1. Negotiate with the car rental company: You can contact the car rental company, explain the details of the vehicle maintenance costs, and ask it to bear the corresponding expenses. If the car rental company refuses to bear the cost, it can ask the other party to provide relevant evidence or explanations, or consult relevant legal institutions for advice.
2. Seek third-party mediation: If negotiation with the car rental company fails, you can seek third-party mediation. For example, you can apply to consumer associations or other relevant institutions for mediation, so that professionals can help you solve the problem.
3. Seek legal relief: If the behavior of the car rental company involves illegal acts, you can consider seeking legal relief. For example, you can bring a lawsuit to the local consumer rights protection agency or the court and ask the other party to bear the corresponding liability for compensation.
In short, you should keep calm and take appropriate measures to safeguard your rights and interests when the car rental company refuses to bear the maintenance costs. If you need further help or advice, you can consult the relevant legal institutions or consumer protection organizations.