2018 Porsche 911 Carrera 4 GTS Cabriolet Specs
2 powertrain configurations on federal record for the 2018 Porsche 911 Carrera 4 GTS Cabriolet: 3.0L 6-cyl Premium Gasoline, rated up to 22 MPG combined by the EPA.
Source: EPA federal records (fueleconomy.gov) · Updated 2026-10-26 · By CarWhere Research
| Engine | Transmission | Drivetrain | City | Highway | Combined |
|---|---|---|---|---|---|
| 3.0L 6-cyl Premium Gasoline | Manual 7-spd | 4-Wheel Drive | 18 | 26 | 21 |
| 3.0L 6-cyl Premium Gasoline | Automatic (AM-S7) | 4-Wheel Drive | 20 | 25 | 22 |
911 Carrera 4 GTS Cabriolet by year
Buying a used 911 Carrera 4 GTS Cabriolet? Specs are the easy half.
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 2018 Porsche 911 Carrera 4 GTS Cabriolet have?
One powertrain on federal record: 3.0L 6-cyl Premium Gasoline, offered with Manual 7-spd, Automatic (AM-S7) and 4-Wheel Drive. The full per-configuration table is above.
What gas mileage does the 2018 Porsche 911 Carrera 4 GTS Cabriolet get?
EPA combined ratings run 21–22 MPG depending on configuration — the table above shows city/highway/combined for each engine, transmission, and drivetrain.
How do I get the specs for my exact VIN?
These are the federal-record configurations for the 2018 Porsche 911 Carrera 4 GTS Cabriolet 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).