Citroen C6 fuel economy (UK)
Official figures for the Citroen C6 from the Vehicle Certification Agency's new car lists, 2006–2012: 11 versions after removing repeats between lists. Economy is in UK (imperial) mpg; electric versions show miles per kWh and range instead. In the most recent lists (2009–2012, NEDC) combined economy is 25.2–42.8 mpg.
All figures on this page come from the NEDC test. NEDC was the official test before WLTP. NEDC figures are noticeably more optimistic, so do not compare them with WLTP figures.
NEDC figures, VCA lists 2009–2012
NEDC was the official test before WLTP. NEDC figures are noticeably more optimistic, so do not compare them with WLTP figures.
| Version | Fuel | Combined | L/100 km | CO₂ g/km | In lists |
|---|---|---|---|---|---|
| C6 V6 HDi 240 · A6 · 2992 cc | Diesel | 38.7 mpg | 7.3 | 190 | 2012 |
| C6 3.0HDi V6 · A6 · 2992 cc | Diesel | 38.7 mpg | 7.3 | 190 | 2011 |
| C6 3.0HDi V6 · A6 · 2992 cc | Diesel | 38.2 mpg | 7.4 | 195 | 2010 |
| C6 2.2HDi 173hp Auto · A6 · 2179 cc | Diesel | 37.2 mpg | 7.6 | 199 | 2010 |
| C6 2.2HDi 16v · M6 · 2179 cc | Diesel | 42.8 mpg | 6.6 | 175 | 2007–2009 |
| C6 2.0HDi 16v 120hp · M6 · 1997 cc | Diesel | 40.9 mpg | 6.9 | 182 | 2009 |
| C6 2.0HDi 16v 136hp · M6 · 1997 cc | Diesel | 39.8 mpg | 7.1 | 188 | 2009 |
| C6 2.2HDi 16v Auto · A6 · 2179 cc | Diesel | 37.2 mpg | 7.6 | 199 | 2009 |
| C6 2.2HDi 16v 173hp Auto · A6 · 2179 cc | Diesel | 34.4 mpg | 8.2 | 218 | 2009 |
| C6 2.7HDi V6 · A6 · 2720 cc | Diesel | 32.5 mpg | 8.7 | 230 | 2006–2009 |
| C6 3.0i V6 · A6 · 2946 cc | Petrol | 25.2 mpg | 11.2 | 266 | 2006–2009 |
Using these figures
"In lists" shows which yearly VCA lists include the version; it is not the model year. Manufacturers supply figures to the VCA voluntarily, so some makes are missing from some years' lists (for example several large brands between 2019 and 2024); a gap in the years does not mean the car was not sold. Click an mpg figure to open the trip fuel cost calculator with it in UK units, or convert it with the fuel economy converter. Real-world economy is usually lower than official figures — measure yours with the MPG calculator.
Tyre and wheel sizes for this model: Citroen C6 tyre sizes.
Source: Vehicle Certification Agency (VCA), Car Fuel Data — official data download (lists 2006–2012, downloaded 2026-10-22). © Crown copyright, reused under the licence published for this dataset on data.gov.uk (Creative Commons Attribution). Data processed by us (duplicates merged, model names tidied); the VCA is not responsible for our use of it. The VCA states that figures are supplied by manufacturers, may not be achieved in real-world driving, and are used at the user's own risk.