isn’t “Free Gas” — Ethanol Hurts Performance At first glance, Flex Fuel seems like a cheap, green energy win. However, ethanol contains about 34% less energy per gallon than pure gasoline. This means Flex Fuel vehicles often experience reduced MPG compared to traditional gas, especially if you drive in cold conditions or toward higher ethanol blends like E90 (pure ethanol). Don’t expect unlimited savings—this cost-effectiveness fades depending on driving habits and fuel composition.