We had read the reminders provided by Zuzuche before arriving at the Frankfurt store, but the staff informed us that the car we booked was unavailable and gave us a similar one, which actually had a much smaller trunk. They did not ask us if we needed GPS or any additional services though we declared that we didn't need any extras and had already paid through Zuzuche. When signing the agreement, the staff positioned the paper so it covered the upper part, which we couldn't see. After signing it, we found out about the additional charges only when returning the car. We have rented cars directly or through Zuzuche from various companies across Europe multiple times, but this was the first time we faced such an issue. It was also shocking that we couldn't communicate in English over their customer service phone line. We will definitely not choose Europcar again, as this was highly dishonest and felt like a scam! Zuzuche also refused to help us further because we had signed the agreement, which was very disappointing!