Nissan 350Z
Evolution of the VQ35DE with higher compression (10.6:1), revised intake, and rev limit raised to 7,500 rpm. Noticeably more power in the upper rev range. Critical problem: paper-based oil gallery gaskets behind the timing chain cover fail regardless of mileage and cause oil pressure drops below 15 psi — always measure oil pressure and check for P0011/P0021 codes before buying.
Rev it up: when the V6 starts screaming
The HR is the sharper weapon: 7,500 rpm redline, more vocal in the upper range, 304 hp that only fully arrive at 6,600 rpm. In the manual 350Z facelift you rev every gear to the limiter — not because you have to, but because you want to.
Engine Weaknesses 8
The paper-based oil gallery gaskets behind the front timing chain cover swell or tear. Oil pressure drops without any external leak being visible — camshafts and bearings are starved of oil.
Symptoms: Low oil pressure when warm (below 30 psi at idle), P0011/P0021 fault codes, jerky acceleration, power loss above 2,500 rpm
The variable cam timing (VTC) phasers require consistently high oil pressure. When oil gallery gaskets fail, the phasers lose working pressure and rattle — resulting in P0011/P0021 codes and ECM rev limiting to around 3,000 rpm.
Symptoms: Metallic rattle at idle after warm-up, torque loss in mid-rev range, MIL with P0011 or P0021, rev limiting by ECM
The secondary timing chain tensioners and guide rails of the VQ35HR wear at higher mileage. Missing oil pressure from oil gallery gasket failure accelerates wear further.
Symptoms: Brief cold-start rattle (3–5 seconds), worsens the longer the car has been standing, if neglected permanent rattle and engine warning light
The VQ35HR can consume up to 1 litre of oil per 1,000 km when the piston oil scraper rings are worn. Regular oil level checks and quality oil are essential.
Symptoms: Dropping oil level, blue smoke at full load or on overrun, oil consumption above 0.5 l/1,000 km
The VQ35HR radiator cooling fan corrodes from salt exposure and fails. Overheating is a risk at idle or low speeds. Replacement fans are expensive.
Symptoms: Temperature gauge rises in traffic, overheating warning, fan fails to switch on
The VQ35HR valve cover gaskets become leaky at higher mileages and cause oil loss. On the V6 with two cam covers, both sides may need replacing. Inexpensive repair.
Symptoms: Oil traces on cam covers, oily smell after driving, oil on exhaust manifolds
Ignition coils fail more frequently on the VQ35HR than on other V6 engines. Fault code P0305 (misfire cylinder 5) is particularly common. On a V6 with six coils, all should be replaced at the same time.
Symptoms: Engine stumble under load, engine warning light P0305, rough idle, power loss
The VQ35HR camshaft sensor fails from around 80,000 km (fault code P1078). Often the wiring harness to the VVEL solenoid is the actual cause, not the sensor itself.
Symptoms: Engine warning light P1078, restricted power, rough idle
Vehicle Weaknesses 12
The rear wheel arches are double-wall welded. Corrosion starts at this weld seam and grows inward. The rear axle wheel arches are welded in place and difficult to repair.
The front control arm rubber bushings tear or detach from around 100,000 km. The control arm can then move axially, changing the toe angle and causing dangerous straight-line instability.
The standard silicone-filled differential mount bushing tears under hard driving. Identifiable by black silicone traces on the subframe. The differential then moves during driving.
The standard brake rotors warp, especially with spirited or half-hearted track use. Even the Brembo rotors on the Track model are sensitive to thermal shock.
The shaft seals of the rack-and-pinion steering wear and start leaking. The adjustment nut is sealed with thread locker and cannot be retightened. Virtually inevitable on older vehicles.
The underbody received inadequate factory corrosion protection. The transversely mounted W-brace under the vehicle rusts badly. Heat shields at the exhaust lose their hold due to corrosion.
The two retaining straps on the 5th convertible bow break or stretch. The roof then no longer folds completely and the cover panel cannot be closed.
The rear wheel sensors sit on the differential housing and are installed as a set in a wiring harness. Corrosion at connectors causes false signals. ABS, TCS, and SLIP warning lights illuminate simultaneously.
The nylon ball joint sway bar end links wear prematurely. The nylon bushings settle, the ball joints rattle. Problem occurs especially with spirited driving and after lowering.
The window regulator cable makes 90-degree turns at five points and collects dirt in the guide tubes. This causes increased friction, motor overload, and eventually motor failure.
The door window seals harden and lose their sealing effect. Rainwater runs down the inside of the A-pillar and soaks the door trim and carpet.
The side bolsters of the sport seats are heavily stressed by repeated entry and exit. The leather tears and develops fine crease lines, especially on the driver's seat.
Reports & Tests
652 owner complaints filed with NHTSA (2002–2009). Most reported: Suspension (148), Powertrain (133), Tires (122).