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.

CarComplaints.com 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.

10.0

really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
40,994 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 engine problems

engine problem

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2007 Mazda MAZDA3 Owner Comments

problem #5

Jul 012012

MAZDA3

  • miles

A D V E R T I S E M E N T S

The contact owns a 2007 Mazda Mazda 3. the contact stated that after decelerating to a stop, the vehicle would lunge forward abnormally and the check engine light illuminated immediately after the failure. The vehicle was not taken to a dealer or an independent mechanic. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was unknown. The current mileage was approximately 93,000. The VIN was unavailable.

- Hughesville, PA, USA

problem #4

Jan 092012

MAZDA3 4-cyl

  • 103,800 miles
Accelerator pedal stuck after engaging it to merge onto freeway. Cruise control was not on. Brakes barely slowed acceleration. Threw vehicle into neutral to stop acceleration. When vehicle put back in drive, pedal and accelerator functioned normally. When taken in to mechanic, found to be functioning normally.

- Harker Heights, TX, USA

problem #3

Apr 132011

MAZDA3

  • 25,000 miles
The contact owns a 2007 Mazda 3. the contact stated that when trying to decelerate and park, the vehicle suddenly accelerated forward and crashed into a wall. No one was injured. The police were not notified. The vehicle was towed to a dealer who had not completed the diagnostic test when the complaint was filed. The failure and current mileages were approximately 25,000. The VIN was unavailable.

- Bethesda, MD, USA

problem #2

Jan 302011

MAZDA3 4-cyl

  • Manual transmission
  • 76,170 miles
The contact owns a 2007 Mazda, Mazda3. While driving approximately 35 mph, the vehicle began to suddenly accelerate. When the contact disengaged the clutch, the engine rpms fluctuated between 6,800 and 7,300. The vehicle was driven to the side of the road, the engine was turned off and restarted twice before resuming normally. The vehicle was not diagnosed or repaired. The failure mileage was approximately 76,170. Updated 03/02/11 updated 03/08/11

- Baldwin, NY, USA

problem #1

Feb 192007

MAZDA3 4-cyl

  • Automatic transmission
  • miles
On 2/08/2007 my newly purchased Mazda 3 was running for 45 minutes at 40 miles per hour and the engine raced. On 2/16/2007, the engine raced again and the car switched from first gear to 5th gear in 1 second while the engine raced. On 2/19/2007, the brakes failed to stop, narrowly avoiding an accident while the engine raced. The car was put in park and the engine raced again. Earlier that same day, the car changed from first gear to fifth gear and then to second gear while making a clicking sound. When it was checked out by the Mazda dealership, they said there was nothing wrong with the car. This car could have caused a horrific accident and still could.

- Stow , OH, USA

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