Infiniti G20 MPG

The 2002 Infiniti G20 gets 24 mpg combined (21 city, 29 highway): about $1,600 a year in fuel at $3.20 a gallon and 12,000 miles.

EPA fueleconomy.gov · 1 engines · 1991–2002 · Updated Nov 3, 2026
Quick answer

Against 260 other 4-cyl cars rated 2000–2002, the G20 sits right on their 24.4 mpg average.

Every Infiniti G20 engine, compared

The Infiniti G20 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·Infiniti G20 gas mileage by engine
EngineCombinedCity / HighwayYearsFuel per year
2L 4-cyl23.920.9 / 28.91991–2002$1,607
ROWS 1·SOURCE EPA fueleconomy.gov + ForCar

What that actually costs

Against its rivals in the same model years, the Ford Focus gets 27.7 mpg, the Hyundai Accent 28 mpg and the Mitsubishi Lancer 26 mpg, next to 24 mpg for the 2002 G20. The G20 costs the most of them to run: $229 a year more than the Hyundai Accent.

FIG.02·Infiniti G20 fuel cost
MeasureValue
Cost per mile (2002)$0.133
Fuel per year$1,600
Fuel over five years$8,000
Against other 4-cyl cars, 2000–2002+$26 a year
EPA's own estimate$2,610 a year
ROWS 5·SOURCE ForCar, computed from EPA ratings

City or highway — who is this car for

The 2002 Infiniti G20 gives up 8 mpg in town: 29 on the highway against 21 in the city, $505 a year if every mile were city driving.

FIG.03·Infiniti G20 city versus highway
MeasureValueReading
City (2002)21 mpg$1,829 a year if you only drive in town
Highway29 mpg$1,324 a year if you mostly commute
Gap+8 mpg (38%)Wide — this car dislikes traffic
ROWS 3·SOURCE EPA fueleconomy.gov + ForCar

How the G20 changed over the years

The G20 peaked in 2002 at 24 mpg (21 city, 29 highway) and was at its thirstiest in 1999 at 23 — 1 mpg apart, or $70 a year in fuel between buying one year and the other.

FIG.04·Infiniti G20 gas mileage by model year
Model yearCombinedCity / HighwayEngines offeredFuel per year
20022421 / 291$1,600
20012421 / 291$1,600
20002421 / 291$1,600
19992320 / 281$1,670
19962421 / 291$1,600
19952421 / 291$1,600
19942421 / 291$1,600
19932421 / 291$1,600
19922421 / 291$1,600
19912421 / 291$1,600
ROWS 10·SOURCE EPA fueleconomy.gov + ForCar
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How we count

This page rests on 10 EPA ratings of the Infiniti G20 — 1 engine across 1991–2002. 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 $2,610. Full method.

Frequently asked questions

What mpg does the 2002 Infiniti G20 get?

24 mpg combined, 21 city and 29 highway, per EPA. Across every year since 1991 the G20 has averaged 23.9 mpg.

Is the 2002 G20 more efficient than the 2001?

About the same: 24 against 24 mpg combined.

Which G20 year has the best gas mileage?

The 2002, at 24 mpg combined (21 city, 29 highway), which is also the latest model year we hold.

Does the G20 get better gas mileage than the Ford Focus?

No: 24 mpg for the 2002 G20 against 27.7 for the 2003 Ford Focus, about $214 a year more to run.

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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