The VQ35DE is widely documented across forums and Reddit as notoriously prone to excessive oil consumption. Affected engines can consume significant oil between service intervals, risking low oil levels and accelerated internal wear if not monitored closely. In severe cases, Nissan has been known to cover partial engine replacement costs.
Rapid oil level drop between services
Blue smoke from exhaust, especially on startup or deceleration
Frequent need to top up oil between changes
DIY: Low (monitoring) / High (repair)
Forced Induction Reliability Under Modification€800-4,000 · 50,000-120,000 kmMODERATE
Community data notes that the VQ engine's reliability when modified with forced induction or full bolt-on upgrades is a known concern. The bi-turbo configuration in this pre-facelift Z33 adds additional stress on engine internals and turbo components, increasing risk of failure under hard use.
Boost-related misfires
Turbo oil feed or seal failures
Increased oil consumption under boost
DIY: High
General VQ Wear at High Mileage€500-2,500 · 120,000-200,000 kmMODERATE
Higher-mileage VQ35 units show general internal wear consistent with age and use. Community threads note concern around 142,000+ km examples, questioning long-term durability of seals, valve stem seals, and timing chain components.
While Nissan CVT issues are widely discussed in community data, this applies primarily to other Nissan models. The 350Z uses a manual or conventional automatic, so CVT-specific failure risk is not directly applicable. However, general Nissan transmission awareness is noted by community members.
Slipping or jerky gearchanges (automatic variant)
Clutch wear on manual variants
DIY: Medium
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Buying Checklist
Check oil level and condition — note exact level, then recheck after a 50 km test drive to gauge consumption rate
Start the engine cold and listen for timing chain rattle in the first 10-30 seconds
Look for blue smoke on startup and during deceleration, indicating oil burning
Inspect turbocharger shaft play by hand and check for oil leaks around turbo feed and return lines
Request full service history and verify oil change intervals of no more than 7,000 km with full synthetic oil
Perform a compression and leak-down test before purchase, especially on examples over 80,000 km
Service Reality
Community oil interval5,000 km
Oil specification5W-40 full synthetic (e.g., Liqui Moly 5W-40)
Est. ownership cost (2yr)€1,200-4,500 per year depending on mileage, oil consumption severity, and turbo condition
The Nissan 350Z Z33 Pre-facelift with the bi-turbo VQ35DE is a genuinely exciting sports car, but oil consumption is a serious and well-documented issue that must be your primary concern before purchase. Any example without a verified short oil change history (5,000–7,000 km full synthetic) should be treated as high-risk for accelerated internal wear. Budget for ongoing oil monitoring and potential valve seal or turbo work, especially on higher-mileage cars. If the service history is solid and oil consumption is confirmed as minimal on a test drive, these can be rewarding purchases — but go in with eyes open and a pre-purchase inspection from a Nissan specialist.
Parts People Buy
Liqui Moly 5W-40 Full Synthetic Engine OilLink unavailable
VQ35DE Valve Stem Seal SetLink unavailable
VQ35DE Timing Chain Kit with TensionersLink unavailable