Rolls-Royce averages 13.9 mpg combined across 14 models (1984–2027). The best on record does 81 mpg, the thirstiest 8 — a yearly fuel gap of about $4,326.
What that actually costs
What a Rolls-Royce costs to feed, at 12,000 miles a year and $3.20 a gallon.
| Measure | Value |
|---|---|
| Average combined | 13.9 mpg |
| Fuel per year | $2,763 |
| Most frugal on record | 81 mpg — $474 a year |
| Thirstiest on record | 8 mpg — $4,800 a year |
Rolls-Royce models by fuel economy
From the most frugal down. The yearly figure is what the fuel actually costs at 12,000 miles.
| Model | Average mpg | Best / Worst engine | Fuel per year |
|---|---|---|---|
| Rolls-Royce Spectre | 81 / 77 | $490 | |
| Rolls-Royce Wraith | 15 / 14 | $2,648 | |
| Rolls-Royce Ghost | 15 / 13 | $2,685 | |
| Rolls-Royce Dawn | 15 / 14 | $2,704 | |
| Rolls-Royce Cullinan | 14 / 13 | $2,763 | |
| Rolls-Royce Phantom | 14 / 13 | $2,783 | |
| Rolls-Royce Silver Seraph | 13 / 12 | $3,000 | |
| Rolls-Royce Park Ward | 13 / 11 | $3,200 | |
| Rolls-Royce Silver Dawn | 12 / 11 | $3,282 | |
| Rolls-Royce Flying Spur | 11 / 11 | $3,491 | |
| Rolls-Royce Silver Spur | 12 / 8 | $3,728 | |
| Rolls-Royce Corniche | 13 / 8 | $3,765 | |
| Rolls-Royce Silver Spirit | 12 / 9 | $3,802 | |
| Rolls-Royce Camargue | 8 / 8 | $4,800 |
MPG is a number. Dollars per year is the answer.
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How we count
Fuel-economy figures come from EPA fueleconomy.gov — the same laboratory numbers printed on the window sticker. We don't adjust them; real-world consumption depends on how and where you drive.
What we add is money. Yearly cost assumes 12,000 miles at $3.20 a gallon — change either and the ranking stays, only the size of the bill moves. Cost per mile is the same figure divided out, useful when comparing a commute against a weekend car.
Frequently asked questions
What is the average Rolls-Royce mpg?
13.9 mpg combined across 14 models rated between 1984 and 2027. That averages everything the brand has offered, so a long history of trucks pulls it down.
Which Rolls-Royce model is the most economical?
See the table above — models are sorted from the most frugal down, with what each costs in fuel per year.
How much does a Rolls-Royce cost to run?
About $2,763 a year in fuel on average, at 12,000 miles and $3.20 a gallon.
Why does the average look low for a modern brand?
Because it covers every model year on record, back to the 1980s. Cars built before the mid-2000s were markedly thirstier — that era is included.