I HAD THE CHECK ENGINE LIGHT ON AND TOOK IT TO THE DEALER. HE SAID THERE WAS PROBLEM WITH COMBI VALVE, VACUUM HOSE AND SECONDARY AIR PUMP WHICH COSTS A TOTAL OF >1200$ IN TOTAL. LUCKILY, I HAD THE EXTENDED WARRANTY AND I HAVE TO PAY 700$. THE CAR IS 2002 VW PASSAT GLS (1.8) AND HAVE ONLY 40K ON IT. THIS IS THE SECOND MAJOR REPAIR AND THE PREVIOUS ONE WAS SOME KIND OF CV JOINT ISSUE. ALL THIS PROBLEMS SEEMS TO BE A COMMON PROBLEM FOR ALL PASSAT OWNERS AND I WONDER WHY THERE IS NOT EVEN A RECALL FOR THIS. MAY BE THEY KNOW THIS PROBLEM AND WANT PEOPLE TO GO AND PAY MONEY. ONE THING IS SURE. THIS WILL BE MY FIRST AND LAST VW. I DON'T RECOMMEND ANY ONE TO BUY VW, BUT BETTER BUY CHEAP JAPANESE CARS LIKE MITSUBHISHI WHICH RUNS FOR YEARS AND YEARS WITHOUT ANY PROBLEM. *JB