If your vehicle is damaged as a result of negligence by the body shop (or authorized dealership), your auto insurance policy will not provide reimbursement for any out-of-pocket expenses you incur.
Your best option is to work directly with the body shop/dealership that did the repair work an attempt to work out am amicable solution agreeable to both parties.
Damage to the engine can be potentially very expensive, and perhaps render your vehicle unfit and unsafe to drive. Hiring an attorney may be your next-best recourse if the offending party is uncooperative.
Important Note: This answer was provided by Ed Harris, one of the nation’s premier car insurance brokers. Carinsurancezoom.org is the leading US trusted authority for providing the best car insurance rates from top-rated companies.