2007 LEXUS IS 250 Power Train Problems

THE TRANSMISSION SLIPS ON REVERSE. IT DOES NOT TRAVERSE UNLESS I DRIVEN 30 MINUTES AND GOING 40 AMD HIGHER, THE RPMS START AT 4K THEN 5K AMD KEEPS GETTING HIGHER. THE ENGINES WANTS TO STALL FROM TIME TO TIME. THE SUSPENSION IS HARD, EVEN AFTER CHANGING THE SHOCKS

I PURCHASED A CPO LEXUS IS250 IN 2008, I HAD INTERMITTENT HEADLIGHT FAILURE BROUGH CAR INTO LEXUS AND WAS TOLD THEY COULDNT REPRODUCE THE PROBLEM. PICKED MY CAR UP BROUGHT IT HOME AND SURE ENOUGH THE HEADLIGHT IS OUT. CALLED LEXUS IMMEDIATELY SENT A PICTURE OF THE LIGHT OUT. BROUGHT CAR BACK IN THEY SWITCHED THE HEADLIGHT AND OF COURSE THE LIGHT ON THE SAME SIDE WENT OUT AGAIN. I WAS VERY FRISTRATED BECAUSE AS A FEMALE AND KNOWING WARRANTY WAS UP SOON I FEEL THEY DIDNT CARE. THE LIGHT WENT OUT AGAIN AND HAPPENS EVERY DAY I HAD BULBS REPLACED AND PROBLEM STILL HAPPENS. I HAVE BEEN TICKETED FOR LIGHT FLICKERING AND GOING OUT. DRIVING ON HIGHWAY AT 65MPJ, CHECK ENGINE AND CHECK VSC LIGHT GO ON, CAR DROPS POWER AND DOWNSHIFTS VERY HARD, I DROP TO 40 MPH IN THE LEFT LANE OF HIGHWAY. CHECK VSC AND CHECK...

CHECK ENGINE, VSC, TRACTION LIGHTS COMES ON AS VEHICLE COMES TO A STOP WITH A ROUGH IDLE, AND AT TIMES EXHIBITS A TEMPORARY LOSS OF POWER INTERMITTENTLY, WHILE THE VEHICLE IS MOBILE/ROLLING. LEXUS SENT OUT A TSIB LETTER TO US OWNERS FOR SIMILAR SYMPTOMS WITH POSSIBLE DIAGNOSTIC TROUBLE CODES(DTC): P0300-P0306. FURTHER, ACCORDING TO LEXUS CORP. "THE CHECK ENGINE LIGHT MAY ILLUMINATE FOR REASONS OF UNRELATED CONDITION." LEXUS CORPORATION SUSPECTS THE CAUSE OF PROBLEM IS CARBON DEPOSIT ACCUMULATION IN THE INTAKE VALVES AND A REPLACEMENT OF PISTON RING SET AND OR PISTONS MAY BE INDICATED. IF THIS IS WHAT'S OCCURRING INSIDE THE ENGINE AND IS INHERENT TO IS250 MODELS ONLY ,THEN IT WOULD SEEM TO A REASONABLE PERSON THERE IS A DESIGN AND POTENTIAL SAFETY FLAW IN THESE VEHICLE MODELS. ALSO, BECAUSE OF THIS DESIGN FLAW, MY VEHICLE IS NOW HAVING CATALYTIC FAILURE AND A WHAT SOUNDS LIKE A RATTLE DURING...