1999 Mazda Millenia Electrical system Problems
- Complaints
- 5about this part
- Share
- 19%of 27 total for the year
- Median mileage
- 60,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the electrical system of the 1999 Mazda Millenia, 19% of the 27 complaints for this model year. Where a mileage was given, the median is 60,000 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.
“I bought my car in nov 2002, at 60,000 miles. The check engine light continually stays on. The car runs rough and has poor accerlation. We have it in the shop 4 times, and thats only for this year. We've replaced 3 o2 sensors, the air induction hose. The servicer has also cleaned the EGR valve port. The check engine light will stay off for 2 or 3 weeks and then it's on again. I'm very unsatisfied with Mazda.”
NHTSA complaint #10066557, filed 2004-04, 60,000 miles“I currently own a 1999 madza Millenia, which I purchased pre-owned, in 2002. I have had nothing but problems and extremely expensive repair bills since that time. The car breaks down/is in need of repair every 3-4 months, and it is always the same major problem with 2-5 new things needing to be repaired as well. My latest repair bill, (2) weeks ago, was to the tune of $1280. 80. The check engine came on in october 2003 and has not went off since that time. …”
NHTSA complaint #10168597, filed 2006-09, 3,300 miles“Engine light came on again. Computer indicates knock senor, but no engine problem. Light came on after we began using 87 octane instead of mid or premium grade. Was advised it is a bad knock sensor and there is a TSB and repair kit to fix problem. Mazda has apparently changed the knock sensor (due to ongoing problems).”
NHTSA complaint #10147218, filed 2006-01, 60,000 milesRelated service bulletins
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Electrical system: other model years
Other parts of the 1999 Mazda Millenia
5 complaintsTires
5 complaintsTransmission and drivetrain
5 complaintsOther or unknown
3 complaintsAir bags
2 complaintsBrakes
2 complaintsBody and structure
2 complaintsVehicle speed control
2 complaintsEquipment
1 complaintsLatches, locks and linkages
1 complaintsWheels
1 complaints
← All problems reported for the 1999 Mazda Millenia
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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