Mazda 6 Service Manual: No.22 vibration concerns (engine)

No.21 engine noise

No.23 a/c does not work sufficiently

Other materials:

Mazda 6 Service Manual: Limitations to SRS Air Bag
In severe collisions such as those described previously in "SRS Air Bag Deployment Criteria", the applicable SRS air bag equipment will deploy. However, in some accidents, the equipment may not deploy depending on the type of collision and its severity. Limitations to front/near front collision ...

Mazda 6 Service Manual: Split Folding
By lowering the rear seatbacks the luggage compartment space can be expanded. WARNING Do not drive the vehicle with occupants on folded down seatbacks or in the luggage compartment.  Putting occupants in the luggage compartment is dangerous because seat belts cannot be fastened which coul ...