2016 Volkswagen Golf Engine

GFF TEST PLAN ON STORED ENGINE LIGHT. RECOMMEND REPLACING THERMOSTAT HOUSING CAUSING THE CHECK ENGINE LIGHT. RECOMMNED REPLACE THERMOSTAT HOUSING. SEEP/SLIGHT COOLING LEAK. ADVISED TO WATCH COOLANT LEVELS UNTIL FIXED.

Thermostat and Gasket repair quoted by VW dealership. The coolant is leaking according to their inspection. Car could malfunction unexpectedly and leave me stranded as a road hazard Many more claims in this thread. They quote $1,600 to repair. https://www.reddit.com/r/GolfGTI/comments/drna5m/mk775_thermostat_housing_issue_and_coolant_loss/

Dealer found thermostat housing leak and recommended housing and pump replacement at a cost of over $2K. Thermostat is housing leak could cause loss of coolant which could strand you in the middle of the road. There were no warning lamps active. This appears to be a common issue with these vehicles. The thermostat should not be having problems like this at this mileage. The component has not been inspected by insurance, manufacturer, or police, only the dealer.

The vehicle overheated during normal driving. The car advised the driver to stop immediately. The car was inspected later the same day by a VW dealer service department that determined the water pump and thermostat housing required replacement. Estimated cost is $1400.

Water Pump Failed twice

EPC light comes on whenever turbo is engages, loss of power (no turbo). EPC light goes off when car is restarted, back on after a few minutes of driving. Error codes indicate turbo issues. Vehicle has 40K odometer mikes. Chat forums have numerous similar reports from other owners. Seems to be a known turbo issue with early MK7 GTIs

At 49,086, our 2016 Volkswagen Golf developed a leak in the thermostat assembly housing. The Volkswagen dealership, Elk Grove Volkswagen in Elk Grove, CA, strongly recommended the replacement of the thermostat assembly housing which included replacement of the thermostat assembly housing, the thermostat itself, a gasket, the replacement of the coolant. Failure to do so would result in the engine overheating and potential damage to the engine. Looking quickly online, I found several forums which discussed this specific problem: https://www.vwvortex.com/threads/thermostat-housing-leaking-again-after-recall-done-in-2018.9458318/ https://www.golfmk7.com/forums/index.php?threads/failed-thermostat-housing-coolant-loss-info-gathering.368847/ A low coolant warning light was on, however there were no visable leaks underneath the car. The following is a ibetter description of the problem, taken from the golfmk7 website: “Coolant will slowly seep out of a weep hole on the underside of the thermostat housing. It doesn't seem to be enough to ever leave a puddle but slight residue may be seen under the thermostat housing and possibly on the oil pan. The loss of coolant often trips the low coolant warning if the level isn't maintained. Depending on the size of the leak, the coolant drop can either be gradual or catastrophic. Loss of coolant has also been linked to the water pump failing. Furthermore, the accessory bracket gasket can leak hot oil down onto the thermostat housing (even after repair) which can cause failure.“ The service was completed today, 02/16/2022.

2016 VW GOLF GTI MK7 ENGINE COOLANT BEGAN TO SLOWLY LEAK FROM THERMOSTAT HOUSING SEAL AT 25,000 MILES. DEALER REPLACED HOUSING WITH REV M PART JUST BEFORE MY WARRANTY EXPIRED. HAS THIS EVERY 25K MILE PROBLEM BEEN RESOLVED YET?

The thermostat housing and water pump are leaking due to a known manufacturing defect. I had the water pump and thermostat housing replaced around 65,000 miles from an independent Volkswagen mechanic. He informed me that it appears the water pump had been replaced prior to my ownership of the vehicle. (41,000 miles). Again, I have to replace the thermostat housing and water pump, for a leak. The failure causes a leak in the pressurized cooling system. The leak is small while parked so there is no noticeable puddle but as the system warms up, the leak happens faster. Because of this issue, I have had multiple warning messages while driving, low coolant level, check engine light, and EPC (Electronic Power Control, which disables activate cruise control and front collision detection systems). On multiple occasions, I was stranded waiting on help because of the failure. As stated, this is a known issue from the manufacturer, as they have had at least 7 revisions to the part. The manufacturer is currently on revision “M”, I am only aware of revisions “F, G, H, J, K, L” and the current revision “M”. As previously stated, this is the second time I personally have had to pay out of pocket for this repair.

CONSUMING OIL

ENGINE MISFIRED AND CAUSE THE CAR TO STUTTER WITH LOSS OF PERFORMANCE. THIS HAPPENED TO ME WHEN MAKING A LEFT HAND TURN NEARLY CAUSING AN ACCIDENT BECAUSE THE CAR WAS NOT MOVING AT THE NORMAL SPEED DUE TO LOSS OF PERFORMANCE. THIS IS THE 3RD TIME THE ENGINE HAS MISFIRED SINCE I BOUGHT THE CAR. IT HAS LESS THAN 2,800 MILES ON IT.