How to Monitor Your Fuel Economy in Real Time

Tinkering with new mpg monitoring gadgets (not the “mega-efficient” gas savers he’s debunked time and again), PM’s senior auto editor reminds us of maybe the most obvious—if overlooked—advice when it comes to today’s hell at the pump: Believe you can save gas, and you will. Pick up a cheap toy for the garage, change your driving habits, and you’ll see more efficiency on your very next trip….