SERVICE INFORMATION If a customer describes lack of power or poor acceleration, perform the following checks before attempting any repair: * Check for stored DTCs. * Check if the driver is resting their left foot on the brake pedal while accelerating. Advise the customer not to rest their foot on the brake while accelerating. * Use CONSULT-III plus in Engine Data Monitor to check operation of the brake lamp circuit signal. Monitor the brake switch during the incident; it should be "OFF". Please see this bulletn for further details.
full bulletin at NHTSA ↗2008 Nissan Sentra powertrain problems
moderate 17 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
17
Recalls
0
Avg fix
$2,500
When does it fail?
Of the 17 powertrain complaints filed for the 2008 Nissan Sentra, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 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 powertrain complaint has been filed on this vehicle in over 11 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
CVT transmission failures dominate complaints on 2008 Sentras. Owners report complete transmission stoppage, slipping, and the transmission entering "limp mode" that caps speed at 55 mph—sometimes at highway speeds with traffic present. One owner experienced gear shift from 65 mph down to 40 mph on I-95 with a young child aboard. Another replaced a transmission only to have the replacement unit enter limp mode during a second vacation attempt. A third owner had two transmissions fail within 173 miles of each other at 67,672 and 68,845 miles.
Repeated replacement is the pattern: one owner is on the third transmission; another on the second at just 56,354 miles despite light, careful driving. Nissan extended the CVT warranty to 10 years/120,000 miles in response to known defects, yet a dealership told one owner they installed a known-bad transmission and cannot fix the recurring limp mode issue.
Other persistent issues include loud grinding or droning noise from the CVT that does not stop even after transaxle replacement, transmission overheating during normal highway driving, delayed gear engagement (engine revs but car doesn't move for seconds, then slams into gear), and loss of power when the transmission gets hot. One owner reported transmission failure immediately after a dealer allegedly did not run proper diagnostics.
Owners universally describe these failures as dangerous—near-accidents from unexpected speed drops on busy highways are cited multiple times—and financially ruinous, with repair bills reaching $3,500 and repeated failures outside early warranty periods leaving owners stranded with bills they cannot pay.
Same Nissan Sentra powertrain reports on nearby years: 2007 · 2010 · 2011
Failure modes owners describe
CVT transmission failure / slipping
The CVT transmission fails completely or slips during operation, often requiring full replacement. Owners report the transmission starts slipping, then stops working. One owner experienced transmission failure at 67,672 miles, then again at 68,845 miles (173 miles after replacement). Another owner had a second transmission failure at 56,354 miles. Multiple owners report this as a recurring defect across multiple vehicles with the same transmission type.
When: Varies: 3 months after purchase, 67,672 miles, 68,845 miles (after 1st replacement), 56,354 miles (after 1st replacement), 26K miles, 80,000 miles, and multiple vehicles show pattern of failure within warranty or shortly after.
Symptoms owners cite: Transmission completely stops working; Transmission starts slipping; CVT enters 'limp mode' - car will not exceed 55 mph; Gears shift unexpectedly from 65 mph down to 40 mph on highway; Engine revs but transmission doesn't move the car (feels like neutral); Delayed engagement followed by violent slam into gear; Intermittent loss of acceleration response
Codes mentioned: Transmission failure codes (unspecified in narratives), Check engine light illumination
Repairs/costs cited: Transmission replacement required. One owner spent $3,500 on transmission replacement. Multiple owners report warranty coverage for replacements, though issues persist with replacement units. Nissan extended CVT warranty from 5 years/60,000 miles to 10 years/120,000 miles due to known problems.
Recalls/TSBs owners mention: Nissan extended CVT warranty to 10 years/120,000 miles. Dealership acknowledged knowing about limp mode issue in these models but stated they have no way to fix it. One dealer suggested fluid changes help but acknowledged installing a known-bad transmission as warranty replacement. Nissan Consumer Affairs directed owners back to original dealers with no additional assistance.
CVT transmission noise
Loud, abnormal grinding or droning noise originates from the CVT transaxle assembly. The noise is deafening inside the cabin, especially at higher speeds, making it difficult to hear external traffic. One owner reports the noise persists even after dealer replaced the CVT transaxle assembly and is worse than before. The vehicle feels stuck in low gear.
When: At 26,000 miles; apparent at 25 mph
Symptoms owners cite: Very loud, grumbling, droning noise from transmission; Noise deafening in passenger cabin; Worse at higher speeds; Feels like vehicle is stuck in low gear; Unbearable noise level requiring radio volume increase and window opening to mask it
Repairs/costs cited: CVT transaxle assembly was replaced by dealer, but noise persisted and worsened. Owner notes similar complaints filed with other Nissan models using the same transaxle type.
Transmission overheating / cooling system failure
The transmission overheats due to inadequate cooling system design or malfunction. One owner reports transmission failure required replacement because of a cooling system problem and that the vehicle needed a cooling device to prevent overheating.
When: At unknown mileage; occurred during highway driving
Symptoms owners cite: Transmission malfunction caused by overheating; Freeway breakdown requiring transmission replacement
Repairs/costs cited: Transmission replacement required. Cost was approximately $3,500 at dealer.
Loss of power / reduced speed capability when transmission is hot
When the transmission becomes hot during extended driving, the vehicle loses power and cannot maintain highway speeds, limiting operation to 30 mph or lower. One owner reports transmission does not respond when hot.
When: After one hour of highway driving; when transmission heats up
Symptoms owners cite: Vehicle slows down at highway speeds after driving for one hour; Loss of all power to 30 mph when transmission is hot; Transmission does not respond when hot
Delayed gear engagement / transmission hesitation
Transmission hesitates or fails to respond immediately when accelerator is pressed. Engine revs but transmission does not move the car, as if in neutral. Problem is intermittent. When foot is held on accelerator, transmission suddenly and violently engages with a loud bang.
When: At 30,000 miles; occurs intermittently approximately 6 times in 30,000 miles
Symptoms owners cite: Engine revs but transmission does not move car; Transmission behaves as if in neutral when accelerating; Intermittent delayed response to accelerator input; Violent slam into gear after delay; Can occur from initial start or during driving after lifting foot off accelerator
Transmission shift problems at specific speeds
Transmission refuses to shift properly at around 30 mph during normal acceleration. Owner must shift vehicle into Park, then back to Drive to reset the transmission and allow normal operation. Additional issue with RPM fluctuation and failure to downshift properly.
When: 152,000 miles on vehicle (transmission is newer, replaced several years prior)
Symptoms owners cite: Transmission won't shift gears at around 30 mph; Requires manual reset (Park to Drive) to resume normal operation; RPM fluctuates between 2 to 3.5 rpms while highway driving at 65-80 mph; RPMs stay above 2.5 rpms while going down hills until speed drops below 15 mph
Codes mentioned: Transmission codes triggered
Repairs/costs cited: Transmission fluid is good. Nissan previously installed a new transmission on this vehicle a few years ago. Owner reports seeing many complaints about this transmission for this car model.
Complete loss of drive function
Transmission fails completely, leaving vehicle unable to move. In one case, while vehicle was moving at low speed (5 mph), it came to a complete stop and would not accelerate. In another case, abnormal noise was accompanied by transmission failure and vehicle would not move forward.
When: At 54,000 miles (case 1); at approximately 80,000 miles (case 2)
Symptoms owners cite: Complete stop with inability to accelerate; Check engine light illuminated; Abnormal noise from front of vehicle followed by no forward motion
Codes mentioned: Check engine light
Repairs/costs cited: Case 1: Technician initially diagnosed camshaft sensor replacement needed, but later determined engine and transmission needed replacement. Transmission was replaced but failure recurred at 55,000 miles. Case 2: Vehicle was towed; dealer was not contacted and vehicle was not repaired.
Recalls/TSBs owners mention: Manufacturer was notified in both cases.
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
When purchasing my used vehicle from el monte Toyota, notice sensor for tire on, was told be fixed, months later learn rim missing sensor. Light in car also don't work. Driving car immediately was stalling out shutting off when idol. Took car back week later since within 30 day warranty spoke to customer service on recorded call and she didn't thoroughly document conversation. Upon waiting four…
Tl* the contact owns a 2008 Nissan sentra. The contact stated that while driving at an unknown speed, there was an abnormal noise coming from the front of the vehicle. The vehicle failed to move forward. The contact mentioned that the transmission failed. The vehicle was towed to the contact's residence. The dealer was not contacted. The vehicle was not repaired. The manufacturer was notified of…
Had powertrain trouble with your 2008 Nissan Sentra?
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 powertrain problem on the 2008 Nissan Sentra?
It's a documented issue but not catastrophic. 17 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Across the 16 complaints that reported odometer mileage, most powertrain failures cluster between 56,354 and 124,040 miles, with the median around 73,000. A quarter of owners report trouble before 56,354; a quarter make it past 124,040. 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 $2,500 for powertrain 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 powertrain?
No active recalls currently cover powertrain 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/Sentra.
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.