Two problems related to emission control have been reported for the 2007 Mazda MAZDA3. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Mazda MAZDA3 based on all problems reported for the 2007 MAZDA3.
The contact owns a 2007 Mazda 3. On August 29, 2008, the power steering failed while making a right turn. The steering wheel became very difficult to turn and the vehicle had to be towed to the dealer. The dealer replaced the computer and the power steering pump. On March 27, 2009, the failure recurred while making a right turn. In addition, the power steering indicator illuminated. The vehicle was towed to the dealer again, where it has remained for the past two weeks. The dealer will replace the power steering parts for the second time; however, the contact does not feel comfortable driving the vehicle. He would like Mazda to purchase the vehicle back. The failure mileage was 32,500. Updated 05/07/09. The oxygen sensor was faulty. The dealer replaced the power steering pump and module assembly. The right front strut was replaced. Updated 05/07/09.
Oxygen sensor #2 had been cross-threaded into the exhaust manifold. Damage was done at the factory. Dealer refused to replace the part do to the fact that I had found the problem and not them.