According to the manifesto, the plan would include a diesel scrappage scheme and ban on the sale of diesel cars and small vans in the United Kingdom by 2025.
The Lib Dems pledge to hold a referendum on the final Brexit deal following two years of negotiations between London and Brussels.
Britain's centrist Liberal Democrats launched their party manifesto with an European Union flag Wednesday (17 May) and a promise to hold a Brexit referendum, as they seek to win pro-Europe votes in next month's national election. That they will be safer and better off.
Alun Griffiths, a councillor and the party's Parliamentary candidate for Bradford West, also described the Liberal Democrats' pledge to legalise cannabis as "a sensible, straightforward thing to do".
Farron said: "You don't have to accept Theresa May and Nigel Farage's extreme version of Brexit that will wreck the future for you, your family, your schools and hospitals".
While majoring on plans to fight hard Brexit, the Lib Dem manifesto also set out a package of more than £13 billion of tax rises to fund public services, including a penny on every income tax band and a rise to 20% for corporation tax.
Other key pledges include reducing the voting age to 16, offering sanctuary to 50,000 Syrian refugees, building 300,000 homes a year and scrapping the Tories' grammar school expansion plans. "This election is your opportunity to change Britain's future - by changing the opposition".
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A minimum unit price for alcohol would also be introduced (subject to the ongoing legal challenge to the policy in Scotland), whilst the free school meals scheme will be extended to all children in primary education.
Paul Johnson, director of economic think tank the Institute for Fiscal Studies, said the Lib Dem tax proposals were "much more modest" than those unveiled by Labour on Tuesday, and would involve Mr Farron's party "increasing spending more than they're going to increase taxes".
He told ITV News: "We are heading towards a future of a very uncompromising approach to Brexit that 75% of young people didn't want".
The tactic has won the backing of Nicole Verat-Pant, a French citizen who can not vote in the upcoming election but whose husband will vote for the Lib Dems.
Labour says it would hit the top 5% of earners - those on more than £80,000 - with an income tax increase.
Elsewhere on the general election campaign trail, Scottish Conservative leader Ruth Davidson visited a nursery school to highlight fresh efforts to boost literacy and numeracy standards.
But Mr Farron will rule out any repeat of the coalition government that ran Britain from 2010 to 2015, when the Lib Dems joined forces with the Tories - saying he will refuse to go into coalition either with Theresa May's Conservatives or Jeremy Corbyn's Labour Party. Its official manifesto launch will take place later on Wednesday.