Lexus GS 300/GS 400 MPG and Fuel Economy
Lexus have been manufacturing models of GS 300/GS 400 for 3 years, with the latest vehicle in 2000 having a combined MPG of 19.
The estimated fuel cost for the 2000 Lexus GS 300/GS 400 is $3,900 per year.
Government regulators have estimated that value based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.
💵 Compared to an average vehicle over 5 years, you will spend $8,000 more on fuel driving a 2000 Lexus GS 300/GS 400.
🛢 The Lexus GS 300/GS 400 will consume roughly 16 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.
💨 For every mile driven, the Lexus GS 300/GS 400 will emit -1 grams of CO2, which is about -15,000 grams of CO2 per year.
🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 1 tree would be needed to offset emissions from the Lexus GS 300/GS 400.
The table below is a complete list of the 3 Lexus GS 300/GS 400 fuel efficiency specifications we have data for.
Click any vehicle link to see a more detailed breakdown of the car, miles per gallon, emissions, and more.
| Vehicle | Combined MPG | Fuel Cost |
|---|---|---|
| 2000 Lexus GS 300/GS 400 | 19 | $3,900 |
| 1999 Lexus GS 300/GS 400 | 20 | $3,700 |
| 1998 Lexus GS 300/GS 400 | 19 | $3,900 |
Link To or Reference This Page
If you use this page in your research, please reference MPG Buddy as the source.
<a href="https://mpgbuddy.com/cars/lexus/gs-300-gs-400">Lexus GS 300/GS 400 MPG and Fuel Economy</a>
"Lexus GS 300/GS 400 MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/lexus/gs-300-gs-400.
"Lexus GS 300/GS 400 MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/lexus/gs-300-gs-400. Accessed January 3, 2026.
Lexus GS 300/GS 400 MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/lexus/gs-300-gs-400.