dealer said have to replace the whole thing. no repairThat is sad. Sorry to see it. MB tans for durability more than comfort. Our seats are holding up even though we take our dog on trips.
Do you wear suspenders or sharp edged jewelry that could cause a tear? Transport dogs or cats? This doesn't look like normal wear and tear.
I've used super glue and vinyl repair kits in the past, but I don't know how well they would work on the MB material. I'd talk to the dealer service advisor before doing anything.