Rolls-Royce Phantom EWB
14 MPG The 2021 Rolls-Royce Phantom EWB is EPA-rated at 14 MPG combined (12 city / 20 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 2007–2021 run it averages 14 MPG, essentially flat across 15 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 |
|---|---|---|---|---|---|---|
| 2021 | 14 MPG | 12 | 20 | $5500 | 615 | 1 |
| 2020 | 14 MPG | 12 | 20 | $5500 | 615 | 1 |
| 2019 | 14 MPG | 12 | 20 | $5500 | 615 | 1 |
| 2018 | 14 MPG | 12 | 19 | $5500 | 623 | 1 |
| 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 |
| 2007 | 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 149 large cars models tracked here, the Rolls-Royce Phantom EWB ranks 132 on current figures, against a class average of 21.6 MPG.
Closest more-efficient alternatives in the same class: BMW 760li (15), BMW 760Li (15), Mercedes-Benz S65 AMG (15), BMW M760i xDrive (16), Mercedes-Benz AMG S65 (16).
Tailpipe CO₂ is rated at 615 grams per mile, which works out to roughly 9.2 tonnes a year at 15,000 miles.
Questions
What MPG does the Rolls-Royce Phantom EWB get?
The 2021 Rolls-Royce Phantom EWB is rated at 14 MPG combined by the EPA — 12 city and 20 highway. Across all 15 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 EWB 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 2021 model is $5500.
Has the Rolls-Royce Phantom EWB become more efficient over time?
Barely. It sits at 14 MPG today against 14 in 2007 — essentially flat across 15 model years, with efficiency gains offset by weight and power creep.
Is the Rolls-Royce Phantom EWB efficient for its class?
It ranks 132 of 149 in the Large Cars class on current figures, against a class average of 21.6 MPG. That is 7.6 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.