Gasoline (or petrol as it is called in India) is partially deregulated so the price is a function of international market rates whereas diesel is heavily subsidized in the country.

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And even though petrol (gasoline) is still dear, ever more efficient cars are helping Americans to travel farther for less.

ECONOMIST: Lexington

Some 68% of respondents said that petrol (gasoline) was hard to afford.

ECONOMIST: Finding more oil has become the first issue of the campaign

The possible eleventh-hour exception is the rising price of petrol (gasoline).

ECONOMIST: Lexington

Hyundai had already suspended production of diesel engines at its Ulsan plant and warned earlier on Tuesday it could also have to stop production of petrol or gasoline engines.

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The company, Air Fuel Syndication, then uses the carbon dioxide and hydrogen to produce methanol which in turn is passed through a gasoline fuel reactor, creating petrol.

FORBES: Insane Technology Watch: Making Petrol From Air

And a "petrol" aroma (it's really more a suggestion of motor oil than gasoline) is a badge of distinction among Alsatian Rieslings.

FORBES: Faking It