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2003 Hyundai XG 350
Shown: 2003 Hyundai XG 350. Photo: Rutger van der Maar, CC BY 2.0, via Wikimedia Commons
  • Gas
  • Midsize cars
  • MY2001–2005

Hyundai XG MPG & Fuel Cost by Year

5 model years · 2001–2005

19 MPG
Combined
16 MPG
City
24 MPG
Highway
Annual cost · MY2005 XG350 3.5L 6-cyl FWD
$3,440

15,000 mi/yr · regular gasoline $4.36/gal (U.S. average, Sep 2026)

All Hyundai models

Hyundai XG fuel economy at a glance

EPA has rated the Hyundai XG for 5 model years, 2001 to 2005. Across those years its combined rating runs 18–20 MPG. The latest model year, 2005, has 1 configuration rated 19 MPG combined and costing $3,440 a year to fuel at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2001 is the 2001 XG300 3.0L 6-cyl FWD, at 20 MPG.

Hyundai XG MPG by year

1820 200120022005 Gas 1820 200120022005 Gas
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Hyundai XG: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG) $/yr
2002-2005 (XG) Generation page
2005 19 $3,440
2004 18 $3,630
2003 18 $3,630
2002 19 $3,440
2001 Generation page
2001 20 $3,270

Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.

Hyundai XG generations

2 generations between 2001 and 2005. Open one for the table of every model year and configuration.

2005 powertrain options

Gas · 3.5L
Combined
19 MPG
Per year
$3,440
See gas configurations
EPA ratings: fueleconomy.gov file of Sep 29, 2026 · regular gasoline $4.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Hyundai XG's gas mileage by year?

EPA combined ratings for the Hyundai XG run 18–20 MPG across model years 2001 to 2005. The latest year, 2005, is rated 19 MPG.

Which Hyundai XG model year has the best gas mileage?

The 2001 Hyundai XG XG300 3.0L 6-cyl FWD has the highest combined rating since 2001, at 20 MPG.

How much does a Hyundai XG cost to fuel per year?

For MY2005, EPA-rated configurations cost $3,440 a year to fuel, driving 15,000 miles at regular gasoline $4.36/gal (U.S. average, Sep 2026). The most efficient one costs $3,440.

Has the Hyundai XG's fuel economy improved over time?

No. The most efficient configuration moved from 20 MPG in 2001 to 19 MPG in 2005, 1 MPG less.

Which Hyundai XG model years have the same ratings?

EPA lists identical ratings as the previous year for 2004. The generation pages mark those years "same EPA ratings" and point to the year that holds the full table.

How many generations of the Hyundai XG are there?

EPA data covers 2 generations of the Hyundai XG: 2002-2005, 2001. Each has its own page with a table for every model year.