Bentley averages 14.6 mpg combined across 8 models (1998–2027). The best on record does 21 mpg, the thirstiest 11 — a yearly fuel gap of about $1,662.
What that actually costs
What a Bentley costs to feed, at 12,000 miles a year and $3.20 a gallon.
| Measure | Value |
|---|---|
| Average combined | 14.6 mpg |
| Fuel per year | $2,630 |
| Most frugal on record | 21 mpg — $1,829 a year |
| Thirstiest on record | 11 mpg — $3,491 a year |
Bentley 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 |
|---|---|---|---|
| Bentley Bentayga | 21 / 15 | $2,182 | |
| Bentley Flying Spur | 19 / 14 | $2,220 | |
| Bentley Continental | 19 / 12 | $2,510 | |
| Bentley Mulsanne | 14 / 12 | $2,931 | |
| Bentley Turbo | 12 / 12 | $3,200 | |
| Bentley Arnage | 13 / 11 | $3,368 | |
| Bentley Azure | 12 / 11 | $3,368 | |
| Bentley Brooklands | 12 / 11 | $3,398 |
MPG is a number. Dollars per year is the answer.
- Fuel profile built from your actual mileage and local prices
- Fuel tracker: what you really spend, month by month
- Insurance and fuel folded into 5-year cost to own
- Compare any two cars on total cost, not sticker price
- No ads, no tracking — and much more
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 Bentley mpg?
14.6 mpg combined across 8 models rated between 1998 and 2027. That averages everything the brand has offered, so a long history of trucks pulls it down.
Which Bentley 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 Bentley cost to run?
About $2,630 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.