Real-world fuel economy

Bentley Real MPG by model

Real-world fuel economy for 10 Bentley models, reported by owners and set against the official figure engine by engine, from 34 submissions. Pick a model for the full engine table and to add your own figure.

Bentley Continental GTC

2007–on · 3 engines with real-world data

22.8mpg

6 submissions

Other Bentley models

Models where too few engines have real-world figures for a page of their own. The data we hold is here rather than lost.

Bentley Arnage

1998–2009

15.3mpg

2 submissions

Engines and official figures

Bentley Arnage (1998–2009)

Final Series: official 14.5 mpg
R: official 14.5 mpg, real 15.3 mpg (105%)
RL: official 14.5 mpg

Bentley Arnage T

2002–on

–

official figures only

Engines and official figures

Bentley Arnage T (2002 - on) (2002–on)

T: official 14.5 mpg

Bentley Azure

1995–on

–

official figures only

Engines and official figures

Bentley Azure (1995 - on) (1995–on)

Azure: official 13.2 mpg
T: official 14.5 mpg

Bentley Bentayga

2016–on

18.8mpg

3 submissions

Engines and official figures

Bentley Bentayga (2016–on)

4.0 V8: official 24.8 mpg
4.0 V8 D: official 35.8 mpg
6.0 W12: official 22.1 mpg, real 18.8 mpg (85%)

Bentley Continental

2003–on

17.4mpg

19 submissions

Engines and official figures

Bentley Continental GT (2003–2010)

GT: official 17.0 mpg, real 17.2 mpg (101%)
GT Speed: official 17.0 mpg

Bentley Continental GT (2010–2018)

Speed: official 19.4–19.5 mpg, real 20.9 mpg (107%)
V8: official 26.7–26.8 mpg
V8 GT-3: official 22.3 mpg
W12: official 17.1–20.1 mpg
W12 Speed: official 19.3 mpg

Bentley Continental GT (2018–on)

V8: official 23.3 mpg
W12: official 20.6 mpg
W12 S: official 20.6 mpg

Bentley Continental Flying Spur

2005–2013

20.3mpg

4 submissions

Engines and official figures

Bentley Continental Flying Spur (2005–2013)

Flying Spur: official 16.6 mpg, real 20.3 mpg (122%)
Flying Spur Speed: official 16.6 mpg

Bentley Continental Supersports

2009–2013

–

official figures only

Engines and official figures

Bentley Continental Supersports (2009–2013)

GT Supersports: official 17.3 mpg
GTC Supersports: official 17.3 mpg

Bentley Flying Spur

2013–on

–

official figures only

Engines and official figures

Bentley Flying Spur (2013–2019)

V8: official 25.9 mpg
V8 S: official 25.9 mpg
W12: official 19.0–19.2 mpg
W12 S: official 19.2 mpg

Bentley Flying Spur (2019–on)

V6 PHEV: official 85.6 mpg
V8: official 22.2 mpg
W12: official 19.1 mpg

Bentley Mulsanne

2010–on

–

official figures only

Engines and official figures

Bentley Mulsanne (2010–on)

Mulsanne: official 18.8–19.3 mpg
Mulsanne Extended Wheelbase: official 18.8 mpg
Mulsanne Speed: official 18.8 mpg

Where the Bentley figures come from

Rebuilt from the archived Honest John Real MPG dataset after the site closed in 2026, with the official NEDC and WLTP figures kept alongside the owner-reported averages, plus new submissions from CarAdCheck readers. Each model page links to the archived page it was built from.

CarAdCheck is not affiliated with Honest John or Volkswagen Financial Services. How we rebuilt Real MPG.

Before you go and see it

Whichever Bentley you settle on, these are the checks worth doing before you go and look at it.

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