MY BMW IS A 645i. AFTER 18 MONTHS OF PROBLEMS WITH THE ENTERTAINMENT SYSTEM[CD'S SILENTLY CONTINUE TO PLAY AFTER ENGINE IS SHUT OFF] AND TELEPHONE AND BLUETOOTH DON'T WORK PROPERLY. ALSO ENTERTAINMENT WILL RANDOMLY CHANGE FROM ONE TO ANOTHER, LIKE CD TO FM RADIO. DEALER AT TIME OF SALE SAID BMW USUALLY FIXES PROBLEMS WITH THE COMPUTER IN 60-90 DAYS. EMAILS FROM ME TO DEALER AND BMW NORTHAMERICA WERE NOT RESPONDED TO WITHOUT MY INSISTANCE. IN MAY 2006, MY CAR HAD 8500 MILES STILL.. NOT FIXED SO I WROTE A 'LEMON LAW' LETTER. UNDER THE LEMON LAW, IF A VEHICLE HAS A PROBLEM THAT SUBSTANTIALLY IMPAIRS ITS VALUE, THE MANUFACTURER MUST EITHER A. OFFER A REPLACEMENT VEHICLE OR B. REPURCHASE THE VEHICLE. BMW NORTHAMERICA SAID THEIR ENGINEERS WOULD AGAIN LOOK AT CAR..THEY DID IN JUNE 2006, AND THEN THE MANAGER OF DEALERSHIP ADVISED I COULD NOT GET A REPLACEMENT VEHICLE AS A REMEDY BECAUSE THE SIX SERIES HAVE PROBLEMS AND THEY COULD NOT GUARANTEE THE NEW REPLACEMENT WOULD BE FREE OF PROBLEMS. A FRIEND OF MINE WITH A NEW 650 ALSO HAS PROBLEMS WITH THE ON BOARD COMPUTER ENTERTAINMENT THAT HAS NOT BEEN RESOLVED. I THINK IT IS FAIR TO SAY THE SIX SERIES HAS A PROBLEM WITH NO FORESEEABLE FIX. THEY OFFERED TO BUY ME OUT OF THE CAR PER LEMON LAW OR GIVE ME $9500 COMPENSATION. I AGREED TO A BUY OUT ....but A FEW DAYS LATER I WAS TOLD THAT IN EXCHANGE FOR BUYING ME OUT THEY INFORMED ME THAT BMW NORTHAMERICA IS INSISTING I SIGN A RELEASE AND A CLAUSE THAT I WILL NOT DISCLOSE TO ANY ONE THE NATURE OF THE PROBLEM. I THINK EVERY BUYER OF THE SIX SERIES, A $75,000 CAR SHOULD KNOW. BMW NORTHAMERICA WANTS TO KEEP THIS A SECRET APPARENTLY. I AM EMAILING THIS COMPLAINT BEFORE I SIGN THE 'NON DISCLOSURE' BECAUSE I THINK OTHER OWNERS SHOULD BE ADVISED OF A POTENTIAL DEFECT THAT COULD IMPAIR THE VEHICLE'S VALUE.