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This looks so nice! https://www.audi.co.uk/new-cars/q5/all-new-sq5.html

It sure is

That's what the forum is all about Brad, we're all learning...and in my case remembering! It gets more difficult with age to remember things but as I sometimes say...it's not that I have forgotten, its because I have a larger database to search.

Hi Melissa As Magnet and Brad have both stated, problems with the compressor along with a slight leak from one or both of the front air bags could cause this

Consider upgrading to xenon or bi-xenon from Retrofit Lab: https://www.retrofitlab.com/ You can use your original light housings (no need to replace them), you'll enjoy vastly improved light output, and you'll get the US-style 'flat' cutoffs that are legal in both the UK and Germany (and should pass the MOT/TÜV in either place). (I have nothing to do with Retrofit Lab; am just a happy customer of theirs.)

I was in the same boat, then discovered that there are owners workshop manuals published in Germany that cover the 2.5 TDI and Quattro variants: http://www.originalanleitungen.de/automobilia/audi/audi-a4-s4/audi-a4-b6-b7 Of course, you have to be able to read German

My 2.5 TDI car occasionally misfires at idle, especially when cold and just started up, with no report codes.

Once you've figured out which housings to get, consider upgrading to bi-xenons from Retrofit Lab: https://www.retrofitlab.com/ My car already had the factory bi-xenons so I didn't have to do the retrofit, I just replaced the projectors from ones they supplied at Retrofit. The difference is amazing; with new bulbs (now 3 years old) my 13 year old car can compete with recent Audis and BMWs for light output. Another advantage with the aftermaket bi-xenons I have is that they have the US style 'flat' cut-off, not the EU style slanty one. This means they are legal in both the UK and on the continent. No silly stick-on converters when I drive back and forth, and theoretically the car should pass the MOT in the UK as easily as the TÜV in Germany with no modifications whatsoever. (I can confirm the car did pass the TÜV test in Germany with these new projectors, where the car is registered.)

I have owned a 2003 Quattro Avant 2.5 TDI (180hp) for four years, third owner. Ḷove the car, have done a fair bit of maintenance and upgrades on it. A lot of people recommend staying away from the 2.5 TDI engine (soft cams, timing belt going out), but haven't had any issues with it so far (touch wood). I like the engine's driving characteristics. And it hasn't thrown a code in the four years I've had it, now at 196 k miles. Mainly I have had to deal with worn suspension bits, replacing control arms, that sort of thing. Now the dampers are beginning to go finally and I am looking to replace the entire suspension with a Bilstein B12 Pro kit. I stupidly broke the glovebox hing and the armrest hinge and hard to replace both, watch out for that! Driver door electric went about 3 years ago, had to replace that. Rear wiper seized due to leaking washer fluid, it's common problem, so check for leaks in the tailgate. Any specific questions you might have?

Magnet, love how you go into so much detail, even though I help members out as much as I can, I learn so much from this forum from everyone. very interesting indeed :) that includes you Trevor too. I'm only young (23) so still learning. but learning a lot :D

Haha, got to be careful there Trevor, Might be seeing you in a police chase one day and I will know that you haven't even noticed them XD

I was looking at coilovers mainly just unsure what to go for. On my bora i used AP's and they where good but used ebay specials in the past and not alot of difference if im honest is there any issues when lowering the A4's? And roll bar problem and chassie notches needed? Still toying with wheels at the monemt tho as i cant decide on what to go for. Ive still got my 18inch off my bora there bbs rsii splits but wrong fitment and think too small. My bora was blue and as low as can be on coilovers haha. I might look into removing the back boxes then. Will the cat throw lights up on the dash? Also thought about the DPF and a remap aswel but not sure what the standard clutch will cope with. A couple of pics off the avant 😀 Dan

Hello Melissa, Others more knowledgable on the actual models and specifications will no doubt clarify, but can I take it this has air suspension? If so, my first port of call (noting the vehicle's age) would be the compressor - a small and hard working component for what it has to do. Air suspension compressors are notorious on other marques for wearing out their piston rings and although the system copes, it doesn't have the necessary reserve. Some will point to a new compressor at "oh dear" prices, but these are generally repairable - I can give you a contact fo the parts if I'm barking up the right tree. If the compressor is serviceable then it could be the individual suspension unit, which might be a main dealer part only. Some homework will be necessary, if our Cardiffians pockets are to be respected! Ignore if not air suspension! If it is, then let us know and we might be able to help further. Kind regards, Gareth.

Hi Dan I haven't yet got down to doing my set up (lowering) but i was going for coilovers as they give a good low but not really low depending on what ones you go for and the 19 inch wheels would look very nice! what colour? also I have a stock twin down pipe but If i was to get a aftermarket exhaust I don't know how it would sound, but on yours an aftermarket would sound really nice!, thought of a decat? I can imagine it would work on your B7 ;) Regards Bradley

I too agree with Brad and Trevor's advice with this, but it might be worth considering having this car on a wheels-free ramp and running this through the gears and on and off lock. This might, just might show up something, but I am conscious that this does not replicate an under-load situation. Obviously observe all the safety requirements. Incidentally, who pointed you to a need to change the gearbox? Kind regards, Gareth.

Here is a link to eBay for some body parts.... http://www.audiownersclub.com/parts/ http://www.audiownersclub.com/parts-results/A3-S3/Bonnets--Parts/174046

My 57 2.0 Passat does the same whistle/whine on accelaration and always has done. The amount of times I've looked in the rear view mirror think that their must be police behind me . I've scanned it numerous amount of times with no fault. It has now done nearly 60000 since I've owned it with no problems at all. No loss of power/performance.

Hello Anand, I too would first eliminate the battery as a source of this problem as Trevor says. As I see it, we are still in relatively early days in terms of this stop/start system and how it stands up to years of use. Of course, it should not cut out if the battery charged level is lower than the specified minimum, so perhaps - just perhaps - the battery is not maintaining that level. This system is interesting since it obviously places a far greater demand on the battery and alternator, and although the car's battery fitted on a new car, usually copes well with some c10 years of service, I wonder if there are any statistics available yet to guide us on how long the batteries will last on these stop/start systems. Yours is approaching 4 years old. Any chance it's reaching the end of its service life? If so, how much longer before the starter calls it a day? - and then the alternator? You will gather Stevie that I am not a fan of these systems, and if the above is not enough of an off put, then perhaps we should also consider that the maximum amount of wear on an engine occurs on initial start up! Switch it off and do yourself a favour. Please moderate these comments with the fact that I am old! In fact old enough to be familiar with its pre war predessor, the Startrix system which automatically restarted the car if it stalled. A disaster! Anyway, good luck in getting it fixed. Kind regards, Gareth.

Hello Stevie, Personally I wouldn't get too pessimistic about this - in terms of head gasket failure etc- until we have a bit more detail from you. The only comment I would make is to question the possible diagnosis as being due to a faulty catalytic converter! Still..... What I would want to know is whether the car is losing coolant or not, and if so how much to return it to its original level when cold and how many miles had been travelled. I would also need to know is if this smoke is still present after a 10 mile run on a fine day with the car at standstill and an assistant holding the revs. at a constant 2000rpm. If it is, and its white (if it was oil burning it would be blue) then I would agree that it is likely to be water entering the combustion. Now I'm pre judging your answers here, but if it is losing coolant, and the white smoke is persisant then my first port of call would be to suspect/eliminate the (water heated) inlet manifold gasket - based on the system being flushed, probably with a caustic additive which might have attacked an already failing manifold gasket. Please don't get frightened into head gasket issues until all else has been eliminated. Hope this helps, Kind regards, Gareth.

Sealed the deal lads!! audi a7 3.0 tfsi with a few nice factory extras. Will be picking it up on 28th after which pics will follow. Thanks for your time and direction!!

Thanks Jez for your input to this problem. I have had the car in to the Mercedes BMW Audi specialists in Glasgow over the past two days who I take all my German cars to in the past. They have found the problem now which is in the form of the clutch servo is leaking fluid and has saturated the clutch swith and fried it basically...New servo needed, job lot £600....phew It better last..lol

Hi Stevee Is it white white or white blue? could be a cracked head gasket or oil burning too much. does it still smoke when the engine is warm? Regards Bradley

Hi, didn't realise that year was a V6 sorry. Generally a fabulous car, docile family transport one minute, effortlessly rapid Q car the next. The combination of Quattro and DSG means rapid ground covering is a synch, or popping into gaps on roundabouts with confidence, wet or dry. I'm sure some will say that it's not the last word in driving involvement, but oversteering rear wheel driving is for the track in my opinion. I'd rather overtake a tractor on a damp country lane know that the car is going to grip and go without any concerns over spinning half the power away at the rear wheels. I fancied an RS4 but I can't say I really yearn for any more grunt, not on UK roads anyway. If you're not in the mood, sit back and enjoy sensible running costs, too, it's a great all round package. Mine has done 20,000 miles from new, two services (first an oil change) 250 quid per service, back tyres lasted 20,000 miles, fronts 14,000. Tax about 230 quid per year.... all surprisingly reasonable IMO. Downsides. Mine's very glitchy. So far, failed headlamp washers, failed daylight running lights, shrieking brakes (for nearly 6 months, dealer says nothing can be done about it), washer reservoir that dumps its contents on the drive, luggage blind fails to lock in properly. Annoying as otherwise it's all the car you need. And it doesn't shout about its performance, suits me. Shame it has weird V6T badges rather than the 'Supercharged' badges that the USA counterparts have...