- Newest year: 2020
- Gas
- Midsize cars
2013-2020 Lexus GS MPG & Fuel Cost
8 model years · 19–31 MPG combined
15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)
Cheaper to fuel than 2 of 10 midsize car configurations, MY2020. Ranked against all rated configurations, not sales-weighted.
2013-2020 Lexus GS at a glance
The 2013-2020 Lexus GS covers 8 model years in the EPA database (40 configurations in all), rated 19–31 MPG combined. The newest model year, 2020, costs about $3,520 a year to fuel for its most efficient version, the 350 3.5L 6-cyl RWD (23 MPG), at premium gasoline $5.36/gal (U.S. average, Sep 2026). Powertrains over the years: gas and hybrid. EPA changed the ratings in 2014, 2015, 2016, 2017, 2018, 2019 and 2020. The best combined rating in the generation, 31 MPG, was reached in 2013, 2014, 2015, 2016, 2017 and 2018.
2013-2020 Lexus GS by model year
| Model year | Powertrains | Combined | $/yr | EPA ratings |
|---|---|---|---|---|
| 2020 | Gas | 19–23 MPG | $3,520–$4,290 | Ratings changed |
| 2019 | Gas | 19–26 MPG | $3,140–$4,290 | Ratings changed |
| 2018 | Gas, Hybrid | 19–31 MPG | $2,560–$4,290 | Ratings changed |
| 2017 | Gas, Hybrid | 19–31 MPG | $2,560–$4,290 | Ratings changed |
| 2016 | Gas, Hybrid | 19–31 MPG | $2,560–$4,290 | Ratings changed |
| 2015 | Gas, Hybrid | 21–31 MPG | $2,560–$3,760 | Ratings changed |
| 2014 | Gas, Hybrid | 21–31 MPG | $2,560–$3,760 | Ratings changed |
| 2013 | Gas, Hybrid | 21–31 MPG | $2,570–$3,750 | First year |
What the 2020 350 3.5L 6-cyl RWD costs to drive
Per month
$293
$3,520 a year ÷ 12
Per 25 miles
$5.87
Per 100 miles
$23.47
Five years
$17,600
5 × the yearly cost, prices held at today's level
vs the midsize car median
$700more a year
Class median $2,820 a year, MY2020
Based on 15,000 miles a year and premium gasoline $5.36/gal (U.S. average, Sep 2026).
2020 Lexus GS MPG
Versus 2019: The most efficient configuration moves from 26 to 23 MPG, down 3. Its annual cost goes from $3,140 to $3,520, $380 more.
Gas configurations (4)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 350 3.5L 6-cyl RWD (Most efficient) | 3.5L 6-cyl | RWD | 20 | 28 | 23 | $3,520 |
| 350 F Sport | 3.5L 6-cyl | RWD | 19 | 27 | 22 | $3,680 |
| 350 3.5L 6-cyl AWD | 3.5L 6-cyl | AWD | 19 | 26 | 21 | $3,830 |
| F | 5.0L 8-cyl | RWD | 16 | 24 | 19 | $4,290 |
4 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2019 Lexus GS MPG
19–26 MPG · $3,140–$4,290/yr
Versus 2018: The most efficient configuration moves from 31 to 26 MPG, down 5. Its annual cost goes from $2,560 to $3,140, $580 more.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 300 (Most efficient) | 2.0L 4-cyl turbo | RWD | 22 | 32 | 26 | $3,140 |
| 300 F Sport | 2.0L 4-cyl turbo | RWD | 21 | 30 | 24 | $3,350 |
| 350 3.5L 6-cyl RWD | 3.5L 6-cyl | RWD | 20 | 28 | 23 | $3,520 |
| 350 F Sport | 3.5L 6-cyl | RWD | 19 | 27 | 22 | $3,680 |
| 350 3.5L 6-cyl AWD | 3.5L 6-cyl | AWD | 19 | 26 | 21 | $3,740 |
| F | 5.0L 8-cyl | RWD | 16 | 24 | 19 | $4,290 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2018 Lexus GS MPG
19–31 MPG · $2,560–$4,290/yr
Versus 2017: The most efficient configuration stays at 31 MPG. Its annual cost stays at $2,560.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 300 (Most efficient) | 2.0L 4-cyl turbo | RWD | 22 | 32 | 26 | $3,120 |
| 300 F Sport | 2.0L 4-cyl turbo | RWD | 21 | 30 | 24 | $3,350 |
| 350 3.5L 6-cyl RWD | 3.5L 6-cyl | RWD | 20 | 28 | 23 | $3,520 |
| 350 F Sport | 3.5L 6-cyl | RWD | 19 | 27 | 22 | $3,680 |
| 350 3.5L 6-cyl AWD | 3.5L 6-cyl | AWD | 19 | 26 | 22 | $3,690 |
| F | 5.0L 8-cyl | RWD | 16 | 24 | 19 | $4,290 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Hybrid configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 450h (Most efficient) | 3.5L 6-cyl | RWD | 29 | 34 | 31 | $2,560 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2017 Lexus GS MPG
19–31 MPG · $2,560–$4,290/yr
Versus 2016: The most efficient configuration stays at 31 MPG. Its annual cost stays at $2,560.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 200t (Most efficient) | 2.0L 4-cyl turbo | RWD | 22 | 32 | 26 | $3,120 |
| 200t F Sport | 2.0L 4-cyl turbo | RWD | 21 | 30 | 24 | $3,350 |
| 350 3.5L 6-cyl RWD | 3.5L 6-cyl | RWD | 20 | 28 | 23 | $3,530 |
| 350 F Sport | 3.5L 6-cyl | RWD | 19 | 27 | 22 | $3,680 |
| 350 3.5L 6-cyl AWD | 3.5L 6-cyl | AWD | 19 | 26 | 22 | $3,730 |
| F | 5.0L 8-cyl | RWD | 16 | 24 | 19 | $4,290 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Hybrid configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 450h (Most efficient) | 3.5L 6-cyl | RWD | 29 | 34 | 31 | $2,560 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2016 Lexus GS MPG
19–31 MPG · $2,560–$4,290/yr
Versus 2015: The most efficient configuration stays at 31 MPG. Its annual cost stays at $2,560.
Gas configurations (6)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 200t (Most efficient) | 2.0L 4-cyl turbo | RWD | 22 | 32 | 26 | $3,120 |
| 200t F Sport | 2.0L 4-cyl turbo | RWD | 21 | 30 | 24 | $3,350 |
| 350 3.5L 6-cyl RWD | 3.5L 6-cyl | RWD | 20 | 28 | 23 | $3,520 |
| 350 F Sport | 3.5L 6-cyl | RWD | 19 | 27 | 22 | $3,680 |
| 350 3.5L 6-cyl AWD | 3.5L 6-cyl | AWD | 19 | 26 | 22 | $3,700 |
| F | 5.0L 8-cyl | RWD | 16 | 24 | 19 | $4,290 |
6 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Hybrid configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 450h (Most efficient) | 3.5L 6-cyl | RWD | 29 | 34 | 31 | $2,560 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2015 Lexus GS MPG
21–31 MPG · $2,560–$3,760/yr
Versus 2014: The most efficient configuration stays at 31 MPG. Its annual cost stays at $2,560.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 350 3.5L 6-cyl RWD (Most efficient) | 3.5L 6-cyl | RWD | 19 | 29 | 23 | $3,560 |
| 350 3.5L 6-cyl AWD | 3.5L 6-cyl | AWD | 19 | 26 | 21 | $3,760 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Hybrid configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 450h (Most efficient) | 3.5L 6-cyl | RWD | 29 | 34 | 31 | $2,560 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2014 Lexus GS MPG
21–31 MPG · $2,560–$3,760/yr
Versus 2013: The most efficient configuration stays at 31 MPG. Its annual cost goes from $2,570 to $2,560, $10 less.
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 350 3.5L 6-cyl RWD (Most efficient) | 3.5L 6-cyl | RWD | 19 | 29 | 23 | $3,570 |
| 350 3.5L 6-cyl AWD | 3.5L 6-cyl | AWD | 19 | 26 | 21 | $3,760 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Hybrid configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 450h (Most efficient) | 3.5L 6-cyl | RWD | 29 | 34 | 31 | $2,560 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
2013 Lexus GS MPG
21–31 MPG · $2,570–$3,750/yr
Gas configurations (2)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 350 3.5L 6-cyl RWD (Most efficient) | 3.5L 6-cyl | RWD | 19 | 28 | 23 | $3,560 |
| 350 3.5L 6-cyl AWD | 3.5L 6-cyl | AWD | 19 | 26 | 21 | $3,750 |
2 configurations require or recommend higher-octane gasoline and are costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Hybrid configurations (1)
| Trim | Engine | Drive | City | Hwy | Comb. | $/yr |
|---|---|---|---|---|---|---|
| 450h (Most efficient) | 3.5L 6-cyl | RWD | 29 | 34 | 31 | $2,570 |
1 configuration requires or recommends higher-octane gasoline and is costed at premium gasoline $5.36/gal (U.S. average, Sep 2026).
Fuel cost by state
Yearly cost of the 350 3.5L 6-cyl RWD: $4,200 in California and $3,050 in Texas, a $1,150 difference.
- California $4,200
- Washington $3,950
- New York $3,480
- Florida $3,210
- Texas $3,050
Similar cars
Closest combined MPG among MY2020 midsize car models.
Generations
- 2000-2005 (S160)
- 2006-2011 (S190)
- 2013-2020 (L10)
Frequently asked questions
What gas mileage does the 2013-2020 Lexus GS get?
EPA rates the 2013-2020 Lexus GS at 19–31 MPG combined across 40 configurations and 8 model years. The most efficient version, the 2018 450h 3.5L 6-cyl RWD, is rated 31 MPG (29 city, 34 highway). By powertrain: Gas: 19–26 MPG; Hybrid: 31 MPG.
Which years had the best MPG in the 2013-2020 Lexus GS?
The 450h 3.5L 6-cyl RWD reached the generation's best combined rating, 31 MPG, in 2013, 2014, 2015, 2016, 2017 and 2018. The lowest top rating, 23 MPG, was in 2020.
Did EPA ratings change during the 2013-2020 Lexus GS?
Yes. Ratings changed in 2014, 2015, 2016, 2017, 2018, 2019 and 2020.
How does the 2013-2020 Lexus GS compare with the previous generation?
The previous generation (2006-2011 Lexus GS) is rated 19–23 MPG combined and costs $3,460–$4,230 a year to fuel; the 2013-2020 model is rated 19–31 MPG and costs $2,560–$4,290 a year.
How much does it cost to fuel a 2020 Lexus GS per year?
Driving 15,000 miles a year at premium gasoline $5.36/gal (U.S. average, Sep 2026), the 350 3.5L 6-cyl RWD costs about $3,520 a year. Across all 4 configurations the cost runs $3,520–$4,290 a year. That is a $770 difference between the cheapest and the costliest configuration.
How much does it cost to drive a 2020 Lexus GS 100 miles?
About $23.47 per 100 miles for the 350 3.5L 6-cyl RWD at premium gasoline $5.36/gal (U.S. average, Sep 2026), and between $23.47 and $28.60 across all configurations. That is the annual cost over 15,000 miles divided by 150.
Is the 2020 Lexus GS more efficient in the city or on the highway?
The 350 3.5L 6-cyl RWD is rated 20 city and 28 highway MPG, so it is more efficient on the highway, by 8 MPG.
How does the 2020 Lexus GS compare with other midsize car configurations?
The 350 3.5L 6-cyl RWD costs about $3,520 a year to fuel, $700 more than the class median of $2,820, and less than 2 of 10 midsize car configurations. The comparison covers all 159 rated midsize car configurations for MY2020, not weighted by sales.
Is the 2020 Lexus GS different from the 2019 model?
The most efficient configuration moves from 26 to 23 MPG, down 3. Its annual cost goes from $3,140 to $3,520, $380 more. EPA lists 4 configurations for 2020 against 6 configurations for 2019. See the 2019 Lexus GS for that year.