Hi everyone I'm a new member, I recently bought a 2015 Mazda 6, my challenge is with locks as I find this to be a big security issue, when you unlock drivers door it unlocks all other doors, why is this the case?

Boot why when you are inside the car the boot is always unlock? Anyone can open the boot while you are inside the car? Please help maybe I'm doing something wrong

 

If the engine is running, & the vehicle is in gear &/or handbrake is off, the boot cannot be opened.