It's the best when it's 95 outside and your battery dies. Had to rush to Napa at lunch and thank goodness I was greeted by Ron - he was the best! He swapped my old battery out for the new one in the sweltering heat and was nice while doing so! I am so grateful to him and Napa Auto Parts for having such a great store policy (even for the cheapest battery)! Keep up the good work Napa, I will need you again soon I am certain! read more

Love love Brandon. When you think that people don't care anymore, they actually do this gentleman helped my mother and myself with a very difficult part with a 2001 vehicle. Patient and concise and caring now I'm telling everyone about this place. read more

Napa always gives you the right part and always good service. If I go to another competitor they always get the wrong part and have to go back for the right one, but not at Napa, seems they always get it right. read more

My car had an oil leak and my husband decided to check the oil level before I leave for work. He dropped the oil cap and could not find and retrieve it. He called multiple auto parts stores and the dealer for a replacement part but only NAPA had it in stock. He told them to keep it on the counter since I'm already running late for work. Not only was it on the counter waiting for me but also scanned and all I had to do is pay for it while my husband puts the cap on. Little things can make a customer happy. read more

Bought some fog lights guy gave me the wrong ones, of course I waited 2 months before I ever tried to put them on. Ended up being the wrong size , at a completely different Napa store the parts tech at the counter was able to help me get the right size without my original receipt. He went above and beyond. Very awesome and much appreciated. read more

Don't buy Napa parts from Contra Costa Auto parts Co, if you want warrant because you will not get it from them.

Wow, am I impressed! You would think that something as simple as a wheel bearing grease cap is easy to find. Not so. I bought two at a competitor yesterday, just in case I lost one. Well, I lost one and then the second one was obviously too small. So I brought one of my other caps to this Napa parts store this morning. Salesman Rick, took out a micrometer, measured it, looked up the p/n in the many books they have behind the counter, went in the back room, and returned with two caps within one minute. I am traveling across country in a fifth wheel RV and am happy and relieved that Rick helped me out so reliably. Fast service! Accurate service! Friendly service! read more

I've come here for years and each time they are super helpful and friendly. I came in looking for a gasket and they helped me diagnose my additional engine issues, which they were correct about. I can't remember the associates name but honestly they all chimed in and helped me. Competitive pricing and overall good environment. read more

Tried to return a Napa brand set of windshield wipers. The store in Simi says Napa on the outside. The wipers were bought from the Carpinteria Store. The guy at the Simi store said they would not take back the wipers because they are "privately owned". He said I had to return them to a "corporate" store. Ended up going to a Napa store in Ventura where they gladly refunded my money. When I asked why I had to come to them they said then Simi store should have refunded the money. In other words the Simi clerk was just incompetent or just lazy. Thank goodness there are more auto parts store here in Simi besides this one. read more

Excellent excellent !!!service here they have the best prices on alternators for Volvos I am so impressed, with the stores performance,and I rated a 10,I am a customer at NAPA auto store simi Valley thank you Napa!!!! read more

Such a great group of people that work here. I was greeted with warm smiles. Helped me right away. The salesman even went the extra mile to make sure that I knew how to install. read more

They usually have my part. If not I can always wait for tomorrow when the can have it. If they don't and can't, they always know where I should call next. They also have quality tid-bit specialty parts and maintenance/upkeep stuff. read more

Seriously f these guys. Guys over charged me on some synthetic Lucas oil stabilizer by double what the price is worth. Checked at other napa stores and price didn't reflect. These guys are shady thieves. Don't go here. read more

They tried to match or find my wife's Prius battery but never got it to match even though I brought it in. Next time look at different years before or after to see if matches. read more