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EnginePart report

2005 Mazda MAZDA6 Engine Problems

Complaints
4about this part
Share
3%of 147 total for the year
Median mileage
142,070miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 4 complaints about the engine of the 2005 Mazda MAZDA6, 3% of the 147 complaints for this model year. Where a mileage was given, the median is 142,070 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 was driving home from work today. I was driving on a road not far from my home and going about 40 MPH. My foot was not on the gas but the car began to suddenly accelerate. It suddenly accelerated to over 50 MPH. I began to brake, but it felt like I was trying to brake at the same time someone was pressing hard on the gas pedal. I put the car in neutral and pressed the brake as hard as I could. It was a definite hard push on the brake -- as if I had lost power brakes. There were cars ahead of me stopped in the road because of an accident. I managed to stop -- but barely. …”

NHTSA complaint #10542187, filed 2013-09, 165,000 miles

“The contact owns a 2005 Mazda 6. While driving various speeds, the vehicle stalled and the check engine warning indicator illuminated. The vehicle was diagnosed and repaired by an independent mechanic. The throttle body and accelerator pedal were repaired, but the failure continued. The manufacturer and dealer were not made aware of the failure. The failure mileage was 170,000.”

NHTSA complaint #11210727, filed 2019-05, 170,000 miles

“The contact owns a 2005 Mazda MAZDA6. The contact stated that while the vehicle was being operated, a loud noise emitted from the engine. Upon inspection, the contact discovered oil under the engine and oil coming from the exhaust. The cause of the failure was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was 110,000. The VIN was not available.”

NHTSA complaint #10819819, filed 2016-01, 110,000 miles

“The contact owns a 2005 Mazda 6. The contact stated that the check engine warning indicator illuminated. The contact stated that the failure did not occur until it was repaired per NHTSA campaign number: 15v382000 (air bags). The vehicle was taken to an independent mechanic who diagnosed that the dealer had reset the sensor and the check engine indicator was turned off. The manufacturer was not notified. The failure mileage was approximately 119,141.”

NHTSA complaint #10972370, filed 2017-04, 119,141 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 2005 Mazda MAZDA6

Air bags
76 complaints
Transmission and drivetrain
19 complaints
Electrical system
13 complaints
Engine cooling
11 complaints
Exterior lighting
7 complaints
Vehicle speed control
7 complaints
Brakes
6 complaints
Other or unknown
6 complaints
Body and structure
5 complaints
Visibility (wipers, defrost, mirrors)
5 complaints
Suspension
4 complaints
Tires
4 complaints

← All problems reported for the 2005 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