Bentley Continental Supersports Convertible Fuel Economy (MPG)

What is the real-world gas mileage of a 2018 Bentley Continental Supersports Convertible?

The 2018 Bentley Continental Supersports Convertible gets up to 14 MPG combined (12 city / 20 highway) in EPA testing.

Latest model year (2018):

The Bentley Continental Supersports Convertible gets up to 14 MPG combined (12 city / 20 highway) in the Auto (S8), 12 cyl, 6.0 L trim.

Verifiedfueleconomy.gov · Verified August 11, 2026

Bentley Continental Supersports Convertible MPG — All Years

YearTrimEngineFuelCity (MPG)Hwy (MPG)Combined (MPG)
2018Auto (S8), 12 cyl, 6.0 L12 6.0LPremium Gasoline122014
2017Auto (S8), 12 cyl, 6.0 L12 6.0LPremium Gasoline111913

Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.

Bentley Continental Supersports Convertible data analysis

How Bentley Continental Supersports Convertible combined fuel economy varies

Across 2 configurations recorded for the 2017 through 2018 Bentley Continental Supersports Convertible, combined fuel economy runs from 13 MPG to 14 MPG. The strongest figure belongs to the 2018 Bentley Continental Supersports Convertible (Auto (S8), 12 cyl, 6.0 L) at 14 MPG, and the weakest to the 2017 car (Auto (S8), 12 cyl, 6.0 L) at 13 MPG — a spread of 8%. The narrow spread means any year of the Bentley Continental Supersports Convertible in this table behaves much like the others, so you can shop on price, condition and mileage rather than chasing a particular model year.

What changed for 2018

Average combined fuel economy for the 2018 Bentley Continental Supersports Convertible is 14 MPG, against 13 MPG for the 2017 car — it rose by 1 MPG. That is a real improvement, and it is the kind of change worth paying the newer-year premium for if this figure drives your decision.

How to read this Bentley Continental Supersports Convertible data

This page lists every 2017 through 2018 Bentley Continental Supersports Convertible record we hold for this measurement — 2 rows in total, one per configuration and model year rather than a single headline figure. Figures are published as the source agency records them: we do not round, average or interpolate missing years, and a year that is absent from the table is a year with no published measurement rather than a zero. Where a manufacturer offered several drivetrains or body styles in the same year, each appears on its own row, because those variants rarely share the same numbers.

Where these Bentley Continental Supersports Convertible figures come from

Every value on this page is loaded from federal open data — EPA fuel economy submissions, NHTSA vehicle and crash-test records, and manufacturer specification filings — rather than dealer listings or copied editorial content. The Bentley Continental Supersports Convertible record refreshes as the agencies publish, which typically means new model-year rows appear in the autumn and crash-test results follow through the model year as vehicles are tested. Because certification data is filed per configuration, treat any single headline number for this vehicle with caution: the figure that applies to a specific car depends on its engine, drivetrain, body style and model year, all of which are listed separately above. If a number here disagrees with a brochure, the brochure is usually quoting the best available configuration rather than the one being sold.

Official Factory Specs vs. AutoSpecData Expert Benchmarks

The EPA highway loop never holds interstate speed. Here is what the same engine does when you sit on the cruise control.

Cruise speedEPA highway specAutoSpecData adjusted MPGFuel you lose
60 mph20 MPG20 MPG0%
65 mph20 MPG18.6 MPG7%
70 mph20 MPG17.4 MPG13%
75 mph20 MPG16.2 MPG19%
80 mph20 MPG15.1 MPG25%

Our Real-World Speed MPG Adjuster re-scales the Bentley Continental Supersports Convertible EPA highway result with a quadratic drag term (mpg = hwy ÷ (1 + k·(v² − 60²)/60²), k = 0.55 for trucks, SUVs and vans, 0.42 for cars). Wind, roof racks, and a heavy right foot make it worse, never better.

Frequently Asked Questions About Continental Supersports Convertible MPG

What is the MPG of the Bentley Continental Supersports Convertible?

The Bentley Continental Supersports Convertible gets up to 14 MPG combined (12 city / 20 highway) in the 2018 model year. Fuel economy varies by engine and trim — see the full table above for details.

Which Bentley Continental Supersports Convertible trim has the best fuel economy?

The Auto (S8), 12 cyl, 6.0 L trim offers the best combined fuel economy at 14 MPG. Smaller engines and front-wheel-drive configurations typically achieve the highest MPG.

View full Bentley Continental Supersports Convertible specs

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