Ford Flex fuel gauge problems

Filed Apr 29, 2026 · Electrical · FL

Along with problems from the current recalls (that still don't have remedies), our 2019 Ford Flex also has a faulty gas gauge. Not sure what component it would be considered, but even when we fill the tank up with gas, it doesn't register properly how much gas we have in the tank. It shouldn't be a guessing game as to how much gas is in the vehicle. I used to love Fords, but the combination of safety issues is concerning.

Filed Dec 9, 2019 · Fuel system · 108,000 miles · IA

The car's fuel gauge will suddenly drop to empty and the car will run out of fuel. By doing some research this is a very common problem with ford flex and it is very dangerous. This has happened multiple times and the most recent was this weekend when my wife was driving on the interstate and it died in traffic. Very dangerous

Filed Mar 4, 2019 · Fuel system · 112,000 miles · IA

Fuel gauge reading drops suddenly from 1/4 tank to empty in a matter of seconds, not allowing time to get out of traffic. Happened numerous times but so far only when the vehicle has been in a position to pull off the road (on single lane roadway, or in the right hand lane. Has beed at highway speeds, and on residential area.

Filed Dec 10, 2018 · Fuel system · 160,000 miles · IL

The fuel gauge will read between 1/2 and 1/4 tank then immediately make a *ding* and the display reads 0 miles. The fuel gauge will drop to empty. If you drive anything further than a short distance (10 miles or so) the car will die. It is "out" of fuel. Refilling the tank you will find that the vehicle still has whatever fuel the gauge was showing before it dropped to zero. It is consistent, it does this every tank. Appears to be getting worse as time goes on.

Filed Jun 20, 2018 · Fuel system · 60,800 miles · TN

As has been reported many time on here and in the flex forums, the vehicle will suddenly stall at a 1/4 tank of gas for no reason. I was traveling down the interstate at high way speed when the fuel gauge dropped to e and the miles to empty read 0. This has happened three times. I called one of my local dealers who insisted they have never heard of this problem and nothing was done. There advice was to not let the car get to a 1/4 of a tank. They have no fix for this dangerous problem.

Filed Aug 23, 2017 · Fuel system · 94,660 miles · CA

Driving on highway and had 1/4 tank of fuel left when low fuel warning beep sounded. Fuel gauge was suddenly at "e" and display said 0 miles until empty. Immediately pulled into a gas station. Gas pump shut off after filling only 14.5 gallons, although tank capacity is 18.6 gallons.

Filed Jan 13, 2017 · Electrical, Fuel system · 95,000 miles · MI

Tl* the contact owns a 2010 ford flex. While driving at any speed, the vehicle shut down abruptly and all of the instrument panel gauges failed. The vehicle ran out of fuel without warning. The contact stated that the fuel gauge displayed 62 miles before empty prior to the failure. The issue occurred numerous times. The manufacturer was notified. The vehicle was not repaired. The VIN was unknown. The approximate failure mileage was 95,000.

Filed Sep 19, 2016 · Fuel system · 50,000 miles · KS

Vehicle does not recognize last quarter tank of fuel. Once it reaches approximately a quarter tank left, the fuel gauge and miles to empty display drop suddenly to empty and the car shuts off. When refueling after it shows empty, it only accepts about 3/4 tank. The fuel is there, but inaccessible. This is a major safety issue as the car dies very suddenly when the system decides there's no fuel left. It has happened on the interstate, other highways, and on a rural road where finding enough fuel to get going again was a big problem. Dealership replaced fuel sensors, but said there was no code showing while the car was still under warranty. Now I'm stuck randomly replacing fuel system pieces in hopes of figuring out which piece is broken. Each time I spend hundreds of dollars to "fix" it, the problem repeats as soon as I get through most of the first tank of fuel. Position of vehicle doesn't matter. Uphill, downhill, etc, it always happens close to a quarter tank of fuel left.

Filed Aug 19, 2016 · Fuel system · 42,000 miles · SC

Fuel gauge will only register 1/2 full max. When tank is full and key turned on the gauge will initially go to full, then quickly fall to 1/2 with a corresponding distance to empty reading.

Filed Aug 18, 2016 · Fuel system · 65,000 miles · MO

Fuel level will suddenly drop from 1/4 tank to empty within a matter of seconds. The display will show approximately 65 miles to empty, less than a minute later it will display give a low fuel error and the vehicle will shut off while driving. Sometimes you can wait 20 minutes , turn the key on and it will again show 1/4 tank of fuel. Whether or not it then displays 1/4 tank of fuel, if you take the vehicle to a gas station to fill up it will only accept 12-14 gallons. The vehicle has an 18 gallon fuel tank. It appears as though the vehicle thinks it suddenly running out of fuel despite there being another 4-6 gallons of fuel in the tank.