Automobile contract and deposit consultation

If the vehicle has quality problems and does not conform to the contract, Party A is the breaching party, Party B has the right to reject the vehicle and request to terminate the contract, and Party A will refund the deposit. However, if the mechanic says that the car has quality problems (unless Party A explicitly recognizes the mechanic's acceptance results), and you refuse to accept it, and then demand the return of the advance payment without proof of quality problems, the defaulting party will become Party B, and according to the contract, the deposit (that is, the advance payment) will be returned to Party A as a penalty. In addition, we have to compare the liquidated damages of 20% of the total contract price. In principle, the liquidated damages shall not exceed 130% of the actual losses. If it is too high or too low, we can ask the court or arbitration tribunal to make adjustments.