The adjuster’s estimate is a benchmark, not a total claim payment. The insurance company will not expect you to accept their adjuster’s estimate until you’ve established to your own satisfaction that it will cover the cost of repair, so don't feel pressured.
The insurer will expect you to get at least one estimate from your mechanic, garage or car dealer, to compare to theirs.
Your insurance company may opt to pay for the lowest bid, so don't be surprised. Just as you want to be sure your car is adequately repaired, they want to make sure they don’t pay a grossly inflated repair bill. Note that one factor that could reduce the amount of your claim for a repair job is what insurance companies call betterment. If your old car is repaired with brand-new parts, your insurer may argue that the repairs have actually enhanced the car’s value and therefore they can legitimately reduce your claim by the difference between a used part and a new one.
Your insurer can't require you to have repairs done at a particular shop but they can insist that you get more than one estimate for the work to be done on your car if they feel the estimate you received is too high.
You can negotiate if necessary You don’t have to accept it if you believe the amount won’t adequately repair your car. Don’t hesitate to make your points with the adjuster if the repair estimate is too low based on what your mechanic has told you.