The 2018 Maxima uses Nissan's notorious Jatco CVT8 transmission paired with the VQ35DE V6. While the engine itself is generally solid, the CVT and its cooling system are the Achilles heel—expect transmission-related issues to dominate ownership costs past 80k miles.
CVT Transmission Failure / Judder
Common · high severityTypical onset: 60,000-120,000 mi
Symptoms: Shuddering or lurching during acceleration, especially from stop, Whining or grinding noises from transmission, Slipping or delayed engagement into gear, Transmission overheating warnings on dash, Complete loss of drive with check engine light
Fix: CVT replacement or rebuild required in most cases. Factory reman unit takes 8-12 hours including fluid flush and cooler inspection. Some shops attempt valve body replacement first (4-6 hours) but success rate is hit-or-miss. Always replace transmission oil cooler simultaneously.
Estimated cost: $4,500-7,500
Transmission Oil Cooler Failure
Common · high severityTypical onset: 70,000-100,000 mi
Symptoms: CVT fluid mixing with coolant (strawberry milkshake in overflow tank), Transmission running hot or overheating, Loss of CVT fluid without visible external leaks, Engine overheating in conjunction with transmission issues
Fix: Replace external transmission cooler and radiator if cross-contamination occurred. Requires full CVT fluid flush (multiple cycles) to purge contaminated fluid—critical to prevent secondary CVT damage. 4-6 hours labor for cooler plus flush, more if radiator compromised.
Estimated cost: $1,200-2,800
Transmission Mounts Deteriorating
Common · medium severityTypical onset: 50,000-90,000 mi
Symptoms: Clunking when shifting from park to drive or reverse, Excessive engine movement visible when accelerating hard, Vibration through cabin at idle or during takeoff, Banging noise over bumps from engine bay
Fix: Front and rear transmission mounts commonly fail due to CVT vibration characteristics. Replace both simultaneously—front is 2 hours, rear is 1.5 hours. Hydraulic mounts wear faster than on traditional automatics.
Estimated cost: $450-800
VQ35DE Timing Chain / Guide Wear
Occasional · high severityTypical onset: 100,000-150,000 mi
Symptoms: Rattling from engine on cold start (first 3-5 seconds), Metallic ticking that increases with RPM, Check engine light with timing correlation codes (P0011, P0021), Loss of power or rough running if severely worn
Fix: Timing chain, guides, and tensioners need replacement. This is a 10-14 hour job on the VQ35—requires front accessory removal and valve cover work. If ignored, chain can jump time and cause valve-to-piston contact requiring head work or short block.
Estimated cost: $2,200-3,800
Fuel Injector Failure
Occasional · medium severityTypical onset: 80,000-130,000 mi
Symptoms: Rough idle or misfires on specific cylinders, Check engine light with misfire codes (P0300-P0306), Fuel smell from engine bay or tailpipe, Hard starting or extended cranking when hot, Black smoke or carbon buildup on plugs
Fix: Direct injection system prone to carbon buildup and injector tip failure. Replace failed injector(s) and perform intake valve cleaning simultaneously—2-4 hours depending on cylinder access. GDI carbon cleaning adds 2 hours if done properly with walnut blasting.
Estimated cost: $600-1,400
ABS Module / Pump Failure
Occasional · high severityTypical onset: 60,000-100,000 mi
Symptoms: ABS light stays on continuously, Brake warning light with ABS lamp, Grinding or motor noise from ABS pump under hood, Loss of ABS function (pedal doesn't pulse in panic stops), Traction control and VDC lights illuminated together
Fix: ABS hydraulic unit assembly fails—internal valve sticking or pump motor burnout. Requires module replacement and brake system bleed. Dealer programming mandatory for new unit. 2-3 hours labor plus bleeding procedure. This has TSB coverage in some cases.
Estimated cost: $1,800-2,600
Buy only with comprehensive service records showing religious CVT maintenance, or budget $5k-7k for eventual transmission replacement—the CVT is a ticking time bomb on these.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.