If you get into an accident and its the other persons fault does their insurance company have to pay the full.

amount to get your car repaired? Lets say the body shop gives a quote of $1,500 in repairs but the insurance company is only willing to give $800 is there something that can be done so I don't have to put up the rest of the money?

Go get a quote from another repair shop. It is possible that the insurance company feels that $1500 is excessive.

Another issue is that $800 may be the 'blue book' value for the car so the insurance company is not willing to pay more than the car is worth to get it repaired.

If its the other persons fault 100% and your car is actually worth more then $1500 then yes they have to pay for it

Yes the other company has to pay all fees for fixing your car! You should have contacted YOUR insurance to tell them about the accident, they will fight the other company for you, it's what you pay them for!!!

If the other party was 100% at fault for the accident, then yes, you should be paid for the entire amount. However, the insurance company will only pay for damage that is related, fair and reasonable. They will not pay for an inflated estimate.

Most insurance companies will send one of their licensed appraisers out to inspect your vehicle. They will pay you per their appraisal. Should additional damage be found while the vehicle is being repaired, they will provide you with a supplemental appraisal and check.

Unless the total value of the car is $800 or less than the amount to fix the car, the other person's insurance should pay. I would send your estimate to the other party's insurance company and request the full amount. You are allowed to have your car repaired by whoever you want.

If the other party is at fault, their insurance will repair your car or give you what they feel the car is worth, if the car would cost more to repair than total out. You don't have to accept their offer, but they may not make a higher counter offer.

I would get a couple estimates and try to work with the adjustor.

You do not have to pay. Sometimes they will ask you to get two quotes and then have you take your car to the cheaper of the two shops.

Your insurance company will take care of getting the money out of the other insurance company. You may have to pay your deductible amount though.

You submit the bill to both insurance companies. Do not pay it yourself, not out-of-pocket.

You need to talk to your insurance company. Did they get tickets & you didn't? Are you sure your state isn't no-fault??
Talk to your insurance, you pay them enough, they should listen to you.

You have to sue the other person for the amount you need to fix the car. Their insurance company will have to pay the amount the judge awards you.

Unfortunately all the insurance company has to do is pay whats left after the deductable has been deducted. So if you get rear ended, and it costs you 1500 dollars, the person who hit you is responsable for paying you the deductable, they can backrupt themselves around that amount. the insurance company has to pay the rest.

That's when people like yourself get a lawyer & sue.