Mazda Protege owners have reported 2 problems related to differential unit (under the power train category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mazda Protege based on all problems reported for the Protege.
The 2003-2003. 5 Mazdaspeed Protege poorly designed limited-slip differential has seen a failure rate of over 125 documented cases online. When this part fails, the vehicle does not respond to acceleration causing a safety issue at highway speeds and residential speeds. When this part fails, it could cause the vehicle and passengers to be at risk for roadside rear end crashes due to loss of power especially if the driver is changing lanes at highway speed. This issue has been a widespread problem for this particular model and Mazda USA has denied any responsibility for issuing a recall. 2003-2003. 5 Mazdaspeed Protege owners have had the limited slip differential replaced only to find the issue re-appear and fail again. Here is a link to the documented list of owners who have had this fail. . Read more...
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all problems of the 2003 Mazda Protege
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On the 2003 and 2003. 5 Mazda Mazdaspeed Protege, of which only 4750 cars were produced. There have been at least 46 web documented failures of the differential breaking on these cars. The 47th known failure was recently my nephew. See link for a list of failures. . Read more...