2020 Porsche 911 Carrera 4S Cabriolet
Fuel Economy Overview
The 2020 Porsche 911 Carrera 4S Cabriolet achieves an EPA-estimated 20 MPG in combined city and highway driving, with 17 MPG in the city and 24 MPG on the highway. Powered by a 3L 6-cylinder turbocharged engine paired with a manual 7-spd, this minicompact cars features All-Wheel Drive drive.
In terms of environmental impact, the 2020 911 Carrera 4S Cabriolet produces approximately 451 grams of CO2 per mile. This figure is measured under standardized EPA test conditions and represents tailpipe emissions only. For context, the average new vehicle sold in the United States produces approximately 400 grams of CO2 per mile, meaning this 911 Carrera 4S Cabriolet has higher-than-average emissions in this regard.
The estimated annual fuel cost for this vehicle is $3,450, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $6,500 over a 5-year period. This calculation accounts for differences in fuel consumption efficiency and provides a practical measure of long-term ownership costs attributable to fuel economy.
Energy DNA
Green Scorecard
Personalized Commute CalculatorEPA defaults to 55% City / 45% Hwy
Adjust the slider to match your daily driving habits. City driving involves stop-and-go traffic under 45mph, while highway driving represents sustained speeds over 55mph.
Aerodynamic Speed Penalty
EPA highway tests average roughly 48 mph. Driving at 75 mph increases aerodynamic drag exponentially. Expect your real-world highway fuel economy to drop by roughly 15-20% at interstate speeds.
5-Year Total Cost of Ownership
Recall Intelligence
Porsche Cars North America, Inc. (Porsche) is recalling certain 2019-2025 Cayenne, Cayenne E-Hybrid, 2020-2025 911, Taycan, 2024-2025 Panamera, and 2025 Panamera E-Hybrid vehicles. The rearview camera image may not display when the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Consequence & Remedy
Consequence: A rearview image that does not display properly reduces the driver's view behind the vehicle, increasing the risk of a crash.
Remedy: Dealers will update the driver assistance software, free of charge. Owner notification letters were mailed February 13, 2026. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ASB2. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning January 19, 2026.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2024 911 vehicles. The front windshield and rear window may not be properly secured and can detach.
Consequence & Remedy
Consequence: During air bag deployment, an unsecured windshield may not support the front air bags as intended, increasing the risk of injury in a crash.
Remedy: Dealers will inspect and replace the windshield and rear window as necessary, free of charge. Owner notification letters were mailed on August 30, 2024. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ARA3.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2020-2021 911 Carrera and Taycan vehicles. The pressure input rod connection on the brake booster may be loose and could detach.
Consequence & Remedy
Consequence: A detached pressure input rod will cause the brake pedal to fail, increasing the risk of a crash.
Remedy: Dealers will repair or replace the brake booster as necessary, free of charge. Owner notification letters were mailed October 28, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMB9.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2019 Porsche 911 Speedster, 2020 Porsche 911 Carrera S Coupe, Carrera 4S Coupe, and Carrera S Cabriolet vehicles. The screw connection on the rear axle upper control arm may be loose.
Consequence & Remedy
Consequence: A loose connection may fail, causing driving instability and increasing the risk of a crash.
Remedy: Porsche will notify owners, and dealers will rework and tighten the screw connection on the rear axle upper control arm, free of charge. Owner notification letters were mailed May 21, 2021. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AMA6.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2020 Porsche 911 Carrera 4S Coupe vehicles. The front axle differential bracket may not have been tightened correctly. If it comes loose, the differential could potentially cause damage to surrounding components.
Consequence & Remedy
Consequence: Components such as the fuel tank or drive shafts may become damaged from the loose differential. Damage to the fuel tank can result in fuel leakage, which in the presence of an ignition source may increase the risk of a fire.
Remedy: Porsche will notify owners, and dealers will remove the front axle differential to check the screw threads, and to inspect surrounding components for any consequential damage. Depending on the inspection result, the front axle differential will be reinstalled or replaced using new screw joints torqued to the required specification. All work will be performed free of charge. The recall began August 20, 2020. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is ALA8.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2020 911 Carrera S Coupe, Cabrio, Coupe, 4 Coupe, 4S Coupe, 4 Cabrio, 4S Cabrio, and S Cabrio vehicles. Due to a software error, the hazard warning lights may not function when activated by an operator. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Consequence & Remedy
Consequence: If the hazard warning lights cannot be activated, there is an increased risk of a crash in a hazard situation.
Remedy: Porsche will notify owners, and dealers will reprogram the control unit, free of charge. The recall began February 7, 2020. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AKC1.
Porsche Cars North America, Inc. (Porsche) is recalling certain 2019 911 GT2 RS and 2020 911 Carrera S Coupe vehicles. The bolts connecting the driveshaft to the wheel hub may not have been properly tightened.
Consequence & Remedy
Consequence: If the driveshaft disconnects from the wheel hub, it can increase the risk of crash.
Remedy: Porsche will notify owners, and dealers will properly tighten the driveshaft connection to the wheel hub, free of charge. The recall began August 9, 2019. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AKB2.
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Looking for comprehensive historical data?
NHTSA FARS (Fatal Crash History) and broader generational safety trends are aggregated at the model level rather than by specific engine configurations. View the complete historical data profile for all Porsche 911 Carrera 4S Cabriolet configurations.
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Fuel Cost Analysis
Based on 15,000 miles/year and current fuel prices.
Efficiency Breakdown
Estimated Lifetime Carbon Footprint
(Based on 200,000 miles driven)