Mobil in Diamond Bar (504 N Diamond Bar Blvd)

I’ve been a local to the area for more than 20 years. I have seen this gas station take advantage of customer prices since the post-pandemic time. It seems at moments they price their fuel somewhat decently and at other times it’s absolute robbery. I do not believe it is solely current market crude oil prices because other chevrons are much different. They are jacking up prices as if some major development is happening around the area and that is not the case. Gas stations like this is what inflates the price of fuel and cost of living in Southern California. The next proposition on a ballot to regulate gas station price gouging will get my vote. But I like to vote with my wallet, so they will no longer get my business.

BEWARE!!! The cash price on the sign ONLY applies if you get a car wash. If not, you can pay cash but it will be the credit card price.

This station constantly misreports prices

Prices both cash and credit consistently higher than the other Mobil 1 mile down the street (Diamond Bar Blvd and 57 North on ramp) and 3 miles away in Chino Hills

I only come here to gas up. So the outside is presentable, good lighting for safety, pumps aren't the newest but work well and almost always has a receipt available. Right next to the freeway so very convenient location.