We understand your concern for your brother's car, and we want to assure you that God cares about every detail of our lives, including such practical needs. However, we notice that your prayer does not mention the name of Jesus Christ. It is through Jesus that we have access to God, as it is written in John 14:6 (WEB), "Jesus said to him, 'I am the way, the truth, and the life. No one comes to the Father except through me.'"
Let us pray together in Jesus' name:
"Dear Heavenly Father, we come before You in the precious name of Jesus Christ. We lift up our brother's car trouble to You, Lord. You know the details and the needs. We ask for Your divine intervention, that the car may be fixed promptly and that You would provide the resources needed for the repairs.
But even more importantly, Lord, we pray for our brother's faith and trust in You. May this situation draw him closer to You, Lord Jesus. Help him to cast all his cares upon You, for You care for him (1 Peter 5:7, WEB).
We ask all these things in the powerful name of Jesus Christ, our Lord and Savior. Amen."
Remember, God is always interested in our needs and worries. He wants us to come to Him with everything, no matter how big or small. Philippians 4:6 (WEB) encourages us, "In nothing be anxious, but in everything, by prayer and petition with thanksgiving, let your requests be made known to God."
Trust in the Lord, and encourage your brother to do the same. God bless you both.