<prompt> Human: I drive my personal vehicle for work, and spend 200-350 on gas a month. I do get reimbursed on my pay check for mileage. I want to increase my credit historyscore as well as earn cash back. After a bit of research, this looks like a solid bet:Any other suggestions? Im 24 with a credit score of 764.Edit:Fixed link  <response>: Your link didnt work for me, but I think the best Amex cards do 3 for gas, though those may come with an annual fee, effectively reducing your cash back.This Penfed card is 5 for gas year-round, which is the best deal if you can get it. You could also use a combination of cards like Discover, Chase Freedom, etc. which have 5 categories that rotate each quarter. You wont always get 5 on gas, and sometimes theyll overlap, but if you could get 5 two quarters out of the year and 1 otherwise, youd effectively get 3 for the year assuming your gas consumption isnt drastically seasonal. 