Anyone found one that works? It's a pain in the @&**(& to buckle my kid in to his child seat because that inside buckle is so low down.

 

Did you ask the mazda dealer. By law the must provide a seat belt extender for large people, not sure if they have one that would work for the rear seat. I have the same problem with my son in his booster seat. He can not put it on so i have to squeze my hands in there.

 

Same problem here. Did a little Googling but nothing seemed ideal for the 8 rear seats. I'll ask a dealer.