When driving at 30 kilometers, it showed insufficient urea. I had to buy urea myself and wasn't reimbursed. They also pushed us to buy their insurance, claiming Chinese insurance is all a scam. I wasted an extra hour in traffic buying urea to avoid potential issues when returning the car. When I got to the return location, they were off work, and there was no clear signage for returns, leading to a deduction of my entire deposit. To summarize, Ezu is a terrible rental car company. I strongly recommend never choosing this company, even if others are more expensive. I've never encountered such poor service in my life.