What goes wrong, what it costs, and what to check before you buy a used Nissan 300zx.
The Nissan 300zx occupies a niche position on the UK market.
We track 5 known issues across the Nissan 300zx range, including 3 rated as safety-critical. Knowing which variants and configurations to approach with caution can save you from expensive surprises after purchase.
Found a Nissan 300zx? Enter the reg to see which of our 5 known issues apply to that exact car, plus full MOT history and mileage checks.
Z31 (1983–1989) — Engine options included the 3.0L V6. Our database flags 5 known issues on this generation, 3 of which are rated as safety-critical. The most significant concern is Structural corrosion compromising rigidity (£2,000–£5,000 to address).
Z32 (1989–2000) — Engine options included the 3.0L V6, 3.0L V6 Twin Turbo. Our database flags 5 known issues on this generation, 3 of which are rated as safety-critical. The most significant concern is Structural corrosion compromising rigidity (£2,000–£5,000 to address).
The 300ZX chassis suffers from severe structural corrosion that compromises the rigidity of the load-bearing assembly, particularly around suspension mounting points and the rear subframe area. This is a safety-critical defect that can lead to catastrophic structural failure, especially under hard braking or cornering loads.
Structural failure can result in loss of vehicle control, wheel detachment, or collapse of suspension components. The car becomes unsafe to drive and typically requires extensive welding work or structural replacement costing thousands of pounds. Many cars with severe structural corrosion are written off as beyond economical repair.
Inspect the wheel arches, sills, jacking points and door bottoms carefully. Press gently on sills to check for soft spots. Look underneath for corrosion on structural components. Check the MOT history for corrosion-related advisories or failures.
The prescribed areas within 30cm of subframe and suspension mounting points suffer from severe corrosion that significantly reduces load-bearing capacity. This represents a critical safety issue as these areas support the entire suspension system and their failure can cause wheel detachment or loss of vehicle control.
Failure of subframe mounting points can result in wheel detachment, loss of steering control, or complete suspension collapse. The vehicle becomes immediately unsafe to drive and requires major structural repair work. Costs typically range from £2000-6000 depending on the extent of damage, with many cars being written off as uneconomical to repair.
Inspect the wheel arches, sills, jacking points and door bottoms carefully. Press gently on sills to check for soft spots. Look underneath for corrosion on structural components. Check the MOT history for corrosion-related advisories or failures.
The brake system suffers from severe corrosion of both flexible hoses and rigid brake pipes, with MOT data showing ferrule corrosion at 7.1 times the fleet average and pipe damage at 2.7 times the fleet average. The age of these vehicles makes brake line deterioration a critical safety concern, as corroded brake lines can fail under pressure, resulting in complete brake failure. Both flexible hoses and steel pipes are affected, with corrosion typically worst around mounting points and areas exposed to road spray.
Brake line failure results in complete or partial brake system failure, creating an extreme safety hazard. Corroded brake lines can fail suddenly under normal braking loads, particularly during hard braking when line pressure is highest. The vehicle becomes unsafe to drive and requires immediate repair before any further use.
Check brake disc condition for lipping or scoring. Test braking at moderate speed for pulling to one side or vibration through the steering wheel. Review MOT advisories for brake-related items.
The 300ZX suffers from premature wheel bearing failure, with MOT data showing failures at 8.7 times the fleet average, particularly affecting higher mileage examples between 100,000-150,000 miles. The rear wheel bearings are particularly prone to failure due to the vehicle's weight distribution and performance-oriented suspension setup. Failed bearings create dangerous handling characteristics and can lead to wheel detachment if not addressed promptly.
Worn wheel bearings cause poor handling, increased tyre wear, and can lead to wheel separation if the bearing completely fails. The car should not be driven at speed with severely worn bearings. Replacement typically requires pressing out the old bearing and installing a new one, which requires specialist tools and experience.
Listen for knocking, clunking or rattling over bumps during the test drive. Inspect the underside for corroded or cracked suspension components. Check the MOT history for suspension-related advisories, which often predict future failures.
The 300ZX develops significant fluid leaks that pose environmental and safety risks, with MOT failures at The V6 engines are prone to oil leaks from valve cover gaskets, timing cover seals, and oil pan gaskets due to age-related seal deterioration. Turbocharged variants also suffer from turbo oil feed and return line leaks. Power steering and coolant leaks are also common, creating fire hazards and environmental contamination.
Significant fluid leaks create fire hazards, environmental damage, and can lead to component failure if fluid levels drop critically low. Oil leaks can cause engine seizure if oil pressure is lost. Coolant leaks can cause overheating and head gasket failure. Power steering leaks make the vehicle difficult to control at low speeds.
Check the oil level before the engine is started. Ask the seller how often they top up the oil between services. After a test drive, check the level again and look behind the car for blue or grey exhaust smoke under acceleration.
For the full breakdown of all 5 tracked issues with repair costs, see the Nissan 300zx common problems page.
Routine servicing (oil and filter change every 6k miles) typically costs £80–£120 at an independent garage.
The bigger-ticket items to budget for include timing belt and tensioner (£400–£600).
See the full Nissan 300zx service schedule for every interval and cost breakdown.
The Nissan 300zx has some well-documented weak points, including 3 safety-critical issues that demand careful checking. The right example, properly maintained, can still be a sound purchase — but cutting corners on the pre-purchase inspection is not advisable.
Before committing, check the car's full MOT history, verify the service record is complete, and if possible arrange a specialist inspection. Enter any registration into our free report to see the complete picture.
Get Car Wise maintains a database of known mechanical issues for every popular car on UK roads, tracking the faults that owners, specialists and DVSA data reveal.
When you run a report on a specific Nissan 300zx, we cross-reference the exact variant, engine and age against our database of 5 known issues. Combined with full MOT history analysis, mileage verification and DVLA data, you get a complete picture before viewing.
Enter the registration for MOT history, mileage verification, known faults for that exact variant, and a Get Car Wise Score.
This guide was compiled from independent expert reviews, DVSA MOT data, specialist workshops and our own database of 5 known Nissan 300zx issues. We are not affiliated with any source listed.