1998 Mazda Millenia problems & reliability
29 owner complaints filed with NHTSA for the 1998 Mazda Millenia. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
2 complaints report injuries (2 injured).
Federal crash records (FARS 2020–2023): 1998 Mazda Millenia vehicles were involved in 1 fatal crash with 2 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Engine and Engine Cooling | 5 | 17% |
| Power Train | 5 | 17% |
| Fuel System, Gasoline | 4 | 14% |
| Vehicle Speed Control | 4 | 14% |
| Air Bags | 2 | 7% |
| Electrical System | 2 | 7% |
| Service Brakes, Hydraulic | 2 | 7% |
| Structure | 2 | 7% |
| Wheels | 2 | 7% |
| Engine | 1 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Complaints by incident year
What owners report
“I fully purchased my car on 02/28/2019 with "auto landmark". That same day I paid a $200-300 service fee for registeration and title, I paid full car tax on the car. I call in regards to my car and if the mechanic it's not calling out, he's on vacation. It's been over a month and still no results. They just need to…”
Engine · filed May 27, 2019
“Tl*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…”
Engine and Engine Cooling · filed May 4, 2009
“Tl* the contact owns a 1998 mazda millenia. The contact stated that the keyless entry failed frequently. The contact had to replace the keyless entry key twice. Also, the contact lost the key due to the frequent failures. *ak”
Equipment · filed Mar 6, 2007
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
89 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 1998 Mazda Millenia. The 10 most recent:
In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer.
09-024-22 · Service Bulletin/Repair Instructions · issued Jul 18, 2022
This service bulletin provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost…
01-006-22 · Service Bulletin/Repair Instructions · issued Jun 22, 2022
Accessory instructions can be found on OneMazda under Dealer Resources - Parts & Accessories.
SA-014-22 · Service Bulletin/Repair Instructions · issued Mar 29, 2022
The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this…
01-003/22 · Service Bulletin/Repair Instructions · issued Mar 17, 2022
Radio Unlocking Codes.
MT-002-22 · Service Bulletin/Repair Instructions · issued Feb 24, 2022
Battery Maintenance: This service bulletin provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery…
01-006-21-3779b · Service Bulletin/Repair Instructions · issued Dec 21, 2021
Automatic Transmission/Transaxle Cooler and Lines Flushing Procedure: Automatic Transaxle/Transmission (A/T) oil cooler and lines must be power flushed completely before an overhauled or replacement A/T is installed…
05-002-21-3854 · Service Bulletin/Repair Instructions · issued Dec 8, 2021
This service bulletin provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost…
01-006-21-3779a · Service Bulletin/Repair Instructions · issued Aug 24, 2021
This service bulletin provides information regarding the proper use of the driverâ  s floor mat to avoid any potential interference with the foot pedals. The following are possible causes of floor mat interference…
09-025-21-3824 · Service Bulletin/Repair Instructions · issued Aug 17, 2021
Accessory instructions can be found on OneMazda under Dealer Resources - Parts & Accessories. The links provided below can be used for quick access: For 2016 models and newer: NOTE: Instructions are found under the…
SA-041-21 · Service Bulletin/Repair Instructions · issued Jun 9, 2021
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
No NHTSA recall campaigns name the 1998 Mazda Millenia in our current data. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 1998 Mazda Millenia?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.