Does the 1984 Mercury Cougar take premium or regular gas?

The EPA lists the 1984 Mercury Cougar 3.8L 6-cyl, Automatic 4-spd as taking regular. Combined MPG is 19, and the EPA estimates about $3,300 a year in fuel.

← all 1984 Mercury Cougar trims

1984 Mercury Cougar — 3.8L 6-cyl, Automatic 4-spd

This 1984 Mercury Cougar (3.8L 6-cyl, Automatic 4-spd) takes regular (87-octane) gasoline. REGULAR

MPG combined (17 city / 22 hwy)

$3,300

est. fuel cost / year (EPA, 15k mi)

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tailpipe CO₂

Other 1984 Mercury Cougar trims

Trim	Fuel	MPG	Fuel/yr
2.3L 4-cyl, 5-spd manual	REGULAR	19	$3,300
3.8L 6-cyl, Automatic 4-spd	REGULAR	19	$3,300
2.3L 4-cyl, 5-spd manual	REGULAR	19	$3,300
2.3L 4-cyl, Automatic 3-spd	REGULAR	18	$3,450
2.3L 4-cyl, Automatic 3-spd	REGULAR	18	$3,450
3.8L 6-cyl, Automatic 3-spd	REGULAR	18	$3,450
3.8L 6-cyl, Automatic 3-spd	REGULAR	17	$3,650
5.0L 8-cyl, Automatic 4-spd	REGULAR	17	$3,650
5.0L 8-cyl, Automatic 4-spd	REGULAR	16	$3,900

EPA fuel type: Regular · class: Compact Cars · retrieved 2026-06-14.