Which parts fail
Components named in complaints (automatic and manual transmissions, CVT, axles, driveshaft, 4WD/AWD).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2006 Nissan Xterra owners, lightly cleaned up (personal details are redacted by NHTSA).
Car just shut off in traffic loosing all power and braking causing me to crash into the back of a stopped car at a red-light. After inspection from a mechanic shop, they informed me that something in the computer had fried causing the car to shut off, and it had also caused the transmission control unit module to go bad making the car not drive able.
The transmission was destroyed because a factory default with the radiator leaking antifreeze and transmission fluid into the transmission causing my transmission to self destruct. my safety was not safe since Nissan knew about the defect and I could have ceased into Anything at any time. There was no warning lights it just self destruct. Nissan has done nothing to inspect their failure. It is a well known problem.
Upon turning a corner after coming to a complete stop at a stop sign in my neighborhood, I went to accelerate and match the speed of oncoming traffic. The gear failed to shift appropriately (transmission) and giving the car gas simply revved the engine. Luckily the approaching car responded well and slowed to avoid a rear collision while I eased off the pedal and then gently accelerated again to my local mechanic. Upon his examination of my 2006 Xterra, he determined that the transmission fluid and coolant were mixing and destroying both my radiator and transmission. A quick search on the internet revealed that this dangerous problem is common among Nissan owners! When I purchased the vehicle from smithtown Nissan in 2010 and subsequently, there was absolutely no notification or recall regarding this dangerous hazard. This is unacceptable and life-threatening. …
Driving home from work my vehicle started to tremble and shudder at speeds above 30-40 MPH. Eventually after much hesitation and loud engine revving I decided to pull over and turn the vehicle off. Turned it back on and got about a few hundred feet down the road when the same problem occurred. The transmission wasn't responsive with the engine causing me to cut someone off just to pull of the road safely. I have heard the common issue with Nissan's transmission/coolant contamination and decided to look further into the issue after getting towed home. $100 down the drain. Sure enough my coolant reservoir and radiator cap were smothered in a thick goop known as the infamous "smod". There is trans fluid mixed into my coolant and more than likely, coolant in my transmission. This is design flaw in Nissan. …
Defective radiator leaked engine coolant into automatic transmission fluid (atf), causing cross-contamination of fluids that will ruin the re5r05a transmission. The engine coolant water contamination can short-circuit the low current electronic computer located on the valve body. This transmission was used in Xterra; frontier; pathfinder and armada vehicles manufactured between 2005 and 2010. Fixing the radiator and replacing the contaminated fluid with fresh fluid does not alleviate the problem, as the transmission computer has been permanently damaged. The only way to fix a damaged transmission computer is to replace it with a new one, and they are only available from Nissan as part of a new valve body assembly. …
I was on my way back from the mall when I heard my fan/belt start to squeal. Not thinking anything of it I kept on driving next thing I know I'm pressing harder on my gas peddle just to go faster. My rpms where going to high and I was only going 65. I was on the high when this happen so I didn't notice till I had to go up a bridge and that's when I really notice my engine struggling to get power, it sounded like it was doing a lot when it really wasn't. I knew I had to go to the mechanic to get it looked at they told me it was a lose bolt. Next thing I'm driving home and my car was doing the same thing again but this time it wasn't going into gear in drive, so I tried 3 gear still nothing so I went to 2 and it stuck. I parked it on a side street in ocean city and called trip a and had it towed to Nissan of atlantic city to see what was wrong. …
As I came up to stop at a red light, the Xterra began to shudder and the tachometer started rising and falling until I finally stopped, then the tachometer dropped below 500 RPM and the truck turned off. Restarted it fine, but it stalled again. I quickly figured out that although it is an automatic, I needed to drive it like a manual. So I put it in neutral, started it again, it did not stall, then I revved the engine to 2,000 RPM and put it into drive. Off I went, and it did not do it again that day. However, over the next month it became a growing problem, until it finally was occurring every single time I stopped unless I put it in neutral. I took it to the mechanic who spent 4 hours diagnosing it to be certain of the problem. Which they said was a failing torque convertor and plate. …
In October 2015 I noticed that my Xterra was overheating and the transmission was slipping at times. When I removed the radiator cap to check the coolant, it looked foamy and milky, like a lime smoothie. I thought I might have a blown head gasket and took the vehicle to my mechanic, who told me about the issue with Nissan radiator and transmission cross-contamination. He told me that flushing the systems would not help and the entire cooling system and transmission would need to be replaced to the tune of about $6500, which I didn't have. He told me to contact Nissan. Unfortunately, at the time my Xterra was diagnosed, it had 112,000 miles on it, which was beyond the scope of Nissan's extended warranty which came about as a result of the class-action lawsuit. The only thing they did for me was give me a refund on a recall item for which I'd paid before the recall came out. …
I am the very unfortunate owner of a 2006 Xterra, that is experiencing the infamous radiator leaking coolant fluid into the transmission. I have a 2006 Nissan Xterra automatic 4wd; purchased in 2009 certified pre-owned w/ 46K miles on it. Now it has 137K on it and I unfortunately experienced the infamous "strawberry milkshake of death" where due to a radiator default it leaks coolant fluid into the transmission causing irreversible damage 2 days ago on May 6th 2017. Right now the radiator is dead as well as the thermostat; a mechanic shop inspected the vehicule as I pulled over to their place when I experienced the issue and stopped driving immediately. …
Purchased vehicle in November 2015. Dealer stated vehicle had been serviced and new radiator installed. In June 2016, transmission fluid was drained as regular maintenance and fluid was contaminated with engine collant, therefore, transmission fluid had not been fully flushed and replaced. Flushed transmission with new transmission fluid to remove contaminated fluid. In July 2016, the vehicle was stationary and would not start due to a blown fuse. Determined that contaminated fluid had corroded the transmission control module, causing the blown fuses and would need to be replaced at a cost of $3000. …
NHTSA investigations
Transmission Failures
On February 29, 2012 the National Highway Traffic Safety Administration (NHTSA) received a letter petitioning the agency to conduct a defect investigation into MY 2005-2010 Nissan Pathfinder, Frontier, and Xterra vehicles [the subject vehicles] for automatic transmission failures related to failed transmission coolers.NHTSA conducted a comprehensive review of data related to this subject.
Transmission complaints in other Xterra years
Frequently asked questions
How common are transmission problems on the 2006 Nissan Xterra?
NHTSA has 268 complaints about the transmission & drivetrain of the 2006 Nissan Xterra, 34% of the model year's 780 complaints. The component named most often is automatic transmission (18 mentions).
Is there a recall for 2006 Nissan Xterra transmission problems?
No. NHTSA lists no transmission & drivetrain recall for the 2006 Nissan Xterra, though it has 3 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2006 Nissan Xterra transmission problems start?
Half of the complaints with a recorded mileage happened before about 109,000 miles, and 3% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 2 fires and 4 injuries to transmission & drivetrain problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.