Co-signing question

[BeeH11]

Hi!
There is a very high chance My vehicle is going to be brought back so in the event that it does, I will need a new one (eventually).
My husband and I are in a dilemma & not sure of what the best route is. I have higher scores than him right now (mine around 790 and his around 700). According to his free credit watch report things on his credit cards, the reason his score dropped so much in the last year/year and a half was because he now only has credit cards (lack of types of credit). We don't have a mortgage and my car loan is only in my name. I have a variety of credit types (credit cards, auto loan, student loans, paid off personal loan).
Anyway, he wants the next auto loan to be in his name so his score will get boosted up but he's not in the top tier anymore so we were thinking I should co-sign to try to get the top tier rates. Does this work?
We will get the replacement car before We give up my car b/c we cannot have only 1 vehicle. However, I really doubt I could get approved for another auto loan w/ my current auto loan on just my income. My husband makes almost 2.5x more than me (he has the income and I have the credit score).
Anyway, should we co-sign to get the best rate? Would that even work? How does it work? Normally, neither one of us would ever co-sign on another person's auto loan but our $ is all together and we are looking to buy a home in a year or so and want both our scores to be top tier so that's why we are toying with the idea or co-signing on this.
FYI, not sure if you need this to answer my question/give advise but neither of us have any baddies/lates/etc...His income or both of ours wouldn't be a problem getting an auto loan but as I said above, I'm not sure just my income would get approved under just my name w/ my current auto loan too.
Thank you for your time and any input you can give!

[jeffm4688]

you mention your credit tracker shows he has a 700 and you a 790.. what are you using to see this? It's also quite possible if he has paid off installment loans of any sort on his report to have an auto score which is higher than his normal score.

It's very possible he could receive top tier financing on his own depending on lease/purchase and other things. Especially if he has at least some history.

As far as co-signing is concerned. Usually there is a primary/secondary co-signer. Both incomes and scores are factored in and the lease/purchase should show up on both of your reports. I don't see why top-tier is not achievable on his own so it should definitely be achievable together if truly needed in my opinion anyway.

[BeeH11]

Thanks for your response! His score is from BoA (not sure what credit report/score they use). Mine are discover (TU) and AMEX (experian).
He does have 2 paid off auto loans from past so maybe that will help w/ his tiering. Once we are ready, we do plan on each applying individually and then if needed, together.

[StartingOver10]

Why don't you check your actual FICO scores?  Get the 3B report that shows all the various FICO scores. That is your best ammo when negotiating with a dealership or getting your financing from an outside lender (preferred). His auto enhanced scores may even be much higher. You won't know unless you get the real scores rather than relying on substitutes. 

[Anonymous]

Even with an actual 700 fico score he should be in top tier. He shouldn't have a problem getting a loan. Unless he defaulted on a vehicle loan before