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Fuel systemPart report

1998 Mazda Millenia Fuel system Problems

Complaints
4about this part
Share
14%of 29 total for the year
Median mileage
87,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the fuel system of the 1998 Mazda Millenia, 14% of the 29 complaints for this model year. Where a mileage was given, the median is 87,000 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.

“Owner complained about a fuel tank problem. Owner took the vehicle back to the dealer, and informed the owner that the fuel tank needed to replaced. The technician determined that the vehicle needed to have the fuel tank replaced because the gas tank collapsed. The problem was with, the fuel tank, 2 sending units and the fuel canister.”

NHTSA complaint #10111214, filed 2005-03, 76,500 miles

“While enging is running whether parked or driving there is a very strong fuel odor - 1. Standing outside the vehicle particularly at the front of the vehicle and 2. Inside the passenger compartment, this makes it impossible to drive without opening windows. Vehicle also has very poor gas mileage, mechanic discoverd failed fuel line connector and is in process of replacing part, the replaced part will be saved and will be available, other such failures have been found on other Mazda vehicles like the tribute.”

NHTSA complaint #10100843, filed 2004-12, 87,000 miles

“The contact owns a 1998 Mazda Millenia. While driving 55 MPH on the freeway, the vehicle suddenly decelerated to 40 MPH. Approximately five minutes later, while driving 65 MPH, the vehicle decelerated to 40 MPH accompanied by a loud noise from the engine. The contact quickly took the vehicle to a repair shop. The mechanic could not duplicate the deceleration failure, but he was able to hear the noise. Since the summer of 2008, the contact has spent $7,000 at two dealers. The vehicle has also been serviced at pep boys. In addition, the cylinders misfire. …”

NHTSA complaint #10267670, filed 2009-05, 200,000 miles

“While driving at speeds above 55 MPH get strong fuel odor inside carwhich makes passangers and driver roll down windows to get fresh air because fuel smell”

NHTSA complaint #729475, filed 2000-08

Fuel system: other model years

YearComplaintsShare of year
200113%
2000316%
1998414%
1997213%
199522%

Other parts of the 1998 Mazda Millenia

Engine cooling
5 complaints
Transmission and drivetrain
5 complaints
Vehicle speed control
4 complaints
Air bags
2 complaints
Brakes
2 complaints
Electrical system
2 complaints
Body and structure
2 complaints
Wheels
2 complaints
Engine
1 complaints
Equipment
1 complaints
Latches, locks and linkages
1 complaints
Seats
1 complaints

← All problems reported for the 1998 Mazda Millenia

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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