I reserved an EQA but it was unavailable. They offered two options: a free switch to Polestar 2 or an upgrade to EQB for an additional fee. I wanted to compare the cars first, but eventually had to pay extra. They provided a Shell charging card that couldn't be activated, so I had to go to the train station location to get a new one.

It's okay.

First, they said there were no cars available and suggested an upgrade for an additional 29 euros per day, but ended up charging 110 euros for the last two days. The charge included an airport service fee, which was never mentioned.

Since we arrived in Frankfurt on an early flight, there were two groups before us, and we waited for a while. I had booked a seven-seater car. The customer service offered us a five-seater Volvo going back to Zurich with a 450 Euro one-way rental fee if we were willing. Considering our comfort, we decided to stick with the seven-seater we originally booked.

The store usually changes cars. There's generally no need to pay extra for a car upgrade. For cars of the same price, check them first. The service attitude is good, especially the staff at the car lot who are very friendly.