Check engine light had come on a few times. Perform ed diagnostic test . Nothing came up. Stated they had seen this before in Hundi and Kia. Gave me some suggestions and to return if light comes on again. Awesome customer service. Did not charge me anything. I had taken my car to the dealership when this happened previously. They charged a huge amount and did not find the problem. Definitely going to stick with Honest 1. I recently had my oil changed there and although I showed up 4 days early for my appointment customer service again was awesome. Did not have to wait long. These guys know how to run a business and take care of their customers