2020 Lexus GS 350 Specs
2 powertrain configurations on federal record for the 2020 Lexus GS 350: 3.5L 6-cyl Premium Gasoline, in Rear-Wheel Drive and All-Wheel Drive, rated up to 23 MPG combined by the EPA.
Source: EPA federal records (fueleconomy.gov) · Updated 2026-10-26 · By CarWhere Research
| Engine | Transmission | Drivetrain | City | Highway | Combined |
|---|---|---|---|---|---|
| 3.5L 6-cyl Premium Gasoline | Automatic (S8) | Rear-Wheel Drive | 20 | 28 | 23 |
| 3.5L 6-cyl Premium Gasoline | Automatic (S6) | All-Wheel Drive | 19 | 26 | 21 |
GS 350 by year
Buying a used GS 350? Specs are the easy half.
Check which GS 350 years to avoid (federal complaint and recall records), then check the specific car: the Full VIN Report shows that VIN's factory build, recall record, and market history before you pay for it.
Frequently asked questions
What engines does the 2020 Lexus GS 350 have?
One powertrain on federal record: 3.5L 6-cyl Premium Gasoline, offered with Automatic (S8), Automatic (S6) and Rear-Wheel Drive or All-Wheel Drive. The full per-configuration table is above.
What gas mileage does the 2020 Lexus GS 350 get?
EPA combined ratings run 21–23 MPG depending on configuration — the table above shows city/highway/combined for each engine, transmission, and drivetrain.
Is 2020 a good year for the Lexus GS 350?
Specs don't answer that — the federal complaint and recall record does. See the Lexus GS 350 year-by-year reliability verdicts at carwhere.com/research/years-to-avoid/lexus/gs-350, built from NHTSA data.
How do I get the specs for my exact VIN?
These are the federal-record configurations for the 2020 Lexus GS 350 overall. For one specific vehicle — its exact engine, trim, factory options, and original window sticker — decode the 17-character VIN free at carwhere.com/tools/vin-decoder.
Where does this data come from?
The U.S. EPA's public vehicle dataset (fueleconomy.gov) — the federal record of every US-market configuration since 1984 — refreshed 2026-10-26. Public-domain data; republish with attribution to CarWhere (carwhere.com).