A man refills a car at a petrol station after the increase of gasoline prices in Khobar, Saudi Arabia, April 14, 2019.Image used for illustrative purpose.

A man refills a car at a petrol station after the increase of gasoline prices in Khobar, Saudi Arabia, April 14, 2019. Image used for illustrative purpose.

A man refills a car at a petrol station after the increase of gasoline prices in Makkah, Saudi Arabia, April 14, 2019. Image used for illustrative purpose.

Cars line-up at a petrol station after the increase of gasoline prices in Khobar, Saudi Arabia, April 14, 2019.

A man refills a car at a petrol station after the increase of gasoline prices in Khobar, Saudi Arabia, April 14, 2019.Image used for illustrative purpose.

Cars line-up at a petrol station after the increase of gasoline prices in Khobar, Saudi Arabia, April 14, 2019.

Cars line-up at a petrol station after the increase of gasoline prices in Makkah, Saudi Arabia, April 14, 2019. Image for illustrative purposes.

Cars line-up at a petrol station after the increase of gasoline prices in Makkah, Saudi Arabia, April 14, 2019.

Cars line-up at a petrol station after the increase of gasoline prices in Khobar, Saudi Arabia, April 14, 2019.

Cars line-up at a petrol station after the increase of gasoline prices in Makkah, Saudi Arabia, April 14, 2019. REUTERS/Waleed Ali

Cars line-up at a petrol station after the increase of gasoline prices in Khobar, Saudi Arabia, April 14, 2019.

Image used for illustrative purpose. New fuel price is pictured on a fuel pump at a petrol station after the increase of gasoline prices in Makkah, Saudi Arabia, April 14, 2019.

New fuel price is pictured on a fuel pump at a petrol station after the increase of gasoline prices in Khobar, Saudi Arabia, April 14, 2019. Image used for illustrative purpose