2018 Nissan Sentra: Power Train complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 46 owner complaints for the 2018 Nissan Sentra that list the power train component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11749670 (filed 07/10/2026): “On wednesday july 8, 2026 at approx 7:45 am the powertrain system failed entirely due to a catastrophic malfunction of the xtronic cvt (continuously variable transmission), which completely and instantly failed with absolutely no prior dashboard warning lamps, check engine lights, or symptoms. whil…”
- NHTSA complaint ODI #11734517 (filed 04/29/2026): “At right under 67,000 miles, the car made a loud pop when i went to accelerate from a stop light. the car would only work in reverse at that point. i'm being told that the cvt needs to be replaced. the car isn't even worth the cost of a new transmission.…”
- NHTSA complaint ODI #11700442 (filed 11/19/2025): “Transmission replacement - the transmission system requires replacement due to issues identified during inspection, including judder in the cvt and auxiliary gearbox. replacing the transmission can help address these concerns and improve the smoothn…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
DIY difficulty: Pro
Diagnosis needs a scan tool; repair or replacement needs a lift, transmission jack and the manufacturer's fluid fill/relearn procedure. (Our assessment.)
Cost
No sourced cost range for this issue. Get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
- NHTSA complaints API: SENTRA 2018
- NHTSA complaints API: SENTRA NISMO 2018
- NHTSA complaints API: SENTRA TURBO 2018
Page last updated .