Sorry to hear that! Unfortunately, replacing a 2014 Acura MDX’s catalytic converter isn’t exactly cheap, with the average cost falling somewhere between $1,600 and $1,700. The exact cost will largely depend on the parts themselves and the automotive shop you go to for the replacement service.
Depending on the mechanic you go to and the length of time it takes them to perform the replacement, expect to pay between $250 and $350 in labor costs—most professionals are able to replace a catalytic converter in under an hour, but some vehicles are more challenging than others.