Home · 2015 Porsche Cayenne Coupe · Complaints
These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.
2 of 13 complaints match · Fuel system · clear filters
AFTER LEAVING THE DEALERSHIP FROM RE-CALL REPAIRS, OUR CAR SHUT OFF ON US IN THE BUSY 5:00 PM AUSTIN TRAFFIC. IT WAS SCARY & DANGEROUS. PORSCHE EMPLOYEES STEVE & AMY HELPED US WITH TOWING TO THE DEALERSHIP AND PROVIDED A LOANER VEHICLE FOR MY HUSBAND & I TO TRAVEL BACK TO VICTORIA COUNTY WHILE OUR CAR GET SERVICED. I REACHED OUT TO ARIELLE VAUGHN, CUSTOMER EXPERIENCE MANAGER, BUT I STILL DON'T KNOW WHAT WENT WRONG OR WHAT IS GOING ON WITH OUR CAR.
NHTSA ODI 11151396
PORSCHE CARS NORTH AMERICA AS PART OF THE EPA/CARB SETTLEMENT MODIFIED THE 2015 CAYENNE IN A MANNER TO COMPLY WITH THE ORIGINAL EMISSIONS REQUIREMENTS. THE MODIFICATION HAS SIGNIFICANTLY AFFECTED PERFORMANCE I SUCH A WAY THAT THE VEHICLE IS NOW DANGEROUS IN CERTAIN SITUATIONS. WHEN MERGING ONTO HIGHWAYS OR ATTEMPTING TO OVERTAKE THERE IS A SIGNIFICANT LACK OF RESPONSE TO THROTTLE INPUT LEADING TO NEAR MISSES BY OTHER VEHICLES. THIS HAS BECOME MORE PRONOUNCED AS THE MODIFICATIONS HAVE HAD TIME TO ADAPT OVER TIME. PORSCHE HAS CONTINUED TO DENY AN ISSUE AND STATES THE VEHICLE IS OPERATING AS DESIGNED AFTER THE MODIFICATION. THIS SUMS UP OUR EXPERIENCE WITH THIS VEHICLE, IT IS TO THE POINT THAT IT IS UNSAFE AND DANGEROUS TO DRIVE
NHTSA ODI 11105297
Working with the data? Download all 13 complaints as CSV · fetched from NHTSA July 14, 2026