They immediately tried to upsell me to a 7-seater Pathfinder. Initially, I thought it was a free upgrade because the rental car website mentioned this model as part of the same group. Later, they persistently pushed for trailer insurance. Due to language barriers, I ended up paying a $500 upgrade fee. I realized the mistake when I got to the parking lot and went back to resolve it. After complaining to the car rental customer service, they reluctantly canceled the upgrade charges.