Woman reveals how to slash fuel consumption by 12 per cent with just one click of a button

A woman has shared a simple way to reduce your fuel consumption by up to 12 per cent with just one click of a button.

TikTok user Megan's Bubble went viral for posting her clever money-saving car hacks on his social media account.

Now she has shared her latest tip, which involves another button in the car many drivers may not understand.