Rolls-Royce Phantom Drophead Coupe
14 MPG The 2017 Rolls-Royce Phantom Drophead Coupe is EPA-rated at 14 MPG combined (11 city / 19 highway). Over 15,000 miles a year that is about 1071 gallons, $3429 a year in fuel, or $0.229 per mile at $3.20/gal.
Across its full 2008–2017 run it averages 14 MPG, essentially flat across 10 model years.
Running cost at different fuel prices and mileages
The figure everyone actually wants, and the one the EPA does not publish — because it depends on a fuel price no agency will commit to.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.179 | $1786 | $2679 | $3571 |
| $3.00/gal | $0.214 | $2143 | $3214 | $4286 |
| $3.20/gal | $0.229 | $2286 | $3429 | $4571 |
| $3.50/gal | $0.250 | $2500 | $3750 | $5000 |
| $4.00/gal | $0.286 | $2857 | $4286 | $5714 |
| $4.50/gal | $0.321 | $3214 | $4821 | $6429 |
| $5.00/gal | $0.357 | $3571 | $5357 | $7143 |
Every model year
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2017 | 14 MPG | 11 | 19 | $5500 | 637 | 1 |
| 2016 | 14 MPG | 11 | 19 | $5500 | 637 | 1 |
| 2015 | 14 MPG | 11 | 19 | $5500 | 637 | 1 |
| 2014 | 14 MPG | 11 | 19 | $5500 | 637 | 1 |
| 2013 | 14 MPG | 11 | 19 | $5500 | 637 | 1 |
| 2012 | 14 MPG | 11 | 18 | $5500 | 635 | 1 |
| 2011 | 14 MPG | 11 | 18 | $5500 | 635 | 1 |
| 2010 | 14 MPG | 11 | 18 | $5500 | 635 | 1 |
| 2009 | 14 MPG | 11 | 18 | $5500 | 635 | 1 |
| 2008 | 14 MPG | 11 | 18 | $5500 | 635 | 1 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
How it compares in its class
Among the 227 compact cars models tracked here, the Rolls-Royce Phantom Drophead Coupe ranks 220 on current figures, against a class average of 26.7 MPG.
Closest more-efficient alternatives in the same class: Mercedes-Benz 300SE (15), Mercedes-Benz C63 AMG (15), BMW 7 Series (15.5), Mercedes-Benz CL55 AMG (16), BMW M6 Gran Coupe (16.5).
Tailpipe CO₂ is rated at 637 grams per mile, which works out to roughly 9.6 tonnes a year at 15,000 miles.
Questions
What MPG does the Rolls-Royce Phantom Drophead Coupe get?
The 2017 Rolls-Royce Phantom Drophead Coupe is rated at 14 MPG combined by the EPA — 11 city and 19 highway. Across all 10 model years in the database it averages 14 MPG, ranging from 14 to 14 depending on year and trim.
How much does a Rolls-Royce Phantom Drophead Coupe cost in fuel per year?
At 14 MPG and 15,000 miles a year, it burns about 1071 gallons — roughly $3429 a year with fuel at $3.20 a gallon, or $0.229 per mile. The EPA's own published annual figure for the 2017 model is $5500.
Has the Rolls-Royce Phantom Drophead Coupe become more efficient over time?
Barely. It sits at 14 MPG today against 14 in 2008 — essentially flat across 10 model years, with efficiency gains offset by weight and power creep.
Is the Rolls-Royce Phantom Drophead Coupe efficient for its class?
It ranks 220 of 227 in the Compact Cars class on current figures, against a class average of 26.7 MPG. That is 12.7 worse than typical for the class.
EPA test figures from fueleconomy.gov. Cost per mile and annual fuel spend are computed at a reference price of $3.20 per gallon — use your own price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.