Car can’t buy one during long waiting period

Processing your 1 year Temporary Resident visa takes 3 or 4 weeks, not months. Someone was misinforming you.

Where were you able to process it in 3-4 weeks? According to Mex Law and two blogs it said that the backlog in Playa Del Carmen took 5 months.

Hi, we did our's ( wife and I) on our own no help and took 2 weeks exactly in Nuevo Vallarta late August 2017.

You must be ready to go at INM early at opening time
You must have copies, pictures done in advance if possible
If I  recall properly 1st visit = payment, pictures (60 min.), 2nd visit = fingerprints, copies and signature (45 min.), 3rd visit = pickup residency cards
You also follow the status of your request via internet and emails
Usually the INM employees usually speak english in touristy destination but even better if you speak spanish.

Friends of us took the service of a middle man result = took >2 months

Adios y buen dia a todos, GyC.

I did it on my own with the back up of a bilingual friend. It took two months because we ran into the holidays. You are heading toward the holidays also.  The holidays can cause lots of problems and delays. Fortunately, I was finishing just before the long holiday run began.

That's fantastic news!! Many thanks for taking the time to fill me in with the details.

Hola!
I'm new to this site and left you a thank you message to reply to your comment but don't see it anymore. I am very hopeful now about the process and appreciate the time you spent replying. Gracias!

If you do the math it equals roughly 25 USD /day (1 USD =19 MXN) .    Four years ago, the last time I rented a car, it was 500 MXN/Day; the cheapest rate I could find for a small standard shift. The 9000 USD annual lease is equivalent to approximately 170,000 MXN. You can buy a decent automatic used vehicle,  including some SUVs. As an aside, in MX, new car dealerships do not take trade ins. So, no dealership used car lots.

The man referencing Nuevo Vallarta is lucky to have used that office.  It is a breeze.  However, I have experienced the office in Chapala.  It took months, no one spoke english (luckily i have spanish skills) the workers were not nice and the office is packed and hot.  Ditto Guadalajara.  Both may have changed now but just because it is easy one place it could be totally different.  If people have experienced 5 month waits in Playa del Carmen then that is probably what it is like.