i've had this car s4 (b9) 5 months now from new i have few issues if anyone car help
when engine cold it rattles like a tractor (the wife says) when i believe the oil pressure is up it goes quite. it will do this even when warm on start up
also hen the auto start/stop operates i have the same problem the engine rattles before the oil pressure bulids up.
the only way i can describe it is like the oil pump has no oil the filter dransthe oil and if fitted the hydrulic lifters lose the oil pressure.
it has been back to the dealer 2 weeks after having it they had it for a day and half and then said they couldn't fine the fault and have contacted AUDI tectnal they have said there is an issue with a few cars but don't know what causing it.
spoke to the dealer last week and they checked the system and told that there was no fix yet.
i have contacted Audi uk about it the the "brand liasion manager" replied that it was normal for them to do that?
any advice/help would be appreacited really like the car and the power