ULEZ - EURO 6 Conversion for Diesal car anyone?

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Hi there, with the impending ULEZ extension i was wondering if anyone has had their older diesel converted to comply with the ULEZ Euro 6 standard - we are reluctant to sell our perfectly brilliant much loved audi A5 2005 Model and if can convert may take this route. Looking for feedback/recommendations of fitter to get work completed.

Many Thanks in advance

[redpost]

I wouldn't waste your time looking at this, your car is EURO 2 or 3 and is much too old for any retro fit short of changing the engine to LPG.

[Earl Aelfheah]

Could cut some holes in the floor, Fred Flintstone style.

It is possible to convert to Euro 6, but not worth it in most cases https://motorway.co.uk/sell-my-car/guides/euro-6-emission-standards-compliance

[Sue]

Cheaper just to pay the ULEZ charge??

[Earl Aelfheah]

Sue Wrote:

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> Cheaper just to pay the ULEZ charge??

Most probably

[malumbu]

No can't be done for cars. The chemistry kit needed to reduce nitrogen dioxide to nitrogen will not fit in earlier vehicles. It is a holly grail. Putting a new Euro 6 engine would be sillily expensive.

It is worth doing it to buses as they are on the road for maybe 30 years - I was involved in a retrofit project - and there is loads of space to put in the catalyst. Not sure why it is stated retrofitting started in 2017 as this was three years early. Also don't know why the then Mayor continued to buy Euro V buses rather than Euro VI which were just round the corner. He was rubbish in lots of respects

https://www.intelligenttransport.com/transport-news/114969/tfl-bus-emissions/

https://www.london.gov.uk/questions/2014/4205

LPG retrofits never took off, there was a company offering it for taxis when they brought in the Low Emission Zone a few years ago. LPG conversions worked for big petrol engines - mainly Land Rovers, which were dreadfully inefficient, but that was decades ago before the new generation of diesels came on board.

LPG conversion of diesels is almost undoable as spark ignition is very different to compression ignition.

Interestingly enough you can convert older motorbikes to be ULEZ compliant.

[peckman]

How about going electric ?

https://www.autocar.co.uk/car-news/used-cars/how-put-electric-car-your-driveway-little-%C2%A3900

[malumbu]

That's fantasy as well. I went in a converted mini on a track day (the original mini) and this was 10's of 1000s to convert. If there was a simple solution like this, then the authorities would have grabbed it.

PS the mini, as opposed to say the Nissan Leaf, was so wrong. It felt like a 50 year old car, which it was.

[Dogkennelhillbilly]

A 2005 Audi A5...? I thought they didn't start making them until 2007.

https://en.m.wikipedia.org/wiki/Audi_A5

[malumbu]

The article is about upcycling a hybrid that has been written off, rather than a conventional internal combustion engine car (hence my point about fantasy). I'll get an informed view from my engineer mates, but expect that this is very niche and certainly not mass market.

[bobbsy]

Can be done with cars:

https://www.cybrand.co.uk/defender

[Dogkennelhillbilly]

I can imagine that there are some specialist applications for which it would make sense and it's interesting to hear it's out there, but for most normal consumers a ?6600 conversion would not be economical. TBF thirsty dirty diesel trucks are exactly the kind of cars targeted by the ULEZ.

[malumbu]

Hmmm, HJS retrofit buses, didn't think they had miniaturised the kit to fit to cars but perhaps the Land Rover affords enough space to do this. I'll have a chat to my vehicle engineer mates.

Not sure what the other point is - the Euro VI standard for heavy vehicles introduced about 8 years ago sorted out many of the problems, cars were a little later catching up and the VW debacle actually helped in strengthening the authorities' hand.

Nice to have a proper chat about pollution and the like!