The rental location is not inside the airport, requiring you to walk to Bus Stop 12 (which is actually the farthest stop) for the shuttle to pick you up, so make sure to leave enough time. Since the car model wasn't one we were familiar with, driving it was quite inconvenient initially. To make things worse, shortly after starting, a tire pressure warning alert appeared. We called customer service, and they told us to find a repair shop ourselves. While in Birmingham, we thought of getting it checked at one of their local offices, but they said the car wasn't rented from their branch and refused to help. There were also one or two occasions when the oil warning light came on, which indicates the vehicle likely needs maintenance. Who would be responsible if issues occurred during travel due to such vehicle conditions? Next time we'll avoid cheap options and go for major car rental companies instead.