NHTSA lists 1 safety recall and 8 owner complaints for the 2012 Hyundai Equus. Most complaints involve power train (4) and engine (3). The EPA rates it 18 mpg combined.
Hyundai Motor America (Hyundai) is recalling certain model year 2012 Genesis vehicles manufactured August 1, 2011, to April 30, 2012, and 2011-2013 Equus vehicles manufactured July 10, 2011, to June 12, 2012. The windshield wiper motor cover seal on the affected vehicles may degrade allowing corrosion on the wiper motor's circuit board. The corrosion can cause intermittent or total loss of wiper function.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
“I am writing to log an immediate emergency update to my vehicle safety report regarding my 2012 Hyundai Equus Signature 5.0L. On Friday afternoon, July 10, 2026, Hyundai Motor America’s corporate office formally initiated a high-level Tier-2 supervisor review to investigate the severe powertrain safety hazard currently present on my vehicle—specifically, a catastrophic internal rupture of the transmission fluid cooler loop that has cross-contaminated and flooded my engine block infrastructure and main radiator with high-velocity metallic shrapnel. However, today, Saturday, July 11, 2026, the servicing franchise dealership, Patrick Hyundai, issued an immediate verbal denial of all goodwill repair or safety inspection coverage. This premature weekend denial represents a blatant, bad-faith attempt by a localized franchise to circumvent an active manufacturer safety audit. By issuing a verbal denial while corporate offices are closed, the dealership is attempting to apply high pressure to force me to immediately tow this severely compromised, non-driveable vehicle off their property. This action is designed solely to force the removal and destruction of critical,…”
“I am reporting a severe vehicle safety hazard involving a sudden loss of motive power and extreme thermal failure on my 2012 Hyundai Equus Signature 5.0L. In July 2022, at 88,845 miles, an authorized Hyundai dealership replaced the transmission under a factory warranty event. Rather than replacing the transmission oil cooler assembly—which was contaminated with heavy metal shrapnel from the original mechanical breakdown—the servicing dealer chose to only flush the lines, creating a latent fluid restriction. After approximately 18,000 miles of operation, this restriction completely choked the transmission fluid pressure loop. The extreme thermal stress and back-pressure caused the internal walls of the transmission cooler to suffer a catastrophic structural rupture. This caused the transmission to suddenly overheat and fail while driving, creating an immediate highway safety risk and a total loss of vehicle control. Furthermore, the internal rupture of the cooler walls has caused direct fluid cross-contamination ('SMOD'), forcing transmission fluid and metallic shrapnel directly into the engine's main radiator and cooling passages. This metal shrapnel is…”
“FROM THE DESK OF LMI'S EXECUTIVE DIRECTOR: [XXX] I PURCHASED 2012 EQUUS ON MARCH 7, 2012 WITH 108,216 MILES. THE CARS SUSPENSION STARTED GOING BAD AS OF LAST WEEK. I BROUGHT THE CAR BACK ON MARCH 20, 2020 TO HAVE A MIRROR REPLACED AND TO DISCUSS THE SUSPENSION PROBLEM. IT?S BEEN OVER A WEEK AND TODAY THEM AFTER A 45 MINUTE DRIVE I WAS TOLD THEY HAD THE WRONG MIRROR...EVEN THOUGH I SPOKE WITH THE SERVICE PERSON ([XXX]) AND HE ASSURED ME EVERYTHING WAS IN ORDER AND HE EVEN SCHEDULED AN APPOINTMENT FOR THEM TO REPLACE THE MIRROR. WHILE I WAS THERE I SHOWED [XXX] THE SUSPENSION AND I WAS REFERRED TO THE SALES MANAGER. TALK TO THE SALES MANAGER AND HE SHOWED NO CONCERN...THE SALES MANAGER GAVE ME A LOOK LIKE, SO WHAT DO YOU WANT ME TO DO ABOUT IT. I STATED MY CONCERN AND THAT I'VE ONLY DRIVEN THIS VEHICLE 590 MILES (TO WORK AND HOME) SINCE I PURCHASED IT AND THE SUSPENSION SHOULD NOT BE ACTING UP ALREADY. I COULD SEE IF I HAD THE VEHICLE FOR SOME MONTHS BUT I HAD IT ROUGHLY FOR ABOUT TWO WEEKS. AGAIN, HE SHOWED NO CONCERN AND RESTATED THE "AS IS" POLICY. I UNDERSTAND THE "AS IS" PART AND I ADMIT I DID SIGN THE DOCUMENT BUT THE VEHICLE SEEMED FINE AT THE TIME OF…”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Equus Auto 8-spd, 8 cyl, 5.0 L · Rear-Wheel Drive | 15 | 23 | 18 | $4,300 | 494 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
1 safety recall as of Nov 8, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 8 complaints with NHTSA. The most-cited components are power train (4), engine (3), suspension (2). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2012 Hyundai Equus at 18 mpg combined, depending on engine and drivetrain (1 version rated).