They claimed there was a smoke smell in the car during return and wanted to charge me 400. They also promoted various insurance options at pickup. Do not book the cheapest option, go for the second tier instead.

The car pickup process was very convenient.

The price for the extension was not the same as what's shown online.

Why was I asked to pay another $175 upon arrival?

Overall, it was satisfactory. We arrived in Los Angeles at night and had to wait a long time for the rental company's shuttle. When it finally arrived, it took us to the DOLLAR location. Turns out they are the same company, but this was not mentioned during booking. If you arrive at night, you can take the DOLLAR shuttle directly since Thrifty is closed at night. At the DOLLAR counter, even though we bought full insurance, the staff tried to add other insurances, claiming they were important, and urged us to buy fuel. This was quite uncomfortable. Also, when picking up the car, the model we booked was not available, and the staff insisted we take a different model. After much back and forth, we managed to get a Corolla. The car had scratches, so we had to confirm with the staff and take photos to document it. Fortunately, the vehicle had no issues during use, and the return process was smooth. So far, no traffic violation fines have been received.