THIS CAR HAS BEEN TAKEN IN 3 TIMES NOW FOR THE SAME ISSUES. ENGINE LIGHT CAME ON AND SMELL OF EXHAUST IN CABIN. THIS SMELL STARTED AT AROUND 30,000 MILES, BUT AT THAT TIME IT WAS MINOR, AND WOULD GO AWAY QUICKLY. EXHAUST FILTER CLEANED AT COST OF $400. NEXT DAY THE ENGINE LIGHT AND EXHAUST SMELL STILL THERE. DIESEL EXHAUST RESERVOIR AND HEATER REPLACED (THIS WAS A RECALL FOR SOME OF THE SAME CARS, BUT NOT MY VIN). COST OF THIS REPAIR $1,300. FIVE DAYS LATER CAR TAKEN BACK TO DEALER WITH SMELL OF EXHAUST DURING COLD STARTS WAS EXTREME IN CABIN. EXHAUST LEVELS MEASURED AND CARBON MONONXIDE IN CABIN AT DANGEROUS LEVELS. DEALER SAYS THERE ARE LEAKS IN THE EXHAUST AT THE ENGINE AND THE COST WILL BE AROUND 1,100. LOOKING AT POSTINGS ON THE INTERNET, IT APPEARS THERE HAVE BEEN MANY ISSUES WITH EXHAUST IN THE CABIN , AND WITH THE EXHAUST FLUID HEATER, AND OR COOLER MALFUNCTIONS. THERE APPEARS TO BE A FEW RECALLS ON THE SAME YEAR AND MODEL CAR EXHAUST AND EXHAUST FLUID COMPONENTS, BUT NONE ON MY VIN. THIS IS A HIGHLY DANGEROUS SITUATION AS THE LEVELS OF EXHAUST IN THE CABIN IS AT A DEADLY LEVEL. THIS EXHAUST LEVEL HAS BEEN HIGH ENOUGH TO MAKE ME SICK. THIS NEEDS TO BE ADDRESSED ASAP. *TR