2015 Infiniti QX50Recalls, problems, MPG & safety
NHTSA lists 0 safety recalls and 3 owner complaints for the 2015 Infiniti QX50. Most complaints involve power train (1) and exterior lighting (1). The EPA rates it 20 mpg combined.
Safety recalls
Owner complaints by component
- Power train1
- Exterior lighting1
- Engine1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
What owners report most
Power train
“The contact owns a 2015 Infiniti QX50. The contact stated while driving at an undisclosed speed, there was an abnormal sound coming from underneath the vehicle. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The vehicle was then taken to an independent mechanic, who confirmed the diagnosis. The vehicle was repaired, but the failure reoccurred. The manufacturer was not notified of the failure. The failure mileage was 46,000.”
Exterior lighting
“TL* THE CONTACT OWNS A 2015 INFINITI QX50. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE AUTO DIMMING FEATURE WAS FRACTURED CAUSING IT TO BE VERY DIFFICULT TO SEE AT NIGHT. THE FAILURE OCCURRED MULTIPLE TIMES. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE AUTO DIMMING SWITCH NEEDED TO REPLACED. THE VEHICLE WAS REPAIRED BUT THE FAILURE OCCURRED MULTIPLE TIMES. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 78. THE VIN WAS NOT AVAILABLE.”
Engine
“THE CAR STARTED NORMALLY AND AFTER DRIVING ABOUT A QUARTER OF A MILE I WAS SUDDENLY COASTING WITHOUT POWER. THE ENGINE JUST QUIT. WITHOUT POWER STEERING AND BRAKES I WAS STILL ABLE TO GUIDE IT TO THE CURB AND COME TO A SAFE STOP. WHAT I ATTEMPTED TO RESTART THE CAR IT ACTED AS IF THE BATTERY DIDN'T HAVE ENOUGH POWER TO TURN OVER THE ENGINE, ALTHOUGH LIGHTS, HORN AND RADIO STILL WORKED FINE. THE CAR WAS TOWED TO THE DEALER WHERE I BOUGHT IT AND AFTER WEEK OF UNSUCCESSFUL TROUBLESHOOTING THE INFINITI REPS GOT INVOLVED. WHEN THE OIL PAN WAS REMOVED THEY FOUND NUMEROUS PIECES OF METAL OF VARYING SIZES AS IF SOMETHING IN THE ENGINE HAD DISINTEGRATED. IF THEY KNOW WHAT CAUSED IT THEY HAVEN;T TOLD ME, AND I SINCE I HAD LEASED IT JUST TWO WEEKS PRIOR I'VE ASKED FOR A NEW VEHICLE RATHER THAN TO HAVE THE ENGINE IN THIS ONE REPLACED. AS OF TODAY, NEARLY 2 WEEKS AFTER THE INCIDENT, I AM STILL AWAITING A DECISION. LUCKILY I WAS ON A SIDE STREET WHEN THIS OCCURRED. HAD IT HAPPENED MINUTES LATER I WOULD HAVE BEEN ON A HIGH SPEED MULTI-LANE INTERSTATE HIGHWAY AND THE RESULTS COULD HAVE BEEN CATASTROPHIC. *TR”
Engines, transmissions & drive
- EPA class
- Small Station Wagons
- Engines
- 3.7L 6-cyl
- Transmissions
- Automatic (S7)
- Drive
- Rear-Wheel Drive · All-Wheel Drive
- Fuel
- Premium Gasoline
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
EPA fuel economy by version
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| QX50 Auto (S7), 6 cyl, 3.7 L · Rear-Wheel Drive | 17 | 25 | 20 | $3,850 | 450 |
| QX50 AWD Auto (S7), 6 cyl, 3.7 L · All-Wheel Drive | 17 | 24 | 20 | $3,850 | 448 |
- 20mpg comb.
- 20mpg comb.
NHTSA 5-Star Safety Ratings
Maintenance basics
| 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 |
- Engine oil & filter5,000–10,000 mi
6–12 months - Tire rotation5,000–7,500 mi
Every oil change - Engine air filter15,000–30,000 mi
1–2 years - Cabin air filter15,000–25,000 mi
1–2 years - Brake fluid—
2–3 years - Coolant60,000–100,000 mi
5–10 years - Spark plugs60,000–100,000 mi
— - 12V battery—
3–5 years
2015 QX50 questions
How many recalls does the 2015 Infiniti QX50 have?
0 recalls found in NHTSA data as of Nov 7, 2026.
What are the most common 2015 Infiniti QX50 problems?
Owners filed 3 complaints with NHTSA. The most-cited components are power train (1), exterior lighting (1), engine (1). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
What MPG does the 2015 Infiniti QX50 get?
The EPA rates the 2015 Infiniti QX50 at 20 mpg combined, depending on engine and drivetrain (2 versions rated).