Hi Scotty, I have a 2015 Nissan Altima Ti-S sedan with 78000kms. I bought it from a Nissan dealership who had indicated that it had been through their workshop. We bought the vehicle from them when it had only 64000kms back in 2019 and we were told that they had just serviced it. We bought the vehicle from them after some Scotty like negotiations, and from their ticket price of $19990AUD, got it for $15500AUD. Within a few weeks my wife was concerned with sound’s the car was making and how it was changing gears. We contacted the dealership and they assessed the car and indicated it needed a new transmission! Fortunately enough it was covered under the car warranty, which supposedly cost $11000! Happy that this was discovered under warranty, we thought that we would then have trouble free driving. Whilst waiting 9 weeks for the transmission to be replaced, we noticed that the supposed service the car was claimed to have, in the log books had been written ‘service cancelled’. I spoke to the service advisor and they supposedly checked and indicated that this was done in error, so he liquidpaper erased the writing in the book. We finally got our car back from the workshop and I took the car in to a rim repair shop to get the rims rash repaired. On completion of the repair the repair shop told me that he could not legally put back on the tyres I have, as they had cracks on the side walls and he informed us that they were 2013 tyres! This was on a 2015 manufactured vehicle!!! I contacted the dealership and after several months of trying to get a resolution they agreed to replace the tyres with some cheap Chinese brand, which I asked to get the cost of forwarded to my tyre shop to get descent tyres installed at an extra cost of $500 over the cheap Chinese tyres they were providing. During this process we discovered the vehicle had no Australia Compliance plate. I went back to the dealership and was told that the manufacturer needed to be contacted for the replacement, and 9 months later I am still waiting for the plate. In the meantime we had booked the car into a reputable mechanical repair shop to have a service, as we had lost confidence in the the dealership we purchased the car from. Days prior, my wife drove the car and discovered clouds of  blue/grey/white smoke coming from the exhaust pipes and the car engine light coming on. I told her to shut down the engine and contacted our breakdown service provider to attend and view the car. His assessment was a possible PCV value, so I got it towed to the repair we had booked in for a service. He viewed the vehicle and he took off the oil cap and discovered a huge amount of sludge. So much so, that he doubts the car was ever serviced. He toke pictures of this sludge on the cap and the sludge opening to fill, which he confirmed that there was no way tbis. He then checked the PCV valve and that appeared to be operating correctly. Reluctantly, he added two tins of sludge remover to the engine and said to pray that this would fix the problem, as the only other solution was for an engine rebuild. Unfortunately the car still blew smoke, and shortly after the engine light came on with a engine misfire code. He charged all the platinum spark plugs (which I have kept) a call around to colleagues to see if they had any idea of how to remedy this issue. He got a call from Bill Lee (who is a reputable performance mechanic) who indicated to try a combination of oil and desiel to clean the sludge. This appeared to slightly lower the amount of smoke blowing from the exhaust, but soon later the engine light came on with a code for the catalytic converter! It had also lost most of the new oil replaced into the engine! I had it towed back to my mechanic, who indicated I should maybe go to Comsumer Affairs, given the current situation with the vehicle and the questionable claims on purchase of the servicing. Do you have any further ideas on how we can fix our car, as I really don’t want to go down an endless and fruitless route with Consumer Affairs and the dealership???