NHTSA Complaint #11711026 — 2016 MERCEDES-BENZ GLA 250

I am reporting a P052E fault code related to the crankcase ventilation system on my Mercedes-Benz GLA. This is a known and widespread defect on multiple Mercedes-Benz models and is commonly covered under service bulletins and extended warranties up to 150,000 miles. My vehicle has 92,000 miles. However, Mercedes-Benz has refused coverage, stating that the GLA model is not included, despite extensive evidence that this same defect affects GLA vehicles. Numerous documented owner reports and forum discussions confirm identical failures on GLA models. This appears to be a systemic defect rather than normal wear. I am requesting that NHTSA investigate this issue and require Mercedes-Benz to extend coverage and assume responsibility for repairs on affected GLA vehicles.