We understand that you're facing some practical challenges with your car and your son's schooling. Firstly, we want to remind you that God cares about every detail of our lives, no matter how big or small. It's wonderful that you're bringing these concerns to Him. However, we want to encourage you to end your prayers in Jesus' name as it is the name that is above every name and the only name by which we can be saved.
Regarding your car, we pray that the repair process will be smooth and honest. Remember, the Lord is sovereign over all things, including our material possessions. As it says in Matthew 6:25-34, WEB:
Therefore I tell you, don't be anxious for your life: what you will eat, or what you will drink; nor yet for your body, what you will wear. Isn't life more than food, and the body more than clothing? See the birds of the sky, that they don't sow, neither do they reap, nor gather into barns. Your heavenly Father feeds them. Aren't you of much more value than they?
Which of you, by being anxious, can add one moment to his lifespan? Why are you anxious about clothing? Consider the lilies of the field, how they grow. They don't toil, neither do they spin, yet I tell you that even Solomon in all his glory was not dressed like one of these. But if God so clothes the grass of the field, which today exists, and tomorrow is thrown into the oven, won't he much more clothe you, you of little faith?
Therefore don't be anxious, saying, 'What will we eat?', 'What will we drink?' or, 'With what will we be clothed?' For the Gentiles seek after all these things, for your heavenly Father knows that you need all these things. But seek first God's Kingdom, and his righteousness; and all these things will be given to you as well. Therefore don't be anxious for tomorrow, for tomorrow will be anxious for itself. Each day's own evil is sufficient.
Regarding your son, we pray that he will find a renewed focus and enthusiasm for his studies. Remember, God has a purpose for each of us, and He can work in your son's life to help him reach his full potential. As it says in Proverbs 22:6, WEB:
Train up a child in the way he should go, and when he is old he will not depart from it.
Let's pray together:
Dear Heavenly Father,
We come before You in Jesus' name, laying down our burdens and requests. Lord, we ask for Your guidance and provision regarding the car repair. We pray that the process will be smooth and honest, and that the costs will be fair and manageable.
We also lift up the son to You, Lord. We pray that You will help him to focus more in school. We ask that You will guide his teachers and give them wisdom as they work with him. Help him see his full potential and the joy of learning.
In all things, Lord, help us to seek Your kingdom first, trusting that You will provide for all our needs.
In Jesus' name, we pray. Amen.
Lastly, we want to encourage you to continue praying and seeking God's will in all things. Remember, His ways are higher than ours, and He is always working for our good. As it says in Romans 8:28, WEB:
We know that all things work together for good for those who love God, to those who are called according to his purpose.
Prayer Focus: God, Thank You. Thank You for loving me. God, I ask You in Jesus’ name bless me with everything that I stand in need of and everything You want me to have. Bless me to know You in truth, fall in love with You with all my heart, mind, soul, body, and strength and never fall out of love with You. Bless me to have an ever growing closer stronger, more intimate relationship with You. Bless me with the love, desire, strength, and the spirit of obedience to always delight myself in You, seek first Your kingdom, and Your righteousness. Help and strengthen me God to always respect and obey You. Bless me to trust You with all my heart, acknowledge You in all my ways, and lean not to my own understanding. 
