Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety. Notes: Except for a minor issue with cracked motor mounts, the 2007 MAZDA3 is a fantastic vehicle with a great reputation.

If you need to replace the motor mounts, first ask your dealer if they'll cover it -- the motor mounts were dealt with in a TSB & were recalled for some model years. Otherwise buy aftermarket motor mounts -- owners report this solves the problem. If you use the same OEM parts, they may just crack again.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
71,500 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 Mazda MAZDA3 fuel system problems

fuel system problem

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2007 Mazda MAZDA3 Owner Comments

problem #4

Aug 052016


  • 83,000 miles


On 8/5/16 the vehicle was bought into a Mazda dealer for a gasoline odor & engine code # PO455. It was determined that a split fuel pump retaining allowed the fuel pump to separate from the fuel tank causing gasoline to leak. Fortunately the vehicle did not catch on fire. Thank goodness. I may not have had a son today. The repair came to over $500. Mazda does not feel obligated to cover the full cost. In my opinion this is not a maintenance item but a definite safety defect.

- Boca Raton, FL, USA

problem #3

Aug 202010


  • miles
Vehicle was traveling along on 30 mph road with 'stop' sign ahead. As vehicle slowed down to about 15 mph, transmission started to shake, several warning lights came on and off, including oil and power steering, RPM fell very close to 0 (zero) and car died. Vehicle was able to stop at the 'stop' sign. Even though the vehicle was still on, any pressure on the gas pedal did not provide power or input to the transmission, now in 1st gear, to move the car. Car needed to be completely turned off and then turned on before it could move again. This issue has been ongoing for 4 years regardless of speed. The car has also decided to stop providing power while in motion while in moving traffic or on the highway, which could have resulted in multiple car crashes or worse. Mazda refuses to acknowledge that anything is wrong with the car since they "cannot replicate the problem". this issue is sporadic and occurs regardless of speed (usually around 30 mpg or less), weather, distance traveled, amount of time car has been in consistent use, etc. Mazda has even hooked this car up to their computer system and no error code has been found. This issue has been extensively documented with our local Mazda dealer and paperwork is available for review. This car has been a true lemon since we bought it. It only has roughly 55K miles on it.

- Middle Village, NY, USA

problem #2

Mar 032014


  • 95,000 miles
The check engine light came on. Cause, after running code check, P2004. Runner control vale stuck. Replace solenoid. Front struts gone.

- Boca Raton, FL, USA

problem #1

Jun 262013


  • 108,000 miles
The contact owns a 2007 Mazda Mazda3. The contact stated that while driving 55 mph, the steering wheel became difficult to maneuver. In addition, the vehicle began stuttering and misfiring. The vehicle was towed to an independent mechanic for diagnosis and the contact was informed that the fuel pump would need to be replaced. The manufacturer was notified of the failure. The vehicle had not been replaced. The failure and current mileage was 108,000.

- Lynchburg, VA, USA

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