While driving through the intersection, my vehicle suddenly lost power causing me to get rear ended. Very minimal damage to my vehicle but my daughter was in the car with me. Upon further inspection at a shop it was concluded that the cause of the loss of power was due to a failure in the teams fluid cooler causing radiator fluid to enter the transmission. *tr
2008 Nissan Xterra engine problems
severe 15 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
15
Recalls
0
Avg fix
$3,100
1crash
1fire
When does it fail?
Of the 15 engine complaints filed for the 2008 Nissan Xterra, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA engine complaint has been filed on this vehicle in over 12 years — the issue may be aging out of the active population.
The failure pattern owners describe
Buyer takeaway: The 2008 Xterra has a well-documented transmission cooler failure that lets coolant leak into transmission fluid, causing transmission slipping and eventual failure between 60,000 and 180,000 miles—Nissan's extended warranty coverage is capped at 100,000 miles. Timing chain tensioner noise is common, and some owners report unexplained electrical warning lights and head gasket failures at higher mileage.
The dominant complaint across these narratives is transmission cooler failure in which engine coolant leaks into the automatic transmission fluid. Owners describe transmission slipping, hesitation, noise, sudden loss of power while driving (including on highways), and visible fluid leaks. One owner's transmission failure caused a rear-end collision. Repairs involve radiator and transmission replacement, with quoted costs reaching $6,000. Nissan extended warranty coverage for this issue to 100,000 miles, but that threshold leaves higher-mileage owners unprotected.
A separate head gasket failure at 180,000 miles caused sudden power loss, smoke, and required engine replacement. Timing chain tensioners produce loud whining noise, especially at low speeds; Nissan issued a Technical Service Bulletin for this problem in 2004.
Owners also report air pockets forming in the cooling system, causing heaters to blow cold air at idle—a condition that requires dealer service. One complaint documents multiple warning lights (VDC, slip, engine, tire pressure, airbag) combined with engine stalling at low speeds and fuel gauge failure, though the dealership denied the lights were present on the vehicle.
Same Nissan Xterra engine reports on nearby years: 2005 · 2006 · 2007
Failure modes owners describe
Transmission cooler failure with coolant contamination of transmission fluid
The transmission cooler (integrated into or adjacent to the radiator) develops a leak that allows engine coolant to enter the automatic transmission fluid. This contamination causes transmission slipping, erratic shifting, loss of power, and eventual transmission failure. Owners report the problem manifests as transmission hesitation, slipping, noise, or sudden loss of power while driving.
When: Between 60,800 and 180,000 miles; one case noted failure at 95,000 miles, another at 133,316 miles, another at approximately 180,000 miles
Symptoms owners cite: Transmission hesitation or slipping during acceleration or normal driving; Loss of engine power while driving at highway speed or during acceleration; Visible cream-colored fluid leaking from underneath the vehicle; Check Engine or Service Engine warning light illumination; Transmission making loud noise or grinding sound; Vehicle pulling down sharply when accelerator pressure released; Erratic or unsafe driving conditions
Codes mentioned: Check Engine light, Service Engine warning light, 4WD warning indicator
Repairs/costs cited: Radiator replacement, transmission fluid flush, thermostat replacement. One owner quoted $6,000 for transmission replacement. Some owners replaced only the radiator but transmission failure recurred or persisted.
Recalls/TSBs owners mention: Nissan extended coverage on vehicles up to 100,000 miles for this issue; coverage does not apply to higher-mileage vehicles. One owner received case number 34416631 when calling Nissan, but vehicle was denied warranty repair due to mileage (180,000 miles). TSB referenced for timing chain issues, but no specific recall mentioned for transmission cooler failure.
Head gasket failure with engine overheating and smoke
Engine head gasket failure resulting in loss of power, smoke under hood, and engine overheating. Mechanic diagnosis indicated complete engine replacement needed.
When: Approximately 180,000 miles
Symptoms owners cite: Loss of engine power while driving at 70 mph; All warning indicators illuminated on instrument panel; Smoke under the hood; Engine overheating
Codes mentioned: Multiple warning lights illuminated
Repairs/costs cited: Engine replacement required. Vehicle was not repaired; owner was out of warranty.
Recalls/TSBs owners mention: Vehicle out of warranty; no assistance provided. Case number 34416631 recorded with Nissan.
Timing chain tensioner noise and wear
Timing chain tensioners become noisy and eventually wear, producing a loud whining sound especially at low speeds or during acceleration. Owner references indicate Nissan issued a Technical Service Bulletin back in 2004 for this known issue.
When: Early in vehicle life; one complaint at 60,800 miles
Symptoms owners cite: High-pitched whining sound from engine at any speed, louder during acceleration; Whining sound most noticeable at low speeds or idle; Loud whining sound from timing chain tensioners
Repairs/costs cited: Timing belt tensioners replacement quoted at $1,400 at dealer. One owner had vehicle serviced and timing chain confirmed as faulty.
Recalls/TSBs owners mention: Technical Service Bulletin issued in 2004 regarding faulty timing chain tensioners (referenced by owner from nissanproblems.com).
Cooling system air pocket and heater malfunction
Air pockets form in the cooling system, causing the heater to blow cold air when the vehicle is idling. Dealer service is required to bleed the system.
When: Not specified; occurred on two different 2008 Xterra vehicles owned by same person
Symptoms owners cite: Heater blows cold air when vehicle is idling; Air pocket forming in cooling system
Repairs/costs cited: Air pocket removal requires dealer service visit and costs money.
Recalls/TSBs owners mention: Nissan service technician attributed to air pocket formation in cooling system.
Multiple electrical and engine control warning indicators without clear diagnosis
VDC, slip, engine, tire pressure, and airbag warning lights illuminate together. Engine stalls at takeoff and low speeds. Fuel gauge malfunction. Dealership unable or unwilling to diagnose the cause.
When: Vehicle three years old at time of complaint (approximately 2011 model year context, so roughly 80,000-90,000 miles estimated)
Symptoms owners cite: VDC/Slip/Engine/Tire Pressure/Airbag warning lights on; Engine stalling at takeoff; Engine stalling at low speeds (potentially dangerous); Fuel indicator not working
Codes mentioned: VDC warning, Slip warning, Engine warning, Tire Pressure warning, Airbag warning
Repairs/costs cited: Not diagnosed or repaired; dealership indicated lights were not present on vehicle despite owner observation.
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Had engine trouble with your 2008 Nissan Xterra?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2008 Nissan Xterra?
It's a meaningful issue. 15 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 14 complaints that reported odometer mileage, most engine failures cluster between 96,000 and 135,000 miles, with the median around 108,000. A quarter of owners report trouble before 96,000; a quarter make it past 135,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2008/Nissan/Xterra.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.