I bought this car 2 years ago, I changed the engine oil evry 6000 miles (Ravenol) - gearbox oil change (shift perfectly) - used only shell V-Power Diesel - upgrade to S6 brakes - front wheels bearings changed (SKF) - new genuine audi gloss black wheel centre - new headlight xenon bulbs (OSRAM Xenarc Night Breaker Laser NextGen D3S +220% Brighter) - new fog light (hella) with foil protection applied and OSRAM Night Breaker bulbs H11 200% more light - new battery (varta) - all springs changed (eibach pro-kit) The car is in very good condition, all 5 alloy wheels professionaly refurbished (Alloy Fix Dartford) new michelin pilot sport 4s, including the spare wheel. No need to invest anything in this car for the next few years.