Isuzu MPG by Model — Fuel Economy and Yearly Cost

Quick answer

Isuzu averages 18.7 mpg combined across 23 models (1984–2009). The best on record does 35 mpg, the thirstiest 15 — a yearly fuel gap of about $1,463.

Everything on Isuzu

Recalls397 campaigns ReliabilityEvery model ranked Common problems3,681 complaints Check a VINBy production run Cargo space6 models measured DimensionsSize and weight What yours is worthValuation by model Insurance costPer model, per state Window stickersOriginal Monroney labels Decode a VINWhat each character means About the brand27 models tracked

What that actually costs

What a Isuzu costs to feed, at 12,000 miles a year and $3.20 a gallon.

FIG.01·Isuzu fuel cost
Measure	Value
Average combined	18.7 mpg
Fuel per year	$2,053
Most frugal on record	35 mpg — $1,097 a year
Thirstiest on record	15 mpg — $2,560 a year

ROWS 4·SOURCE ForCar, computed from EPA ratings

Isuzu models by fuel economy

From the most frugal down. The yearly figure is what the fuel actually costs at 12,000 miles.

FIG.02·Isuzu models by fuel economy
Model	Average mpg	Best / Worst engine	Fuel per year
Isuzu I-Mark	31.8	35 / 23	$1,208
Isuzu Stylus	28.7	33 / 18	$1,338
Isuzu Trooper II	24.0	33 / 18	$1,600
Isuzu IMPULSE	22.8	26 / 21	$1,684
Isuzu i-280	21.0	21 / 21	$1,829
Isuzu Hombre	20.6	23 / 17	$1,864
Isuzu Oasis	20.3	21 / 19	$1,892
Isuzu i-290	20.0	20 / 20	$1,920
Isuzu NPR	19.2	33 / 16	$2,000
Isuzu FSR	18.6	23 / 16	$2,065
Isuzu FRR	18.2	23 / 15	$2,110
Isuzu i-370	18.0	18 / 18	$2,133
Isuzu Amigo	17.9	20 / 16	$2,145
Isuzu NRR	17.5	18 / 16	$2,194
Isuzu Rodeo	17.1	20 / 15	$2,246
Isuzu i-350	17.0	17 / 17	$2,259
Isuzu Axiom	16.7	18 / 16	$2,299
Isuzu NQR	16.7	20 / 15	$2,299
Isuzu NPR-HD	16.2	19 / 15	$2,370
Isuzu Trooper	16.1	25 / 15	$2,385
Isuzu H-Series	16.0	16 / 16	$2,400
Isuzu Ascender	15.8	16 / 15	$2,430
Isuzu VehiCross	15.0	15 / 15	$2,560

ROWS 23·SOURCE EPA fueleconomy.gov + ForCar

Isuzu I-Mark 31.8 mpg

$1,208 a year · 1984–1989

Isuzu Stylus 28.7 mpg

$1,338 a year · 1987–1992

Isuzu Trooper II 24.0 mpg

$1,600 a year · 1987–1991

Isuzu IMPULSE 22.8 mpg

$1,684 a year · 1984–1992

Isuzu i-280 21.0 mpg

$1,829 a year · 2006–2006

Isuzu Hombre 20.6 mpg

$1,864 a year · 1996–2000

Isuzu Oasis 20.3 mpg

$1,892 a year · 1996–1999

Isuzu i-290 20.0 mpg

$1,920 a year · 2007–2008

Isuzu NPR 19.2 mpg

$2,000 a year · 1987–2009

Isuzu FSR 18.6 mpg

$2,065 a year · 1989–1996

Isuzu FRR 18.2 mpg

$2,110 a year · 1995–2004

Isuzu i-370 18.0 mpg

$2,133 a year · 2007–2008

Isuzu Amigo 17.9 mpg

$2,145 a year · 1989–1999

Isuzu NRR 17.5 mpg

$2,194 a year · 1989–1994

Isuzu Rodeo 17.1 mpg

$2,246 a year · 1989–2004

Isuzu i-350 17.0 mpg

$2,259 a year · 2006–2006

Isuzu Axiom 16.7 mpg

$2,299 a year · 2002–2004

Isuzu NQR 16.7 mpg

$2,299 a year · 1999–2004

Isuzu NPR-HD 16.2 mpg

$2,370 a year · 2000–2009

Isuzu Trooper 16.1 mpg

$2,385 a year · 1984–2002

Isuzu H-Series 16.0 mpg

$2,400 a year · 2005–2008

Isuzu Ascender 15.8 mpg

$2,430 a year · 2003–2008

Isuzu VehiCross 15.0 mpg

$2,560 a year · 1999–2001

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How we count

Fuel-economy figures come from EPA fueleconomy.gov — the same laboratory numbers printed on the window sticker. We don't adjust them; real-world consumption depends on how and where you drive.

What we add is money. Yearly cost assumes 12,000 miles at $3.20 a gallon — change either and the ranking stays, only the size of the bill moves. Cost per mile is the same figure divided out, useful when comparing a commute against a weekend car.

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Frequently asked questions

What is the average Isuzu mpg?

18.7 mpg combined across 23 models rated between 1984 and 2009. That averages everything the brand has offered, so a long history of trucks pulls it down.

Which Isuzu model is the most economical?

See the table above — models are sorted from the most frugal down, with what each costs in fuel per year.

How much does a Isuzu cost to run?

About $2,053 a year in fuel on average, at 12,000 miles and $3.20 a gallon.

Why does the average look low for a modern brand?

Because it covers every model year on record, back to the 1980s. Cars built before the mid-2000s were markedly thirstier — that era is included.

Fuel-economy ratings from EPA fueleconomy.gov, unadjusted. Fuel cost computed by ForCar at 12,000 miles a year and $3.20 a gallon. Last updated Aug 2026. — ForCar Reviewed by Denis Kataev, founder of ForCar.