Nissan Armada fuel smell problems

Filed Oct 23, 2026 · Engine · NC

I was driving my kids to school in my 2014 Nissan Armada when I suddenly started feeling lightheaded and dizzy out of nowhere. I realized something was terribly wrong and immediately rolled all the windows down. Thank God I did. ​When I got home, I opened the hood and looked underneath the truck to see if exhaust was leaking. I sprayed soapy water on the visible seams of the exhaust manifold and catalytic converter, turned the truck back on, and saw air bubbles immediately forming right around the welded areas. I recorded the whole thing on video as proof. ​The Big Issue: HOW are these exhaust fumes able to get inside the cabin with me and my kids?! I didn’t get a single warning light on my dashboard—NOTHING! I’ve owned other vehicles with catalytic converter issues before and exhaust fumes NEVER came inside the vehicle like this. ​The cracked weld on the manifold is leaking fumes right into the engine bay, and the AC/heater vents at the windshield are sucking those toxic fumes straight into my vehicle! ​Safety Concern: This is a massive safety hazard. Carbon monoxide in the cabin can kill someone or make a driver pass out at the wheel. I am getting my Armada professionally inspected and fixed, but I am reporting this because Nissan needs to warn parents and drivers about this issue before somebody dies!

Filed Oct 21, 2026 · Fuel system · 93,000 miles · TX

The contact owns a 2018 Nissan Armada. The contact stated that while the vehicle was parked, there was a strong fuel odor near the rear of the vehicle. The vehicle was taken to the dealer, and it was determined that the fuel pump was fractured. The failure mileage was approximately 93,000.

Filed Sep 11, 2026 · Fuel system · NV

My car suffers from unresolved safety, hazard of intermittent gasoline fumes. The vehicle exhibits a strong intermittent smell of gasoline, fumes outside and inside of the cabin, creating an immediate health and safety risk for anyone inside the vehicle or near the vehicle. I have been dealing with a lot of nausea and headache headaches. Despite multiple repair attempts by authorized dealership technicians to resolve this issue, the defect remains completely unresolved. The gasoline smell continues to return unpredictably. The manufacturer is fully aware of this ongoing safety defect, however, rather than taking the vehicle back or terminating the lease of an unsafe car, the manufacturer offered a monetary settlement to keep and drive the vehicle for the remaining two years of the lease duration. Accept accepting cash compensation does not repair a vehicle or eliminate a known chemical hazard. Driving a car with reoccurring gasoline fumes for the next two years is unacceptable and possesses and ongoing risk to my health and physical safety. My vehicle remained at the service repair shop for 55 days and still remains an active safety hazard.

Filed Aug 12, 2025 · Fuel system · 114,000 miles · AR

The contact owns a 2018 Nissan Armada. The contact stated that while the vehicle was parked and unoccupied, there was an abnormally strong fuel odor coming from the vehicle and there was fuel on the ground. The contact stated that prior to the failure, there was no warning light illuminated. Upon further inspection, the contact discovered a crack in the fuel pump near the fuel hose connection. The dealer was made aware of the failure and informed the contact that the fuel pump needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 114,000.

Filed Jan 7, 2021 · Engine · 90,000 miles · WA

In july 2017 and at 90k miles , my 2010 nissan armada began leaking exhaust fumes into the passenger cabin and the fuel economy dropped significantly. I took it to an authorized nissan service station, which charged me $150 to diagnose a cracked catalytic converter exhaust manifold on both sides. The repair estimate was about $4,000 to replace the manifolds at the dealership. The manufacturer's warranty expired at 80k miles and I was told that this is a known problem with armada and titan models. I shopped around for estimates and had the manifolds replaced by an independent mechanic with aftermarket parts for a total cost of $2,100 with a 2-year/24k miles warranty. In 2020 and at 125k miles (3 years/30k miles later), the same issue occurred and the shop would not extend the warranty. The nissan dealership service department estimates the repair at $5,000, and the independent shop estimates $1,900. All of the mechanics (including the nissan dealership) have advised me that they don't think the car is worth the investment at 130k miles considering the trade value is around $5k. I can't afford this repair twice in 3 years, and I'm driving my family around breathing in co fumes that could harm or kill us. I primarily use the vehicle for day-to-day suburban driving with occasional camping trips - no hard or off-road use. Nissan should address this issue and reimburse the cost of repairs as this is a potentially fatal issue for drivers. I am now faced with a decision to invest almost half the value of my vehicle in a repair that may fail again, or to buy a new car I can't currently afford in the middle of a pandemic. Please hold the manufacturer accountable to its us customers.

Filed Jun 18, 2019 · Engine · 110,000 miles · WA

Both of the exhaust manifolds and catalytic converters in our 2011 nissan armada have cracked. As a result, exhaust fumes were leaking into the passenger compartment creating a potentially deadly concentration of c02 fumes in the passenger compartment. This is a known design/engineering defect on all v8 nissan armada and nissan titan engines for at least 10 years. Nissan will only cover the federally mandated 8 year/80,000 emissions warranty. C02 inhalation causes hundreds of deaths per year in the us. This is an obvious safety issue that is known to the manufacturer and well documented in thousands of cases. As such it should be covered in full by the manufacturer. This repair cost us $2439.36. Nissan should reimburse us in full for the repairs.

Filed Jul 20, 2017 · Engine · 80,000 miles · AZ

Tl* the contact owns a 2006 nissan armada. The contact noticed an abnormal exhaust odor in the vehicle. Upon inspection, the contact discovered that the leak stemmed from the exhaust manifold into the passenger side cabin. The vehicle was taken to lamb nissan and the leak was confirmed. The dealer stated that the exhaust manifold needed to be replaced. The manufacturer was notfied of the failure and offered no assistance. The failure mileage was approximately 80,000.

Filed Mar 22, 2017 · Engine · 112,000 miles · NC

Tl* the contact owns a 2005 nissan armada. While driving various speeds, the vehicle made an abnormal noise and there was an exhaust odor in the vehicle. The failure occurred without warning. The vehicle was not diagnosed or repaired. Several years prior to the failure, both exhaust manifolds were replaced on the vehicle. The manufacturer was not notified of the failure. The failure mileage was approximately 112,000 the VIN was not provided. Updated 06/13/17*lj

Filed Sep 9, 2016 · Engine · 120,000 miles · CA

Tl* the contact owns a 2007 nissan armada. While the vehicle was stationary, the exhaust manifold fractured without warning. Exhaust fumes entered into the cabin of the vehicle. The vehicle was not repaired. The manufacturer was made aware of the issue. The failure mileage was 120,000. The VIN was not available. Updated 10/18/16*lj

Filed Oct 21, 2015 · Engine · 70,000 miles · CA

Tl* the contact owns a 2004 nissan armada. The contact stated that while driving at unknown speeds, the vehicle made an abnormal sound and exhaust fumes emitted into the cabin. The vehicle was taken to the dealer. The technician diagnosed that the driver and passenger sides exhaust manifold needed to be replaced. The vehicle was repaired however, the failure recurred. The vehicle was taken back to the dealer, where it was repaired under a manufacturers recall but the failure recurred. The manufacturer was made aware of the failure. The failure mileage was 70,000.