The purchases that qualifies for 5% rewards are:

• Gas Stations
• Hotels
• Theme Parks
• Zoos
• Book Stores

The up limit of the cash back rewards is $15, which means you get 5% cash back rewards only in the first $300 purchase in the above categories, the rest of purchases may be subject to a lower cash back ratio, most likely 1%.

Here is the card that can earn the 5% cash back on gas:

	Card Name	Benefits	Requirements
	Discover® More Card	0% BT APR for 6 mths; 0% purch APR for 6 mths; 1% – 5% cash rewards	requires Excellent Credit; regular APR: 11.99%-18.99%; annual fee: none

Discover® Miles Card

Requirements: Excellent Credit, No Annual Fee; Regular APR: 29.99%.
Intro Benefits: Earn 1,000 bonus miles each calendar month you make a purchase for a total of 12,000 bonus miles your first year.  0% on Purchases and Balance transfer for first 6 months.
Regular Benefits: Double Miles on up to $3,000 in travel and restaurant purchases each year. 1 mile for every $1 on all your other purchases

Escape by Discover® Card

Requirements: Excellent Credit, $60 Annual Fee; Regular APR: 11.99 – 18.99%.
Intro Benefits: Cardholders will receive 1,000 bonus miles every month they make a purchase during the first 25 months of opening an account.  0% on Purchases and Balance transfer for first 6 months.
Regular Benefits: 2 miles for every $1 on all your purchases.  Earn two additional miles for every dollar you spend through the ShopDiscover online shopping site.