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EnginePart report

2003 Mazda MAZDA6 Engine Problems

Complaints
10about this part
Share
6%of 174 total for the year
Median mileage
107,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 10 complaints about the engine of the 2003 Mazda MAZDA6, 6% of the 174 complaints for this model year. Where a mileage was given, the median is 107,000 miles. 1 a fire, according to the filers.

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.

“Bought a 2003 Mazda 6 last year, my tachometer kept going crazy and the car would die out. I took it to good year, 3 codes came up. They changed the cam shaft sensor and the EGR valve. That didn't fix the problem, good year took the parts out, put mine back in and told me to take it to a Mazda dealership. I took it to Mazda, they told me I had to change my PCM because it was shorting out, and my EGR valve and that should take care of the problem. They quoted me 2k dollars for everything. …”

NHTSA complaint #10671839, filed 2015-01, 87,200 miles

“I started hearing a knocking/ticking noise from the top of the engine. I took it to the auto workshop I was told I will have to change my car engine when the engine has not even get to 100,000 mile.”

NHTSA complaint #10744673, filed 2015-07, 80,010 miles

“While driving home the car seemed to have lost all power, but was still running. I was able to coast to my house but then tried to stop and the car surged. I had to pull the emergency brake to stop. I was quite shaken at that point. The engine light came on. I was able to drive it back to town to have the car checked, no error codes showed up on the computer. The engine light did go off, the car ran fine for about 3 months then proceeded to do the same thing. The car lost power but I was able to coast to my place of work. …”

NHTSA complaint #10557598, filed 2013-12, 155,000 miles

“I purchased a 2003 Mazda 6 about a month ago, and I have had the hard shifting problems and the temp gauge going up to high all the time and floating back down. I was not informed of this and other recalls of this model and I have been denied to get the problem fixed. The dealer where I bought it said they flashed it a couple times but it is not stated o n my repair receipt. I feel that I am driving a dangerous car and something needs to be done!!!! I am not going to keep driving this car and I feel I can take it back because my first payment is not due yet. …”

NHTSA complaint #10546259, filed 2013-09, 96,332 miles

“Was at a stop sign to make a left turn half way thru the car stalled and all lights came on, vehicle behind me almost ran into us. Barely got pulled over to the side of the road had to turn car off and then back on the check engine light remained on but vehicle would drive, after about 5 starts the light came off had the car checked, was told it was the throttle body. …”

NHTSA complaint #10587693, filed 2014-05, 107,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
20211376%
2019117%
20183255%
201747%
201679%
201547%
20141511%
201222%
201132%
201042%
2009113%
200822%
200796%
2006106%
200543%
200474%
2003106%

Other parts of the 2003 Mazda MAZDA6

Engine cooling
36 complaints
Transmission and drivetrain
36 complaints
Air bags
30 complaints
Brakes
24 complaints
Electrical system
18 complaints
Vehicle speed control
18 complaints
Fuel system
15 complaints
Body and structure
11 complaints
Suspension
9 complaints
Steering
7 complaints
Equipment
4 complaints
Other or unknown
4 complaints

← All problems reported for the 2003 Mazda MAZDA6

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 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