The L34 uses the Jatco CVT8 (JF017E), a stronger unit than the L33 JF015E. NHTSA CVT complaints are far below L33 levels, but VC-Turbo heat and neglected fluid still cause early shudder and hesitation. Replacement is $2,800–$4,500.
Accelerate briskly from 20 to 60 mph then hold 45 mph at light throttle for 30 seconds. Any shudder, belt-slip, or power interruption is a red flag. Ask for documented CVT fluid service records — NS-3 fluid, every 30,000 miles under severe conditions.
Est. cost: $2,800–$4,500 CVT replacement (remanufactured JF017E)
Source: NHTSA complaint database 2019–2023 Altima; Nissan service manual NS-3 specification