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Fuel systemPart report

1999 Mercury Mystique Fuel system Problems

Complaints
7about this part
Share
5%of 128 total for the year
Median mileage
69,450miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the fuel system of the 1999 Mercury Mystique, 5% of the 128 complaints for this model year. Where a mileage was given, the median is 69,450 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“1999 Mercury Mystique, second owner, purchased is 2005. The gas line freezes when the temperature reaches below 20 degrees. The tank is half full, treated for winter weather and it still freezes. This is not normal: I've owned 2 other vehicles (ford tempo/dodge stratus) never happened. I've missed work due to this gas line freeze and am the only resident in my neighborhood that is having this problem. It has to be a manufacture defect or the gas tank is not protected. This is the second winter season this has happened.”

NHTSA complaint #10255408, filed 2009-01, 70,000 miles

“On monday, august 8th, 2005 in the morning I drove the car to work with my wife in the passenger seat. On our way filled the gas tank at esso station at 7:30 a.m. Shortly after driving the car out of the gas station I heard two loud bangs in quick succession followed by a rough sound which sounded like the car was dragging a piece of metal on the road. Stopped the car on the shoulder and had the inspiration to look under it. I saw two pieces of what looked like putrid steel straps hanging from under the gas tank and touching the pavement. …”

NHTSA complaint #10142865, filed 2005-11, 146,000 miles

“I recently bought a 1999 Mercury Mystique. At 68,900 miles the fuel pump on the car failed. I was in the process of getting it fixed and my mechanic showed me the old fuel pump after he'd removed it from the car. The ground wire was basically fused to the side of the plastic which my mechanic assured me should not be the case. I was told that it could have caused an explosion at any time. I will be lodging a formal complaint with the ford/Mercury company as well but I thought that anyone else who owns a car of this type should know about this danger as well.”

NHTSA complaint #10065977, filed 2004-04, 68,900 miles

“I had a strap that had rusted underneath my car. A 1999 Mercury Mystique 2.0, so I took it to the mechanic. He indicated that my gas tank strap rusted through and that the other one was about to fail as well. He told me that this is a definite hazard and could have proved to be dangerous if I did not take care of it. He also said that there should have been a recall regarding this problem.”

NHTSA complaint #10188733, filed 2007-04

“There is a constant gas smell during the winter time. The smell is worse right after filling the car with gasoline and anytime the car is started more than one time such as needed to take care of errands. The smell is so bad at times I am afraid to leave the car close to the house. I have reported this many times and the fuel pump was supposedly checked and the fuel filter replaced at one point. Gasoline has leaked at times from behind the passenger side front wheel. This happens during the winter months for the most part.”

NHTSA complaint #740208, filed 2001-01

Fuel system: other model years

YearComplaintsShare of year
2000711%
199975%
199894%
1996148%
1995319%

Other parts of the 1999 Mercury Mystique

Body and structure
28 complaints
Brakes
21 complaints
Other or unknown
19 complaints
Engine cooling
15 complaints
Electrical system
14 complaints
Visibility (wipers, defrost, mirrors)
14 complaints
Air bags
6 complaints
Equipment
6 complaints
Suspension
6 complaints
Steering
5 complaints
Vehicle speed control
5 complaints
Transmission and drivetrain
4 complaints

← All problems reported for the 1999 Mercury Mystique

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology