Learn English – Word for something needing maintenance

I need a word for an item in a game which is not actually damaged but needs maintenance or servicing (preemptively replacing worn parts …), like they do on airliners after every so many hours of flight time.

My current best guess so far would be "a car needing maintenance".

I want to differentiate from a similar item not yet needing it. But this way too long. I was hoping for a two-word solution.

Update

The proposed scheduled maintenance is not what I was looking for – Maybe the comparison to Airliners was misleading.

I want an expression for the circumstance that my hypothetical car is, lets say, not trustworthy anymore. It is not damaged, but certainly needs an inspection or such and maybe preemtive repairs. But it is still in working order, I could not call it a damaged or broken car.

I was hoping for an adjective which summarises the state of the car: working, not trustworthy, but not broken though.

Update 2

Seems not to be so easy. Im German, we can just concatenate maintenance and need to (roughly-translated) maintenanceneedy. I was hoping for a similar word; but I guess I settle for beaten down which I guess is short enough and fits the circumstance well.

Thank you all!