Tune-up (noun)

The process of adjusting or repairing a machine or vehicle to improve its performance.

Origin:

From the phrase "tune up" meaning "to adjust or repair a machine or vehicle to improve its performance".

Examples:

1. The mechanic recommended a tune-up for the car to improve its gas mileage.
2. The tune-up included changing the oil and spark plugs.
3. The athlete's coach recommended a tune-up before the big race.
4. The tune-up improved the performance of the lawnmower.
5. The tune-up was an important part of regular maintenance for the vehicle.