See also:

Engine Compartment Overview
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Trailer Towing
The Mazda3 is not designed for towing. Never tow a trailer with your Mazda3. ...

Tiedown Hook
CAUTION: Don't use the tiedown hook under the rear for towing. It is designed ONLY for tying down the vehicle when it's being transported. Using it for towing will damage the bumper. Tiedown Ho ...