Fuelly just had a major "behind the scenes" update. If you notice anything not working correctly let us know in our support forums here.
There are 0 Mercury Marquiss with reported gas mileage parked at Fuelly.
[hide zero MPG]
Buy the proper octane for your vehicle
Contrary to popular belief more octane doesn't make your eng... ...
Read more tips
© 2014 Fuelly.com - All Rights Reserved.
A simple & effecive way to track fuel consumption
Easy to understand the real cost of your vehicle