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Mitsubishi Sigma MPG

The 1990 Mitsubishi Sigma gets 18 mpg combined (16 city, 20 highway): about $2,133 a year in fuel at $3.20 a gallon and 12,000 miles.

EPA fueleconomy.gov · 1 engines · 1989–1990 · Updated Nov 4, 2026
Quick answer

Against 236 other V6 cars rated 1988–1990, the Sigma sits right on their 18.2 mpg average.

Every Mitsubishi Sigma engine, compared

The Mitsubishi Sigma was rated in a single specification, so its gas mileage does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $3.20 a gallon.

FIG.01·Mitsubishi Sigma gas mileage by engine
EngineCombinedCity / HighwayYearsFuel per year
3L 6-cyl1816 / 201989–1990$2,133
ROWS 1·SOURCE EPA fueleconomy.gov + ForCar

What that actually costs

FIG.02·Mitsubishi Sigma fuel cost
MeasureValue
Cost per mile (1990)$0.178
Fuel per year$2,133
Fuel over five years$10,665
Against other V6 cars, 1988–1990+$23 a year
EPA's own estimate$3,450 a year
ROWS 5·SOURCE ForCar, computed from EPA ratings

City or highway — who is this car for

The 1990 Mitsubishi Sigma gives up 4 mpg in town: 20 on the highway against 16 in the city, $480 a year if every mile were city driving.

FIG.03·Mitsubishi Sigma city versus highway
MeasureValueReading
City (1990)16 mpg$2,400 a year if you only drive in town
Highway20 mpg$1,920 a year if you mostly commute
Gap+4 mpg (25%)Typical for its type
ROWS 3·SOURCE EPA fueleconomy.gov + ForCar

How the Sigma changed over the years

Combined figure across the 2 model years the Sigma was rated in, all of them at 18 mpg.

FIG.04·Mitsubishi Sigma gas mileage by model year
Model yearCombinedCity / HighwayEngines offeredFuel per year
19901816 / 201$2,133
19891816 / 201$2,133
ROWS 2·SOURCE EPA fueleconomy.gov + ForCar
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How we count

This page rests on 2 EPA ratings of the Mitsubishi Sigma — 1 engine across 1989–1990. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $3,450. Full method.

Everything on the Mitsubishi Sigma
Recalls2 campaignsReliability4.5/5Common problems3 complaintsCheck a VINAgainst this exact buildCargo space12 cu ftWindow stickerOriginal Monroney labelDecode a VINWhat each character meansAbout this car1989–1990

Frequently asked questions

What mpg does the 1990 Mitsubishi Sigma get?

18 mpg combined, 16 city and 20 highway, per EPA. Across every year since 1989 the Sigma has averaged 18 mpg.

Is the 1990 Sigma more efficient than the 1989?

About the same: 18 against 18 mpg combined.

Gas mileage ratings from EPA fueleconomy.gov, unadjusted. Running cost computed by ForCar at 12,000 miles a year and $3.20 a gallon. Last updated Nov 2026. — ForCar Reviewed by , founder of ForCar.
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