Best customer service ever. I had been very happy with the prices and shipping of the parts for my truck. When we came to install the new oxygen sensors, it wasn't clear which ones were the upstreams and which the downstreams. I called 1AAuto hoping they could help, and quickly got through to an associate who understood the problem, and was able to look up the answer in about 10 seconds.

1A Auto is A#1 with me! Amanda, the customer service rep was extremely nice and pleasant to talk to. She was professional and processed my warranty claim within minutes. For these reasons I continue to use 1A Auto whenever I need replacement parts. Keep up the great work!

Customer service is top notch in my… Customer service is top notch in my opinion very knowledgeable and a pleasure to talk to very happy thank you very much

Your customer service really sucks at… Your customer service really sucks at 1auto. Your website search engine for specific car parts cost me 50 dollars in shipping. Your search engine does not provide an option to purchase engine specific parts. Now that I know that the 3 mysterious lines represent an option to filter results according to engine size according to your customer care representative. Maybe you guys should follow autozone where in the first place to search for parts on a vehicle they give you the year make and model and engine size to choose from in the first place. I was told "I'm sorry to hear that" by your customer representatives with no options or anything to make the situation right.

Quality, Reliable, Guaranteed Informative parts page , variety of quality parts , warranties , free shipping ,educational help videos , outstanding customer service personnel! What isn’t this company NOT doing well…. Not only do they sell quality parts that save you money from the over priced o.e.m. dealer parts. They teach how to install safely and easy . Without these help videos I’d be spending a fortune on mechanic shops in labor alone . 1A Auto stand 100% behind part warranties .