The 2007 Fairlady Z (350Z) with the VQ35DE is a generally robust sports car, but the manual transmission can suffer from internal wear, and the VQ35 is notorious for timing chain guide failures and oil consumption issues as it ages.
Timing Chain Guide and Tensioner Failure
Common · high severityTypical onset: 80,000-150,000 mi
Symptoms: Cold-start rattle lasting 3-5 seconds, Metallic rattling from front of engine under acceleration, Check engine light with cam/crank correlation codes, Complete loss of power if chain jumps timing
Fix: Requires front engine teardown to replace timing chain, guides, tensioners, and usually all three chains (both secondary and primary). Book time is 12-16 hours depending on whether heads come off. Many techs recommend doing head gaskets and valve cover gaskets while in there.
Estimated cost: $2,800-5,500
Manual Transmission Synchro Wear (5th and 6th Gear)
Occasional · medium severityTypical onset: 60,000-120,000 mi
Symptoms: Grinding or crunch going into 5th or 6th gear, especially when cold, Difficulty downshifting into lower gears, Gear pop-out under deceleration
Fix: Transmission must come out for rebuild or replacement. Synchro rings and keys are the culprits. Expect 8-10 hours labor for trans removal, rebuild, and reinstall. Many owners opt for a used transmission from a low-mile car instead of rebuild.
Estimated cost: $2,200-3,800
Oil Consumption from Piston Ring Wear
Common · medium severityTypical onset: 100,000-180,000 mi
Symptoms: Blue smoke on cold start or hard acceleration, Burning 1 quart per 1,000-2,000 miles, Carbon buildup on spark plugs, Reduced power and misfires if oil level drops too low
Fix: Piston rings are the root cause, which means engine-out rebuild or replacement. Some techs will do a top-end refresh with new rings and hone, but most recommend short-block replacement or full rebuild. Book time is 20-30 hours depending on how deep you go.
Estimated cost: $4,500-8,000
Transmission Oil Cooler Line Leaks
Occasional · low severityTypical onset: 70,000-130,000 mi
Symptoms: Transmission fluid drips under car near radiator, Low trans fluid level on dipstick, Burnt smell if fluid is low long enough
Fix: Cooler lines corrode or develop pinhole leaks at crimp points. Replace lines and top off fluid. Labor is 1-2 hours depending on line routing.
Estimated cost: $200-450
Engine Lifter Tick and Collapsed Lifters
Occasional · medium severityTypical onset: 90,000-150,000 mi
Symptoms: Persistent ticking from valve train, especially cylinder 5 or 6, Tick worsens with heat, Misfire codes if lifter fully collapses
Fix: Valve covers come off, camshafts out, replace failed lifters and check cam lobes for scoring. Labor is 6-9 hours. Often done alongside timing chain service if already in the front end.
Estimated cost: $1,200-2,400
Transmission Mount Failure
Common · low severityTypical onset: 50,000-100,000 mi
Symptoms: Clunking or banging on hard shifts or throttle lift, Excessive driveline vibration, Visible torn rubber on mount inspection
Fix: Replace transmission mount. Labor is 1-2 hours, straightforward job. Polyurethane aftermarket mounts last longer but transmit more NVH.
Estimated cost: $150-350
Great driver's car with a bulletproof chassis, but budget $3,000-5,000 for timing chain service and be prepared for transmission work if buying high-mileage.
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.