2023 Porsche 911 GT3 Specs
2 powertrain configurations on federal record for the 2023 Porsche 911 GT3: 4.0L 6-cyl Premium Gasoline, rated up to 16 MPG combined by the EPA.
Source: EPA federal records (fueleconomy.gov) · Updated 2026-10-26 · By CarWhere Research
| Engine | Transmission | Drivetrain | City | Highway | Combined |
|---|---|---|---|---|---|
| 4.0L 6-cyl Premium Gasoline | Automatic (AM-S7) | Rear-Wheel Drive | 15 | 18 | 16 |
| 4.0L 6-cyl Premium Gasoline | Manual 6-spd | Rear-Wheel Drive | 14 | 18 | 16 |
911 GT3 by year
Buying a used 911 GT3? Specs are the easy half.
Check which 911 GT3 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 2023 Porsche 911 GT3 have?
One powertrain on federal record: 4.0L 6-cyl Premium Gasoline, offered with Automatic (AM-S7), Manual 6-spd and Rear-Wheel Drive. The full per-configuration table is above.
What gas mileage does the 2023 Porsche 911 GT3 get?
EPA combined ratings run 16–16 MPG depending on configuration — the table above shows city/highway/combined for each engine, transmission, and drivetrain.
Is 2023 a good year for the Porsche 911 GT3?
Specs don't answer that — the federal complaint and recall record does. See the Porsche 911 GT3 year-by-year reliability verdicts at carwhere.com/research/years-to-avoid/porsche/911-gt3, built from NHTSA data.
How do I get the specs for my exact VIN?
These are the federal-record configurations for the 2023 Porsche 911 GT3 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).