tune up (someone's) car

Translations
настроить (чей-либо) автомобиль
He took his car to the mechanic to tune up the engine for better performance.
Он отвез свою машину к механику, чтобы настроить двигатель для лучшей производительности.
Definitions
To perform maintenance or adjustments on someone's car to ensure it runs smoothly, often including tasks like changing spark plugs, replacing filters, and checking engine components.