The political turmoil in the United Kingdom has left Formula 1 teams plenty to be worried about apart from getting the fastest car on the grid this season. The Brexit deal negotiated by UK Prime Minister Theresa May was rejected by MPs earlier this week by 230 votes, the largest defeat suffered by a government in the House of Commons in history.Consequently, Britain could leave the European Union (EU) on March 29, 2019, without a deal, which would mean the collapse of the single market as there will be no agreed customs or trade arrangement with European nations."Every day that passes without this issue being resolved means more uncertainty, more bitterness and more rancour" - UK PM Theresa May reacts to huge government loss in #BrexitVoteLatest: https://t.co/JXfWlrcIzk pic.twitter.com/V5uXaFQITg— BBC Breaking News (@BBCBreaking) January 15, 2019Prior to the Commons vote, representatives from three F1 teams spoke with the head of Britain's racing authority - Motorsport UK chairman David Richards and shared their concern of a no-deal Brexit. Richards believes that the impending exit threatens the viability of teams having major bases in the UK, which has traditionally been an F1 bulwark and a stronghold. “Something we should be so proud of is the top F1 teams and world champions based here [UK] And we’re going to make their lives difficult. We’ve got to make sure that doesn’t happen.”Brexit is a challenge with regards to finance, immigration, and legacy of the sport in Britain. Here's how:#3 Financial implications of BrexitMercedes races under German license but based in BrackleyFormula 1 is a billion-dollar sport which supports a million dollar ancillary industry. One of the key financial implications could well be a deficit in the amount of money that the sport generates for the British economy.The Mercedes winning Formula 1 team and their engine manufacturing division is based in the Brackley and contributed over £111 million in 2017 to the economy through the production of the current V6 turbo engines.Williams could earlier purchase their Mercedes engines at a preferential rate and opt-in buying in pounds or euros. Post the Brexit, it will have to be just the pound. If the sport reduces its presence because of untenable finances, the economy built around F1 will bleed more.