Gabe Green
New member
I have a Mazda 3 Hatchback 2010 and used to get 280 miles to the tank city. Now I only get 240 in the city and I want to know why my mileage has gone down so much. I believe my tank holds 13 gallons with 21/29 to the gallon. I've been doing tests like driving as efficient as I possibly can by keeping the RPM down and I've driven like I used to when I first got the car. But the highest I've gotten is 260. Does anyone have any suggestions? Thanks!