Great, there was shuttle service

Booked a Volkswagen Golf, received a Fiat instead. Gas stations in Iceland are mostly self-service and have a set limit. In a rush, the tank was slightly short, and they demanded it be topped up plus a fine of 5000 Krona. The staff were deliberately difficult and rude, almost causing us to miss our early morning flight.

Insurance purchased in China is not valid at the rental company.

The service was pretty good. After calling them from the airport, someone came to pick us up within five minutes and took us to the rental location. Returning the car was quick too. Since our hotel was close by, the rental company's employee drove us directly to the hotel.

Our car wasn’t available so we waited 2 hours for a car. When we dropped it off at the end of the trip, it took so long that I missed my flight home and was stuck in Iceland an extra night.