Smooth check in and upgrade of car. The car itself was spotless and well maintained. Drove smoothly. What I found a bit annoying is that they charged an extra day for picking up the car a bit earlier than anticipated. Additionally, the credit card was charged with 4800 NOK for insurances I didn't take. After contact with the customer service, these charges were refunded correctly in a timely manner (without much hassle). Documentation is not automatically emailed, that would be another improvement.