It depends on the engine: the 2013 Altima's motor-mount count typically varies by drivetrain—three mounts for the 2.5-liter four-cylinder and four mounts for the 3.5-liter V6.
Engine options and typical mount counts
Note that the Altima's mount count can vary by trim, transmission, and production date. The following reflects common configurations for the 2013 model year.
- 2.5L four-cylinder (QR25DE): typically three motor mounts — two engine mounts securing the block and a third mount handling the transmission/torque path to dampen engine movement.
- 3.5L V6 (VQ35DE): typically four motor mounts — two engine mounts plus two transmission/torque mounts to better control the heavier powerplant.
Keep in mind that exact configurations can vary. For a precise count and location, consult the service manual or VIN-specific diagrams for your vehicle.
Maintenance and replacement considerations
Motor mounts wear over time and may need replacement if you notice excessive engine movement, vibrations, or abnormal noises. Replacing mounts is often done in pairs to maintain balanced vibration control and ensure proper alignment during reassembly.
Signs to inspect motor mounts
If you suspect worn mounts, look for these indicators:
- Excessive engine movement or rocking when accelerating, decelerating, or shifting gears.
- Increased cabin vibrations at idle or during acceleration.
- Clunking or banging noises coming from under the hood when starting the engine or changing loads.
- Visible wear or cracking in the mount rubber or metal hardware.
Because mount configuration can differ by engine and production date, verify with the vehicle’s service manual or a trusted Nissan technician for your exact VIN.
Summary: For the 2013 Altima, the 2.5L model typically has three motor mounts, while the 3.5L V6 model typically has four. Always check VIN-specific service diagrams to confirm exact counts and locations.