You’d have to read all the rsa and Mb T&C to be sure, from what i can see in them after having a quick look. it don’t mention speakers specfically but it does say this “other audio equipment” so i guess that would cover speakers etc.
It’s not something i had even considered doing so had a look..
“The equipment must be permanently fitted in the vehicle or alternative vechicle and must have been supplied with it as standard by the manufacturer or dealer”
I do think as we don’t own the car any work would have to be done by an authorised specialist as well.. if permission was given by MB. After all any of our personal stuff left in the car is not covered either..
Say you did own the car, the audio stuff would most likely be insured upto a certain amount not the actual equpiment in it and so would be our personal stuff, In most cases anyway.
You’d only have to inform them if it went over that amount..
But as it somone else’s asset at the end of the day the insurance terms are to cover them as well and are not standard ones. Personally i’d say call and ask what the situation is before to cover yourself.
I know it’s only speakers or only an illegal hack to the system that some do but if that’s not authorsied and were they to findout it could cause problems and they would charge you to have it put right by an authorised specialist.
Not what you want to hear i know but thats the reality of leasing a car. I guess..