Bentley averages 14.7 mpg combined across 8 petrol and diesel 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 | 14.7 mpg |
| Fuel per year | $2,612 |
| Most frugal on record | 21 mpg — $1,829 a year |
| Thirstiest on record | 11 mpg — $3,491 a year |
Bentley models by gas mileage
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 Azure | 12 / 11 | $3,310 | |
| Bentley Arnage | 13 / 11 | $3,368 | |
| Bentley Brooklands | 12 / 11 | $3,398 |
MPG is a number. Dollars per year is the answer.
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How we count
Bentley rests on 94 EPA ratings covering 8 models from 1998 to 2027. The laboratory numbers are EPA's and go in unchanged; the money is ours, at 12,000 miles a year and $3.20 a gallon. Full method.
Frequently asked questions
What is the average Bentley gas mileage?
14.7 mpg combined across 8 models and 94 EPA ratings, from 1998 to 2027 — 29 model years in one figure, which is why it sits below what a new Bentley does today.
Which Bentley model is the most economical?
The Bentley Bentayga at 17.6 mpg, about $2,182 a year in fuel, against the Brooklands at 11.3 mpg and $3,398 — a gap of $1,216 a year between the two ends of the same badge.
How much does a Bentley cost to run?
About $2,612 a year in fuel, at 12,000 miles and $3.20 a gallon. Over five years that is $13,060, before a single service.
Why does the Bentley average look low?
Because it spans 29 model years, back to 1998. Cars built before the mid-2000s were markedly thirstier, and Bentley has 94 ratings from that whole stretch — the recent ones are pulled down by the old.
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