I have owned a 56 plate Audi for 10 months. Unfortunately a lady crashed into the car when stationery (on the 6th June 2012) and this resulted in car requiring repairs to the front passenger side bumper and light.

Upon collection of my car from Arnold Clark, who are the approved repair garage of my insurance company Aviva, on the 25th June I arrived to be informed that my car had a "major engine fault, with no oil pressure and no brake pressure" and would be required to be taken to the local Audi dealership to be diagnosed.

The manager at Arnold Clark also advised me that this would be an "extremely expensive bill" as this was not connected to the accident. Subsequently I requested an engineers report to be completed by my insurance company to check this was not connected to the accident.

The engineer contacted me a week later to advise that Audi had looked at the vehicle and the oil pump drive shaft had worn which had resulted in the damage to the engine and this required replacement along with the turbo charge.

I contacted the Audi dealership to be advised the ,cost of the necessary work would be £3160! I could not believe after purchasing an Audi that I was facing such a horrific bill which you can ubderstand left me shocked and stunned. When I purchased the car on the 5th August 2011 from Tyneside Autoparc I received a 12 month warranty through Momentum Warranty.

I contacted Andy within the team and after a number of hours he rang me back to explain that the part was not covered as it was worn and only covers sudden failures!

I was not happy with this and escalated my complaint to the managing director who wrote back to say exactly the same and that subsequent damage (turbocharger) was not covered either so the warranty isn't worth the paper it is written on. I then researched the internet to find forums about the part failure on the make and model of my car and there are 100's on people who have had the same issue.

There is an article in Audi Performance by Ben Williams under "Technical View" all about this fault. I contacted Audi UK on the 2nd July as I was unhappy with the fact that there is a known fault within that year and make of model. I was advised by Hassan on the telephone that as my car was 6 years old and higher mileage 100K that I should lower my expectations and things do go wrong with cars of this age.

There is no known fault with my car and basically I would have to pay the fee. I was unhappy with this explanation as I had pages and pages of evidence to show that other people had the same issue as me, the drive shaft only has to be worn by 0.5mm for it to stop working and there is no warning signs once this fails it is too late and the damage is done.

I told Hassan that I wanted my complaint escalated as I was not happy with this explanation there is too much literature out there to corroborate there was an issue with that engine. I was escalated to a case advisor who contacted me the follwong day. Kelly again advised me that my car was older and with higher mileage so I needed to lower my expectations. My repsonse again is that I paid a lot of money for the car and I would expect this to last longer than 6 years and 100k miles.

I had just parted with a 97 BMW 328IS Coupe which had 150k miles on the clock and I had never encountered any such issues with this. Kelly explained that Audi so offer "goodwill gestures" to people who purchase through their dealerships and who spend money with them i.e. services etc so she could not promise anything and would come back to me.

My partner had to take my V5 document into the Audi dealership to prove I was the registered owner. Upon doing so he was told by Curtis that the price would now be £1794 which included a new oil pump drive and turbo charger (£900), new cam belt and water pump (£595) and service (£299). On the internet it also states that there is a back order on the parts of around 4 weeks (and there is still no known fault as far as Audi are concerned?!).

My partner advised Curtis about the known delay to which he responded the computer would flag up if any known delays to parts and this was not the case. We had already replaced the cam belt and water pump so Audi required the documentation to verify this. Once they had received this they took this item of work off the onvoice and we authorised the necessary works to go ahead. I was still not happy with the fact we are still ahving to pay £900 for parts within the engine which would never be checked.

I struggle with the fact that the original invoice of £3160 was reduced through goodwill to £900 but there is no fault on the engine? We were advised that the car would be ready around the 12th July for collection however on the 11th July my partner was contacted to be told there was a delay with the parts even though when this was pointed out we were told this was not the case.

This week I have been told by Kelly the case manager that the ETA for part is 27th July and then Curtis at the garage emailed to say they were 60% certain the part would arrive on the 24th July.

This has been such a stressful time and I have written numerous letters of complaint to my insurers, Arnold Clark, Audi UK, Momentum Warranties to which no one gives you a straight answer and just fobs you off. Please can you give me any advice as I am at the end of my tether and still facing a substantial bill for a part I am unable to ensure is working as this would never be checked within the services etc.