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Flex Fuel: Brazilian Invention That Dominates More Than 80% Of The National Fleet, Challenged Oil And Became A Reference In Biofuels Worldwide.
The history of the Brazilian flex fuel car began in the 1970s when the world faced oil shocks and Brazil sought energy alternatives. It was in this context that the National Alcohol Program (Proálcool) was born, encouraging the use of ethanol as an alternative fuel to gasoline.
At the time, cars powered solely by alcohol emerged, but the instability of ethanol prices and the difficulty of refueling drove consumers away. The definitive solution only came decades later, with the creation of the flex fuel system, capable of running on both ethanol and gasoline—or any mixture of the two.
The Gol Total Flex And The Turnaround Of The Automotive Market
In 2003, Volkswagen launched the Gol 1.6 Total Flex, the first mass-produced Brazilian automobile with the technology.
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Hyundai launches a 7-seater “premium van” cheaper than Jeep Commander, Toyota SW4, and Chevrolet Trailblazer in Brazil; for around R$ 76,000 in conversion without taxes, Hyundai Alcazar features a turbo engine, diesel option, manual, automatic or DCT transmission, 6 airbags, and a family package that Brazilians don’t have yet, but India does.
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Cheap car, expensive repair: Renault Kwid 2020/2021 with 127,000 km requires a new engine costing R$ 11,500, and the final bill exceeds R$ 16,000.
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Renault 4 electric gets Plein Sud version with a fabric roof that opens 92 cm, starting at €37,290 and featuring 28 driving assistants in a nostalgic bid to drive in the open air without sacrificing interior space.
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Used Renault Logan surprises with its space, giant 510-liter trunk, and affordable maintenance.
The success was immediate: in a short time, all major automakers adopted the model in their production lines.
The advantage was clear: the driver could choose the cheapest fuel at the moment, balancing costs and maintaining mobility.
The flex fuel car became a shield against oil volatility and fluctuations in ethanol prices.
Flex Technology And The Impact On The Brazilian Fleet
Today, the flex fuel car represents over 80% of the national light fleet, becoming practically a Brazilian standard.
This dominance has transformed the country into a global reference in biofuels, placing sugarcane ethanol as a key player in the transportation sector.
Besides its flexibility, the technology has helped reduce external dependence on gasoline, brought environmental gains with lower CO₂ emissions, and boosted the entire sugarcane production chain, involving millions of workers and billions in exports.
Flex Cars Outside Brazil: Why It Didn’t Succeed
Despite its success in Brazil, flex fuel technology never consolidated in the international market. Some countries tested flex vehicles, such as the United States, Sweden, and Canada, but the model did not gain scale.
In the U.S., for example, flex cars managed to represent part of the fleet, but the low availability of stations with E85 (a mixture of 85% ethanol and gasoline) discouraged drivers.
In Europe, on the other hand, the high cost of ethanol compared to gasoline made the technology unfeasible.
In summary, economic and logistical factors prevented the flex car from becoming a global solution.
Advantages And Challenges Of Brazilian Ethanol As A Fuel
The success of the flex car in Brazil is directly linked to the abundance and competitiveness of sugarcane ethanol.
Unlike corn used in the U.S., sugarcane has high productivity, reduces costs, and makes the fuel more attractive for consumers.
On the other hand, the fluctuation of ethanol prices between harvest and off-harvest seasons, along with competition from subsidized gasoline at certain times, poses challenges to maintaining constant competitiveness.
Even so, flexibility continues to be seen as a unique asset for the Brazilian market.
The Future Of Flex Cars In The Era Of Electrification
With the rise of electric vehicles, the question arises: what will be the role of the flex car in Brazil? Experts argue that the technology will still have space for many years, especially in emerging markets where charging infrastructure is limited.
Additionally, the combination of hybrid engines with ethanol emerges as a promising alternative: vehicles that unite electrification and biofuel can be a transitional solution to reduce emissions without giving up existing logistics.
A Symbol Of National Innovation
The flex car is one of the greatest innovations of the Brazilian automotive industry. Created in response to energy vulnerability, it has become an absolute standard in the country and established Brazil as a leader in biofuels.
Even though it has failed to gain global scale, flex has become a symbol of national ingenuity, showing how Brazil can create solutions adapted to its energy reality.
More than just a technology, it is a reflection of the country’s ability to transform crises into innovation.
Pelo menos no meu caso não vejo vantagem em abastecer no etanol com a diferença de preço e a autonomia hoje a conta não fecha.
Faltou mencionar o louvável trabalho desenvolvido pelo Eng° Luc Henry De Ferran da Ford Brasil no desenvolvimento dos motores à álcool. Foi ganhador do premiação conferida pelo ITA por esta tecnologia pioneira.
qual o nome do inventor ?