Last year I got a car which uses Adblue (Diesel Exhaust Fluid) to keep emissions legal and recently it started telling me it needed a refill (takes about 12 litres from empty). Franchised dealer wanted £3.50/litre to fill it bulk in their workshop or £8 for each 1.89 litre bottle to 'take away'. Terrible rip off and I've heard some places charge much more. Shell fuel station wanted £10 for 1.9 litres!
I did some shopping around and cheapest place I could find on the high street was Halford: £14.99 for 4 litres.
Internet search came up with Unipart Autostore currently doing a half price deal: £9.99 for a full 10 litres. Cheaper than the others by mile.
£3.75 shipping if you don't have a store nearby. Heavy item but maybe you can get more than one for a single shipping charge?
A bit of a limited interest item for now but all newer diesel road vehicles need this stuff so more and more will be around soon. Looks like most places are a rip-off for now though.
Top comments
pbarrie525
2 May 163#49
szigmon123
26 Apr 163#20
Mainly VAG cars I believe, and only a few of them. It's not in the 150bhp 2ltr for example. You would know if your car needs it, as it won't run when you run out
marty-401
26 Apr 163#8
Its a pure form of urea (someone is taking the pee).
Hocky
26 Apr 163#1
What car you got that needs the stuff?
Latest comments (81)
Krizzo3
2 May 16#81
Works out cheaper to disable adblue system in the ECU.
Besford
2 May 16#80
Overwhelmingly the major cost of running a car is depreciaton. Fuel, service, etc. costs are minor in comparison.
Capt Kirk
2 May 16#79
I was a diesel fan until one day my ford focus went into limp mode and would not accelerate. The DPF was clogged up and a replacement would cost over £500. The dealer told me that the DPF units have a life of 70-80k miles. I changed to petrol and it costs me only about £2 more a week in fuel and tax is £100 more. I have noticed that there is less wear on tyres and my break shoes last longer which I can only put down to the lighter petrol car compared to the heavier diesel. There is also less noise and vibration compared to the diesel. The major costs in a lifetime of a car will be repair bills and with the imperfect emission control measures on modern diesel cars I am not sure these will be trouble free in the long run.
Smartguy1
2 May 16#78
That's true if you are buying new and letting a dealer service the car but buying second hand and looking after it yourself is a different ball game. Most people who buy second hand have a budget, same as new I guess but most people I know who have new cars are not buying them, they are renting them or they have a company car. Whilst renting may be an option for me in the future all of my cars to date have been purchased. I prefer large cars and as we all know large petrol cars are more rare these days because diesel cars fare better on CO2 emissions and are less in road tax. This is improving with newer cars but the 10,000 miles a year to benefit had been a dealer's myth for years. It depends on each individual's needs and what they want from a car. If my car was a 2 litre petrol it would be another £80.00 a year to tax. A friend of mine got a bit of a shock when she bought a Mazda RX-8. £400.00 a year to tax!! Less money going to the government can only be a good thing for me. My present car was about £1,200.00 more than the nearest petrol rival. I have had my car 4 years now so that's £300.00 a year extra. It had one service a year before I started doing it myself. Cost of service £179.99. I just rang for a service for my wife's 3 year old Fiesta 1.2 zetec, £199.99 !! The only cost difference on my car over a petrol is the oil is more expensive, nothing else. Service schedule is the same. My car does 45mpg round town and 60mpg on a run, that's at least 20% increase over the petrol rival and possibly more if driven hard. Based on just 8,000 miles a year my fuel will cost about £765.00 based on an average of 50mpg at £1.05 per litre. A petrol would cost me another £160.00 but add the extra cost in road tax that's £240.00. So yes, my diesel is costing me £60.00 a year more but I guarantee when I come to sell it I will get that back and more besides compared with a petrol.
There are advantages for both but I do agree that petrol is becoming more appealing in the long run.
Ripperoo
2 May 16#77
Yup, Diesel!
Costs more to buy, more to service, more to fill up and now this 5hi73!
Capt Kirk
2 May 16#76
Buying and running a diesel car will be more expensive unless you do over 10k miles per year but add the DPF fluids and DPF units that require maintenance it is in my opinion economically not competitive with other fuels.
bordonman
2 May 16#75
Even more Brexit rubbish US CO limit 2.89, EU limit 0.8 (much lower) - US CO2 limit 330. EU limit 224 (much lower)
re the diesel problem lower Co2= higer Nox. If EU diesels only had to meet US Co2 regs their Nox emissions would be much lower.
Besford
2 May 16#74
I've since learned that my car wouldn't have been delivered full as it's considered to be a 'consumable', like petrol - seems very mean when it would be very cheap in bulk to the manufacturer. Hopefully once filled it will go between services without a top up.
Taz1529
2 May 16#73
I have nothing fundamental against diesels, but when it requires a filtering system that clogs up, a fuel-sensitive engine map and some added chemical to get them to be "good" to the environment, I honestly think that changing to a petrol is the overall more economical option.
Midway
2 May 16#72
Nice spot. Well done for posting.
bilo999
2 May 16#71
As described - have been told it's pigs pee! And many brands are now going the ad blu way - Jaguar / Land Rover with Ingenium engined cars are using ad blu also
Pipcola
2 May 161#70
Yes - pig pee so I was informed by a fleet operator
Bogart
2 May 16#69
It is predominantly ammonia. Pound shops have loads of it.:stuck_out_tongue:
GAVINLEWISHUKD
2 May 16#68
Police officer walks up to a man peeing.
Police " You do know it is an offence to urinate in a public place"
Man "I'm not urinating, I'm topping up my Adblue!" :laughing:
csi_guy
2 May 161#67
I think (not sure) you can use water as an illegal substitute.
SFconvert
2 May 16#66
Or by cheating the emissions tests more likely.
pauleden
2 May 16#65
Ammon
Ammonia is a by-product of the SCR reaction. It would be more correct to say "This is dilute urea." because this is mostly water.
romanb777
2 May 16#64
Hi. Adblue is way cheaper than this. Just find a petrol station with AdBlue (dispensed as petrol or diesel) and it will be half price!
SunTzu
2 May 16#63
My Mercedes has a separate filler cap next to the diesel fuel cap for adblue. It still says I have 13600 miles left before it needs refilling, tempted to buy this for the future though as Mercedes charge a fortune!
acj7745
2 May 162#62
For those wondering this is ammonia. It is added to the hottest part of the exhaust stream to reduce NOx. It does this by a process called selective non-catalytic reduction. The same technique is used at power stations all over the country to reduce their NOx emissions. There is an alternative technology called SCR, sure you can figure it out.
NOx happens when the oxygen and nitrogen readily available in the atmosphere bond together at very high temperature. It's not good stuff for all sorts of reasons. But high temperatures in a diesel engine mean increased efficiency. Hi MPG, Hi NOx. Low MPG, Lo NOx. It's a big challenge for car manufacturers, most of them just lie and trick the tests, like VW, I'm sure the rest will follow.
Smartguy1
2 May 16#61
The problem with electric is it is not efficient enough yet to be practical. As a hybrid its ok but what happens when the cell starts to die and although they are guaranteed for up to 7 years by the manufacturer who is going to buy one at 7 years old. They are also very expensive to buy. Diesels have been popular for a long time over petrol as they go for more miles on the same tank. Until manufacturers make petrol cars more fuel efficient then diesel cars will still prevail over petrol. What is ironic is that 30 years ago my 2 litre car did 30mpg around town. Not much difference today.
Diesels produce some nasty emissions when cold which is why the dpf filter was introduced. A quick fix if you like to satisfy euro 4 emissions. Perhaps the eurocrats should have insisted the fuel companies somehow change diesel fuel to produce less emissions when burned. Oh no we couldn't impose any extra expense on the fuel companies can we now.
Diesel is a nasty dirty fuel and whilst I agree electric or hybrid could be the way forward, it certainly is for the green element, manufacturers need to make electric cheaper and more efficient forboth new and second hand car purchases.
wenx
2 May 161#60
I use this stuff in my Nissan Micra, straight into the petrol tank. It gives me more MPG and extra BHP....also use it in my washing machine works a treat as a conditioner.
sonygeezer
2 May 16#59
This stuff makes a brill weed killer
prash_2k
2 May 161#58
Great info and thanks for the heads up so deco heat :smiley:
Now the rant: first it was DPF filters, £1000+ to replace or £500 to clean.
Now they've added another filter and a liquid to put inside it.
I wonder how much pollution is caused by the factory making the DPF filter, this new one and the fluid.
Surely it's more than just sticking with a petrol car making it more efficient and a hybrid.
Or better still Nicola Tesla invented the the electric car before the petrol. So why didn't we continue win electric?
He also invented AC current (when great old Thomas Edison [who was a crook liar and a thief] ) was trying to push DC current.
No to forget before Tesla died he built the tesla tower by taking funding to build a new type of power station. The tesla tower was a method to provide free wireless electricity to all. And he successfully lit a lift bulb from 200 yards.
We have electric cars they work fine. After all top speed on the m1 is around 70-90 at the best of times. Cut the crap we don't need to keep making different ways to cut emissions. Make the wealthy poor and negate the need for oil!!
That what everyone is fighting wars over anyway.
Shambolic
2 May 16#57
Mercedes c200 BlueTec, the clue is sometimes in the name. :wink:
Diesel trucks and lorries have been using it for years, nasty stuff, a bit like pig's urine apparently, pure ammonia!
defard
2 May 16#56
It's still an 'optional extra' you have to pay for on a lot of cars (Cost you a couple of hundred quid to get the emissions down)...if VW had installed this on their motors as standard there wouldn't have been an emissions scandal
Mercedes charge £50 including service to top up ad blue from empty
Robds
2 May 16#53
Besford,Volkswagen also do it in 5 or 10 litre containers and they also sell a pipe to screw onto the container to stop you spilling it,it's about 10.70+vat for 10l so not much more than this. I can't believe your dealer is trying to sell you those 1.89 litre bottles.
Make sure if you spill any to rinse it off straight away as when it crystallises its corrosive to the paintwork.
red_dwarfer
2 May 161#52
Nice deal, just topped up our VW Tiguan with the stuff (got the £19.99 for 10 litres at Halfords) - when you run out your car refuses to start...great!
Doormatt2000
2 May 16#51
Audi Q3 uses it.
blackrat62
2 May 16#50
Actually my 150bhp 2-litre does use it - separate tank for it in the boot.
pbarrie525
2 May 163#49
Broxy
2 May 16#48
dont go spilling this stuff....its wee wee :confused:
pbarrie525
2 May 16#47
Besford
28 Apr 16#46
I've just learned from my dealer that the cars are not delivered full from the factory as they're treating it as a consumable like fuel. At least it explains why mine needed a refill at just 5,000 miles so hopefully it isn't using as much as I feared.
Keep one or two of those 'clever' bottles and refill them from the cheap Unipart one (which has just a filler spout, not the clever 'spillproof' top.
118luke
28 Apr 16#45
You sure your Adblue bottle isnt leaking?
Snarling Shark
28 Apr 16#44
Yes.. A little expensive... but the bottle is impressive !
Cheaper to buy vodka to clean it out..
cecilmcroberts
28 Apr 16#43
Pass although on the site beside my work and the one we have on-site as well is a "special" ad-blu pump of its own not the usual high pressure ones for white/red diesel. The adblu tanks in our vehicles only hold around 40-45litres so not much need for a high pressure pump, I presume as the drivers always moan about how long it takes to fill up!
Smartguy1
27 Apr 16#42
Not really sure what you mean but with the all the issues that diesel car owners have been suffering since the introduction of dpf filters then it gives us good reason to go back to petrol and removing the dpf is not the answer. It's also illegal despite what the dpf removal companies tell you and if you don't inform your insurance company it has been removed then your insurance may be void also as its classed as a modification.
Besford
27 Apr 16#41
You're well named; is your first name Alec by any chance?
Smartguy1
27 Apr 16#40
Was this designed by VW to make their cars cleaner haha. One of our directors has an Audi a6 and that needs adblue.
If there are any of you guys out there who like working on your cars, know your way round a PC and want to cut out the dealer for a dpf regen or oil reset, then get yourself a ds150e diagnostic unit. Got one for my Mazda 6 as I don't like paying the stealer £129.99 for an oil change. I can do everything the dealer can do. Oil dilution reset, dpf regen, dpf reset learned values etc etc. It does most cars.
Snarling Shark
27 Apr 161#38
My Jag XE needed three bottles after 900 miles.. £7 quid a pop at the Jag Garage !!
Besford to Snarling Shark
27 Apr 16#39
£7 - for those 1.9 litre bottles I guess?
welshblob
27 Apr 16#37
Just to state I got my will and won't round the wrong way .... small majority will mod their cars, majority won't ... good point about the new car/leasing aspect although I know VW DPF issues became annoying for my colleagues who had them as company cars a few years ago even though this was fully covered by the policy. I guess most modding will happen on the 2nd hand market especially if these things start failing.
Besford
27 Apr 162#36
Mine came up with a warning at 5,000 miles, which seemed early. Don't know if it was completely full when supplied though and I do a lot of short journeys which probably doesn't help. Around 500 miles per litre if my single experience is accurate: not too bad at £1/litre as here (ie less than £1 extra for each tank of diesel) but ridiculous at dealer prices.
I can't see many people buying (or more likely leasing) a new £40,000 vehicle messing with the ECU/emissions system. As this is supposed to get rid of 80% of nasty NOx why would you do that anyway?
welshblob
27 Apr 16#35
A small proportion of consumers won't but the majority will as they will have no idea on how to workaround these features and the MOT is getting stricter around these mods. Half-assedly or poorly tested pollution solutions appear to have pushed significant costs back to the consumers in recent years with DPF replacements, EGR valves failing/poor consistent acceleration or just generally bad ECU maps. I'm all for saving the planet but not at additional unforeseen large expenses and poor driving experience.
So how often does this stuff need to be topped up?
robodan918
27 Apr 161#34
EGR delete kit
whenever the manufacturer half-assedly builds in an anti-pollution measure the consumer will find a way around it.
Making YET ANOTHER fluid the owner needs to buy makes a delete-kit or chip flash a much more mainstream option. Consumers won't comply
robodan918
27 Apr 16#32
Passing the responsibility on to the consumer - yeah that's totally going to solve the pollution health crisis
Besford to robodan918
27 Apr 16#33
If you don't keep it topped up the car won't run - has to be programmed that way to meet homologation.
Besford
27 Apr 16#31
I've been warned NOT to use HGV pumps - Adblue dispensed under pressure will damage my vehicle's system.
donny1266
27 Apr 16#30
Skoda dealer tops mine up for free whenever I'm passing. I did post a deal of theirs on here which got them a lot of business though so maybe that helped.
littld
27 Apr 161#29
My VW built car just tells lies about emissions. Nice car but hopeless with the truth.
szigmon123
26 Apr 163#20
Mainly VAG cars I believe, and only a few of them. It's not in the 150bhp 2ltr for example. You would know if your car needs it, as it won't run when you run out
devopuk to szigmon123
27 Apr 161#28
Not so, my Yeti 150bhp 2ltr uses Adblue, but it's the 4x4 version, I think the 2 wheel drive 150bhp cars don't need it. I read that it's dictated by the emissions levels, so the 4 wheel drive + additional weight must push it over the emission threshold where adblue/SCR is required.
marty-401
27 Apr 16#27
Sorry I was generalising about the modern/cleaner diesel engines. The dpf does (as far as I know) filter down to 5 microns.....leaving us all to enjoy the really dangerous stuff to enter our bodies undetected.
paullad4
27 Apr 161#26
not for most diesel cars. not to be added to fuel tank! you'll know if you need it!!
simpsod1
26 Apr 161#11
55p per litre at HGV stations, wife's 65 plate Tiguan needs it
cecilmcroberts to simpsod1
27 Apr 16#25
Yeah you can go to "dumb" HGV surface sites (the take debit cards as well as fuel cards now mostly) rough estimate is that it's generally half the price per litre to the current diesel price. In most HGV's they will go into "limp" mode if they run dry and sometimes require a sensor reset also. Been in the Renault's/Volvo's for years now.
marty-401
27 Apr 162#23
Not sure how true this is but I was told that the human nose can filter down to 10 microns.
Thoracic Dust
Particles that will pass through the nose and throat, reaching the lungs. Particles of 10 microns diameter and less. Referred to as PM10 in the USA.
Respirable Dust
Particles that will penetrate into the gas exchange region of the lungs. A hazardous particulate size less than 5 microns. Particle sizes of 2.5 micron (PM2.5) are often used in USA.
So now that the emissions are filtered down to 5 microns we can now all sleep well knowing that only the really harmful particles are left floating around!!!
Besford to marty-401
27 Apr 161#24
Particulates are a completely different issue. It's what the DPF is for.
Adblue is for changing NOx (harmful gaseous oxides of nitrogen) into nitrogen and water.
Increasingly pretty much all diesel cars will need it.
Mine is a Discovery Sport (with the new 'Ingenium' engine). Got the refill warning after about 5,000 miles, which seems early but it does mostly short journeys so maybe that's an issue?
ro8in
26 Apr 16#22
The vw passat alltrack deal that was on here needs add blue.
How many miles do you get per litre of add blue?
marty-401
26 Apr 163#8
Its a pure form of urea (someone is taking the pee).
liamm123 to marty-401
26 Apr 16#10
Yep most modern Diesel engines from approx September 2016 will have this. That's when Eu6.1 comes in. Currently it's all VW diesel engined vehicles of around 2L+.
Currently most manufacturers get away with out it by using other methods of reducing NOx emissions.
shauneco to marty-401
26 Apr 16#21
And selling it.!
junk15
26 Apr 162#19
always been for last 10 years near £10 for 10 liters at many garages for small purchase but bulk buyer usually cost 40-46 pence per litre. £20 complete rip off!
barneyonion
26 Apr 16#18
Ud need more than this stuff to make a vw run clean!
GAVINLEWISHUKD
26 Apr 162#17
Many Coop petrol stations sell it (some have it on pump too) at £14.99 for 10l. Whole not as cheap as the above deal cheaper than Shell and the like.
118luke
26 Apr 162#12
My RR Evoque uses this (2016 model), but afaik you can just call at the dealers and they top it up for free.
bubblin77 to 118luke
26 Apr 161#16
Thought the free refill was only for the first time it needs a top up, other times it's costs you.
liamm123
26 Apr 16#15
In which we'd probably pickup US regulations given they're the only ones that haven't been hampered by manufacturers that sell predominantly diesel engines (the French ones :wink: ) to make it look like cars are more fuel efficient than they are. EU vehicle regulations are miles behind the US and we would be better off without them.
stuarthanley
26 Apr 162#14
We might be out the EU by then so the regulation shouldn't apply.
jollyfj
26 Apr 16#13
Check out http://www.findadblue.com/ You can search for stations where you can fill up from a pump for around 55p a litre. Check the location details carefully though, it's very much aimed at commercial drivers, and some sites only take fuel cards.
megazoid
26 Apr 161#9
I,d imagine most euro 6 cars need it now days the Citroëns and Peugeots do, the dealers should do 9.99 fixed price 10ltr top up part of psa fixed pricing
pasheast
26 Apr 161#7
"Most vehicles driven by diesel – both commercial vehicles and passenger cars – produced from the 1st of Sept 2014 need to be equipped with Selective Catalytic Reduction (SCR) technology, in order meet the standards of European exhaust restrictions (Euro 6), and hence need AdBlue® as a NOx reduction agent.
AdBlue® should only be used in diesel vehicles equipped with SCR technology according to the instructions in the driver's handbook."
POWYSWALES
26 Apr 16#6
I have a 2015 Skoda fabia diesel am I suppose to be using this? is this a bit like redex surely this is not compulsory.
kevsoth
26 Apr 16#3
Get it from a lot of petrol stations. 55p a litre. I put it in my truck. Never heard of a car that used it though.
Deedie to kevsoth
26 Apr 162#5
most, or possibly all, of the current VW group cars use this
stuarthanley
26 Apr 162#4
I'd never heard of this before. Thanks for the heads up OP. When it comes to buying my next car, I'll know what I need to avoid.
shadey12
26 Apr 161#2
didn't know try had started using this on cars but a few petrol stations have this at the side of the diesel pump for lorries just put in amount you need
Opening post
I did some shopping around and cheapest place I could find on the high street was Halford: £14.99 for 4 litres.
Internet search came up with Unipart Autostore currently doing a half price deal: £9.99 for a full 10 litres. Cheaper than the others by mile.
£3.75 shipping if you don't have a store nearby. Heavy item but maybe you can get more than one for a single shipping charge?
A bit of a limited interest item for now but all newer diesel road vehicles need this stuff so more and more will be around soon. Looks like most places are a rip-off for now though.
Top comments
Latest comments (81)
There are advantages for both but I do agree that petrol is becoming more appealing in the long run.
Costs more to buy, more to service, more to fill up and now this 5hi73!
re the diesel problem lower Co2= higer Nox. If EU diesels only had to meet US Co2 regs their Nox emissions would be much lower.
Police " You do know it is an offence to urinate in a public place"
Man "I'm not urinating, I'm topping up my Adblue!" :laughing:
Ammonia is a by-product of the SCR reaction. It would be more correct to say "This is dilute urea." because this is mostly water.
NOx happens when the oxygen and nitrogen readily available in the atmosphere bond together at very high temperature. It's not good stuff for all sorts of reasons. But high temperatures in a diesel engine mean increased efficiency. Hi MPG, Hi NOx. Low MPG, Lo NOx. It's a big challenge for car manufacturers, most of them just lie and trick the tests, like VW, I'm sure the rest will follow.
Diesels produce some nasty emissions when cold which is why the dpf filter was introduced. A quick fix if you like to satisfy euro 4 emissions. Perhaps the eurocrats should have insisted the fuel companies somehow change diesel fuel to produce less emissions when burned. Oh no we couldn't impose any extra expense on the fuel companies can we now.
Diesel is a nasty dirty fuel and whilst I agree electric or hybrid could be the way forward, it certainly is for the green element, manufacturers need to make electric cheaper and more efficient forboth new and second hand car purchases.
Now the rant: first it was DPF filters, £1000+ to replace or £500 to clean.
Now they've added another filter and a liquid to put inside it.
I wonder how much pollution is caused by the factory making the DPF filter, this new one and the fluid.
Surely it's more than just sticking with a petrol car making it more efficient and a hybrid.
Or better still Nicola Tesla invented the the electric car before the petrol. So why didn't we continue win electric?
He also invented AC current (when great old Thomas Edison [who was a crook liar and a thief] ) was trying to push DC current.
No to forget before Tesla died he built the tesla tower by taking funding to build a new type of power station. The tesla tower was a method to provide free wireless electricity to all. And he successfully lit a lift bulb from 200 yards.
We have electric cars they work fine. After all top speed on the m1 is around 70-90 at the best of times. Cut the crap we don't need to keep making different ways to cut emissions. Make the wealthy poor and negate the need for oil!!
That what everyone is fighting wars over anyway.
Diesel trucks and lorries have been using it for years, nasty stuff, a bit like pig's urine apparently, pure ammonia!
Adblue filling tube. 000012499
Adblue 5litre. G052910m3
Adblue 10litre. G052910a4
Make sure if you spill any to rinse it off straight away as when it crystallises its corrosive to the paintwork.
Keep one or two of those 'clever' bottles and refill them from the cheap Unipart one (which has just a filler spout, not the clever 'spillproof' top.
Cheaper to buy vodka to clean it out..
If there are any of you guys out there who like working on your cars, know your way round a PC and want to cut out the dealer for a dpf regen or oil reset, then get yourself a ds150e diagnostic unit. Got one for my Mazda 6 as I don't like paying the stealer £129.99 for an oil change. I can do everything the dealer can do. Oil dilution reset, dpf regen, dpf reset learned values etc etc. It does most cars.
I can't see many people buying (or more likely leasing) a new £40,000 vehicle messing with the ECU/emissions system. As this is supposed to get rid of 80% of nasty NOx why would you do that anyway?
So how often does this stuff need to be topped up?
whenever the manufacturer half-assedly builds in an anti-pollution measure the consumer will find a way around it.
Making YET ANOTHER fluid the owner needs to buy makes a delete-kit or chip flash a much more mainstream option. Consumers won't comply
Thoracic Dust
Particles that will pass through the nose and throat, reaching the lungs. Particles of 10 microns diameter and less. Referred to as PM10 in the USA.
Respirable Dust
Particles that will penetrate into the gas exchange region of the lungs. A hazardous particulate size less than 5 microns. Particle sizes of 2.5 micron (PM2.5) are often used in USA.
So now that the emissions are filtered down to 5 microns we can now all sleep well knowing that only the really harmful particles are left floating around!!!
Adblue is for changing NOx (harmful gaseous oxides of nitrogen) into nitrogen and water.
Increasingly pretty much all diesel cars will need it.
Mine is a Discovery Sport (with the new 'Ingenium' engine). Got the refill warning after about 5,000 miles, which seems early but it does mostly short journeys so maybe that's an issue?
How many miles do you get per litre of add blue?
Currently most manufacturers get away with out it by using other methods of reducing NOx emissions.
AdBlue® should only be used in diesel vehicles equipped with SCR technology according to the instructions in the driver's handbook."