New filler-cap design will stop drivers putting petrol in diesel models

Audi has developed a new fuel filler cap to stop owners accidently filling their diesel models with petrol.

Audi A4, A5 and Q5 TDI models for the 2011 model year will be the first to benefit from the new system.

The fuel filler neck has been redesigned to incorporate contact points that open an internal fuel flap only when the larger diesel pump nozzle applies pressure on them.

The smaller diameter petrol nozzles do not make contact, ensuring that the filler flap remains closed to prevent access to the reservoir.

Instances of misfuelling have risen significantly in recent years creating inconvenient and potentially expensive consequences.

Audi believes this is due to the increased refinement of diesel models which has seen them run nearly as smoothly and quietly as their petrol counterparts.

See all the latest Audi reviews, news and video

Our Verdict

Audi A4
The Audi A4 saloon is bigger, roomier and more aerodynamic than its predecessor

The Audi A4 is an improvement over the previous version, but isn't good enough to topple the BMW 3-series

Join the debate

Comments
27

12 July 2010

[quote Autocar]Audi has developed a new fuel filler cap to stop owners accidently filling their diesel models with petrol.[/quote]
[url]http://www.stopdieselmisfuelling.co.uk/fuelsure-diesel-misfuelling-fuel-...
Didnt Ford do this first?

[url]http://www.ford.co.uk/FordInnovation/Technology/FordComfortAndConvenienc...
bloody clever these Germans.

12 July 2010

Isnt this a rather embarassing 'news' story? Ford has been fitting its cars with this sort of device for ages now.

Next thing you know BMW will be making news for coming up with a twin opening tailgate.....

R32

12 July 2010

Interesting that Audi consider their customers likely to fill their diesel tanks with petrol in the first place. I thought everyone who bought an Audi would know the difference between the two fuels. Then again...

12 July 2010

[quote R32]Interesting that Audi consider their customers likely to fill their diesel tanks with petrol in the first place. I thought everyone who bought an Audi would know the difference between the two fuels. Then again...[/quote]

Indeed,

but given that so many audis are company/renta-cars, i guess these things happen. Still, at least they are refined

Competance executes, character inspires

12 July 2010

There is already a pefectly good free system around to do this. It has been evolving and refining for millions of years and is called a brain.

Lanciaman

12 July 2010

FORD got there first, introduced 2 years ago!!

12 July 2010

Vorsprung Durch Copying Ford!

12 July 2010

How on earth can anyone make this mistake with an Audi anyway? VAG four-cylinder diesels sound like tractor engines...

12 July 2010

[quote Autocar]Audi believes this is due to the increased refinement of diesel models which has seen them run nearly as smoothly and quietly as their petrol counterparts.[/quote]

Don't you just love marketing? Especially when the magazines churn it out for you...

12 July 2010

[quote simon_ingram]FORD got there first, introduced 2 years ago!![/quote]

Yep they certainly did. I've got it on my 2008 Focus and it works. I know this because after a very slight fuel leak problem around the filler neck, Ford replaced the fuel filler neck, except they put a petrol one on my diesel as I found out when I tried to fill it up.

After Ford resolved that issue (and it has been fine ever since), I had a chat with one of their service guys who said the system works very well, and at the time (about 18 months ago) they had only had one misfuel on a car fitted with it; turns out an AA recovery chap was having difficulty putting petrol into another Focus (as it was a diesel), so took a screwdriver to the flap and smashed it open.

Pages

Add your comment

Log in or register to post comments

Find an Autocar car review

Driven this week

  • 2016 Audi A3 Sportback e-tron UK review
    First Drive
    29 September 2016
    First UK drive finds the facelifted A3 Sportback e-tron remains a first-rate plug-in hybrid that is packed with tech if a little short on driver appeal
  • Citroen C11.2 Puretech 82 Furio
    First Drive
    29 September 2016
    Citroën's city car gets a new sporty-looking trim level, adding visual adornments, but no premium for the 1.2-litre Puretech triple we're driving
  • Mercedes C350e Sport
    First Drive
    28 September 2016
    Petrol-electric C-Class is a surprisingly well-priced alternative to a diesel but not the greatest example of the new ‘PHEV’ breed
  • Car review
    23 September 2016
    Aston kicks off its ‘second century plan’ with an all-new turbo V12 grand tourer
  • Ford Ka+ 1.2 Ti-VCT 85
    First Drive
    22 September 2016
    A rounded, refined and well-sorted bargain supermini – once you’re used to the confusing role redefinition imposed on the once-cheeky Ka