2014 Porsche 911 Carrera 4S Cabriolet
Fuel Economy Overview
The 2014 Porsche 911 Carrera 4S Cabriolet achieves an EPA-estimated 21 MPG in combined city and highway driving, with 18 MPG in the city and 26 MPG on the highway. Powered by a 3.8L 6-cylinder engine paired with a manual 7-spd, this minicompact cars features 4-Wheel Drive drive.
In terms of environmental impact, the 2014 911 Carrera 4S Cabriolet produces approximately 424 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 $3,300, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $5,750 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 model year 2014-2015 Porsche 911, Boxster, and Cayman vehicles manufactured May 7, 2014, to September 23, 2014. The front hood upper lock components were not manufactured to specification and may fail to securely latch the vehicle's hood during operation.
Consequence & Remedy
Consequence: A failure of the hood latching mechanism may cause the hood to suddenly open during vehicle operation and will severely impede the driver's ability to see out the front windshield, increasing the risk of a vehicle crash.
Remedy: Porsche will notify owners, and dealers will replace the lock on the front hood, free of charge. The recall began December 12, 2014. Owners may contact Porsche customer service at 1-800-767-7243. Porsche's number for this recall is AE04.
Porsche Cars North America, Inc. (Porsche) is recalling certain model year 2014 Boxster, Boxster S, Cayman, Cayman S and 911 Carrera (S, Cabriolet, S Cabriolet, 4, 4S, 4 Cabriolet, 4s Cabriolet) vehicles manufactured September 2, 2013, through September 23, 2013. In the affected vehicles, the passenger seats may be equipped with defective wiring harnesses resulting in intermittent contact with the harness plug.
Consequence & Remedy
Consequence: The intermittent plug may cause the passenger seat frontal and knee airbags may be deactivated. In the event of a crash necessitating airbag deployment, this may increase the risk of injury to the front passenger.
Remedy: Porsche will notify owners, and dealers will replace the front passenger seat free of charge. The recall began on December 11, 2013. Owners may contact Porsche at 1-770-290-3500. Porsche's recall number is AD04.
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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)