NTB10-121B is a Nissan Technical Service Bulletin addressing a slight hesitation or surge sensation experienced by some 2007–2011 Nissan Altima vehicles equipped with a CVT transmission and QR25 engine during low-speed driving conditions.

This bulletin applies to:

• 2007–2011 Nissan Altima Sedan (L32)
• 2008–2011 Nissan Altima Coupe (CL32)
• QR25 2.5L engine models
• CVT-equipped vehicles only

Drivers may notice a slight hesitation, surge, or jerking sensation during light acceleration when driving at lower speeds. The condition is most noticeable under specific operating circumstances.

• Vehicle speed between 10 and 45 MPH
• Light throttle acceleration
• Engine speed between 1,200 and 2,000 RPM
• Torque converter clutch engaged (lock mode)

No. Nissan states that a very slight hesitation or surge under these specific conditions is considered a normal operating characteristic and falls within the vehicle's design specifications.

For customers who are particularly sensitive to the condition, Nissan may perform a Transmission Control Module (TCM) reprogramming procedure and inspect or service related components as outlined in the bulletin.

Results can vary depending on vehicle condition and driving habits. Many owners report improved drivability after the recommended service, although some operating characteristics may still be present due to normal CVT behavior.

Verify your model year, engine type, and transmission configuration. A Nissan dealership can confirm whether your vehicle matches the bulletin criteria and whether the symptoms occur under the specified operating conditions.