Cheap Hertz Car Hire Deals at Köln, Bilderstöckchen Geldernstr./Parkgürtel, Cologne

Be aware that some rental companies impose age restrictions or additional fees for drivers under 25. Make sure to check the company’s age policy when booking.

If you plan to park at the station, check out the parking options and fees ahead of time for convenience.

Ensure you know the rental office's hours to avoid arriving when they're not open.

Download offline maps or bring a secondary GPS in case the station's signal is weak.

Research fuel prices in the area where you'll return the vehicle. Filling up at a local station may be cheaper than paying for fuel through the rental company, especially if they charge higher rates.

If you have a specific vehicle in mind, opt for rentals that guarantee your chosen car type. This ensures that you receive the vehicle you expect, rather than being offered an alternative.

Before booking, review the rental agreement for any hidden fees such as airport surcharges, additional driver fees, or late return penalties. Understanding these can help you budget more effectively.

Before your trip, confirm if your rental includes roadside assistance. This can be crucial in case of breakdowns or emergencies during your rental period.