Lexus GS 350 MPG by Year & Engine (EPA)

EPA fuel-economy ratings for every rated Lexus GS 350 model year from 2007 to 2020 — each engine and transmission with its official city, highway and combined figures. Over these years the GS 350 has been offered with 3.5L 6-cyl engines; the most efficient version is the 2020 (up to 23 MPG combined). Every rated gas version calls for premium gasoline. Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.

Lexus GS 350 fuel economy by year

YearCombinedEnginesMedian used priceFor sale
2020 21–23 MPG 3.5L 6-cyl $39,900 7 listings
2019 21–23 MPG 3.5L 6-cyl $32,455 12 listings
2018 22–23 MPG 3.5L 6-cyl $28,000 42 listings
2017 22–23 MPG 3.5L 6-cyl $23,095 20 listings
2016 22–23 MPG 3.5L 6-cyl $19,998 20 listings
2015 21–23 MPG 3.5L 6-cyl $16,995 18 listings
2014 21–23 MPG 3.5L 6-cyl
2013 21–23 MPG 3.5L 6-cyl
2011 20–21 MPG 3.5L 6-cyl
2010 20–22 MPG 3.5L 6-cyl
2009 20–22 MPG 3.5L 6-cyl
2008 20–22 MPG 3.5L 6-cyl
2007 20–22 MPG 3.5L 6-cyl

2020 Lexus GS 350: engines & MPG

The 2020 GS 350 was EPA-rated in 3 versions (3.5L 6-cyl), with combined economy from 21 to 23 MPG. Used 2020 models currently list for a median of $39,900 on VehiSales (7 for sale).

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S8) Premium 20 28 23 MPG
GS 350 F Sport 3.5L 6-cyl Automatic (S8) Premium 19 27 22 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 19 26 21 MPG

2019 Lexus GS 350: engines & MPG

The 2019 GS 350 was EPA-rated in 3 versions (3.5L 6-cyl), with combined economy from 21 to 23 MPG. Used 2019 models currently list for a median of $32,455 on VehiSales (12 for sale).

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S8) Premium 20 28 23 MPG
GS 350 F Sport 3.5L 6-cyl Automatic (S8) Premium 19 27 22 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 19 26 21 MPG

2018 Lexus GS 350: engines & MPG

The 2018 GS 350 was EPA-rated in 3 versions (3.5L 6-cyl), with combined economy from 22 to 23 MPG. Used 2018 models currently list for a median of $28,000 on VehiSales (42 for sale).

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S8) Premium 20 28 23 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 19 26 22 MPG
GS 350 F Sport 3.5L 6-cyl Automatic (S8) Premium 19 27 22 MPG

2017 Lexus GS 350: engines & MPG

The 2017 GS 350 was EPA-rated in 3 versions (3.5L 6-cyl), with combined economy from 22 to 23 MPG. Used 2017 models currently list for a median of $23,095 on VehiSales (20 for sale).

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S8) Premium 20 28 23 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 19 26 22 MPG
GS 350 F Sport 3.5L 6-cyl Automatic (S8) Premium 19 27 22 MPG

2016 Lexus GS 350: engines & MPG

The 2016 GS 350 was EPA-rated in 3 versions (3.5L 6-cyl), with combined economy from 22 to 23 MPG. Used 2016 models currently list for a median of $19,998 on VehiSales (20 for sale).

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S8) Premium 20 28 23 MPG
GS 350 F Sport 3.5L 6-cyl Automatic (S8) Premium 19 27 22 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 19 26 22 MPG

2015 Lexus GS 350: engines & MPG

The 2015 GS 350 was EPA-rated in 2 versions (3.5L 6-cyl), with combined economy from 21 to 23 MPG. Used 2015 models currently list for a median of $16,995 on VehiSales (18 for sale).

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S8) Premium 19 29 23 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 19 26 21 MPG

2014 Lexus GS 350: engines & MPG

The 2014 GS 350 was EPA-rated in 2 versions (3.5L 6-cyl), with combined economy from 21 to 23 MPG.

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S8) Premium 19 29 23 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 19 26 21 MPG

2013 Lexus GS 350: engines & MPG

The 2013 GS 350 was EPA-rated in 2 versions (3.5L 6-cyl), with combined economy from 21 to 23 MPG.

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S6) Premium 19 28 23 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 19 26 21 MPG

2011 Lexus GS 350: engines & MPG

The 2011 GS 350 was EPA-rated in 2 versions (3.5L 6-cyl), with combined economy from 20 to 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S6) Premium 19 26 21 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 18 25 20 MPG

2010 Lexus GS 350: engines & MPG

The 2010 GS 350 was EPA-rated in 2 versions (3.5L 6-cyl), with combined economy from 20 to 22 MPG.

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S6) Premium 19 26 22 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 18 25 20 MPG

2009 Lexus GS 350: engines & MPG

The 2009 GS 350 was EPA-rated in 2 versions (3.5L 6-cyl), with combined economy from 20 to 22 MPG.

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S6) Premium 19 26 22 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 18 25 20 MPG

2008 Lexus GS 350: engines & MPG

The 2008 GS 350 was EPA-rated in 2 versions (3.5L 6-cyl), with combined economy from 20 to 22 MPG.

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S6) Premium 19 27 22 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 18 25 20 MPG

2007 Lexus GS 350: engines & MPG

The 2007 GS 350 was EPA-rated in 2 versions (3.5L 6-cyl), with combined economy from 20 to 22 MPG.

VersionEngineTransmissionFuelCityHwyCombined
GS 350 3.5L 6-cyl Automatic (S6) Premium 19 26 22 MPG
GS 350 AWD 3.5L 6-cyl Automatic (S6) Premium 18 25 20 MPG

Frequently asked questions

What MPG does a Lexus GS 350 get?

Depending on year and engine, EPA combined ratings for the GS 350 range from 21 to 23 MPG. The most efficient rated version is the 2020 model year.

What engines does the 2020 Lexus GS 350 have?

The 2020 GS 350 was EPA-rated with 3.5L 6-cyl engines — see the 2020 table above for each version's exact city/highway figures.

Does the Lexus GS 350 require premium gas?

Yes — every EPA-rated gas GS 350 version specifies premium gasoline.

About this data: EPA ratings from the official U.S. DOE/EPA dataset (fueleconomy.gov), as of July 2026; refreshed monthly. Market prices and listing counts are live medians from VehiSales inventory, updated daily. How to cite: “VehiSales Research, Lexus GS 350 EPA Fuel Economy by Model Year” with a link to https://vehisales.com/research/fuel-economy/lexus/gs-350.

See also: Lexus GS 350 hub — live listings, prices & reliability · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].

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