No, in most cases the cleaning costs are included in the price of the rental car.
After you have picked up the freshly cleaned vehicle and travelled with it, you do not have to return it washed again – this is usually done by the rental company.
You may incur additional costs only in the case of heavy soiling.
If you just drive your car from one city to another, it usually doesn't leave much of a mark on the vehicle. On a road trip lasting several weeks, things look quite different: Mud encrustations, dirty windscreens, sand inside the vehicle – all this is not exactly uncommon when driving over all kinds of roads and terrain, experiencing extreme weather zones, making stopovers at beaches, etc.
It is not unusual for aa vehicle to become extremely dirty by the end of a journey. And in such cases, many car rental companies charge customers for the cleaning costs. This can quickly become expensive.
Our tip: Return the vehicle "broom clean". If you don't want to take any risks, it's best to drive the rental car through the car wash again before returning it or use the free windscreen wipers that you can find at service stations. It doesn't hurt to clean the inside of the car again with a car hoover ,