Here are some reviews of Booking.com's car rental service:
1. "I recently booked a car rental through Booking.com and I had a great experience. The process was easy and the prices were competitive. The car was in good condition and the pick-up and drop-off process was smooth. I would definitely use Booking.com for car rentals again." – John, 5/5 stars
2. "I was a bit hesitant to book a car rental through Booking.com, but I was pleasantly surprised by the service. The car was clean and in good condition, and the staff at the rental agency were friendly and helpful. I would recommend Booking.com for car rentals." – Sarah, 4/5 stars
3. "I had a terrible experience with Booking.com's car rental service. The car I booked was not available when I arrived at the rental agency, and the staff were unhelpful and rude. I had to wait for hours to get a different car, and it was not in great condition. I would not use Booking.com for car rentals again." – Mike, 1/5 stars
Overall, it seems that most customers have had positive experiences with Booking.com's car rental service, but there are some negative reviews as well. It is always a good idea to read the reviews and do some research before booking a car rental through any website.