IsItAGoodCar
Reliability Guide

Common Problems with the
1992 Porsche 968

The Porsche 968 launches in the UK as Coupé and Cabriolet, featuring a 237 bhp 3.0-litre engine with VarioCam and a six-speed manual transaxle.

What changed for 1992

  • •Inaugural launch of the 968 featuring 80 percent new components, 928-style pop-up headlights, and 6-speed gearbox.
  • •Debut of the 3.0-litre four-cylinder engine with Porsche first production VarioCam variable valve timing.

Common MOT watch-outs

  • !Excessive play or perished rubber gaiters on front suspension lower ball joints and track rod ends.
  • !Rear brake disc corrosion and binding handbrake shoe mechanisms inside rear brake disc bells.
3
Known Issues
2
Serious
1
Moderate
0
Minor

All Known Issues

VarioCam Camshaft Chain Tensioner Pad Wear

SeriousEngine

The 3.0-litre M44/43 engine utilizes a timing belt to drive the exhaust camshaft, which in turn drives the intake camshaft via a small chain governed by the hydraulic VarioCam tensioner. The tensioner incorporates composite plastic ramp pads that guide the connecting chain. Over time and high mileage, these plastic pads become brittle, groove deeply, and fracture. If the pad disintegrates, the timing chain can jump teeth or snap, resulting in catastrophic piston-to-valve contact and destroyed cylinder heads.

Est. Repair Cost: £700–£1,600 (preventative pad & chain) / £4,000–£7,000 (head rebuild)
Warning Signs:

Rattling or harsh clattering noise emanating from the top front of the camshaft cover around 1,500–2,500 rpm, Plastic fragments or brown nylon particles discovered in the engine oil drain pan during an oil change, Sluggish mid-range acceleration and rough engine idle caused by disrupted intake camshaft phase advance

What to Inspect:
  • Review service invoices to confirm when the VarioCam tensioner pads, chain, and cam sprockets were last renewed.
  • Remove the oil filler cap with a torch or request a specialist remove the cam cover to visually inspect the top plastic pad for grooves.
  • Listen closely to the front of the cylinder head with a mechanic stethoscope while varying engine revs between idle and 3,000 rpm.
Verified by IsItAGoodCar Research TeamUpdated

Transaxle Pinion Bearing Wear and Synchromesh Deterioration

SeriousGearbox & Transmission

The rear-mounted six-speed Getrag manual transaxle is subjected to high torque loads from the 3.0-litre four-cylinder powerplant. Over high mileages or aggressive track usage, the transaxle pinion shaft taper roller bearings develop pitting and wear, creating a distinct droning whine under acceleration and overrun. Additionally, second gear brass synchromesh rings wear out, causing gear selection resistance and crunching on brisk downshifts.

Est. Repair Cost: £1,200–£2,800
Warning Signs:

Persistent howling or droning noise from the rear boot floor that changes pitch with vehicle road speed, Crunching or baulking when downshifting from third into second gear under spirited driving, Excessive notchiness and difficulty engaging reverse gear when the transmission oil is cold

What to Inspect:
  • Perform a road test driving through all six gears, listening for whining noises from the rear axle during acceleration and coasting.
  • Shift rapidly from third into second gear at modest road speeds to evaluate the condition of the second gear synchromesh.
  • Inspect the transaxle casing on a ramp for oil leaks around the drive axle flange seals.
Verified by IsItAGoodCar Research TeamUpdated

Power Steering Pump Fluid Leaks and Hydraulic Rack Failure

ModerateSteering

The engine-driven hydraulic power steering pump on the 968 is prone to seal deterioration and weeping around the front shaft seal and high-pressure hose unions. Fluid leaks frequently drip down onto hot exhaust manifolds and lower suspension wishbone bushes. If hydraulic fluid runs low, the pump overheats, cavitates, and suffers total mechanical seizure, which throws off the drive belt and makes steering the heavy front-engined sports car exceptionally difficult.

Est. Repair Cost: £350–£850
Warning Signs:

Groaning, whining, or squealing noise from the front engine accessories when turning the steering wheel at low speeds, Stiff, notched, or suddenly heavy steering response during low-speed parking manoeuvres, Low fluid level in the power steering reservoir and oily fluid deposits coating the front undertray

What to Inspect:
  • Inspect the power steering pump housing, shaft pulley, and crimped hose connections for wet fluid weeping.
  • Check the condition of the steering rack rubber boots for fluid buildup indicating leaking internal rack seals.
  • Turn the steering wheel from lock to lock while stationary with the engine running, listening for pump groaning or cavitation.
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 1992 Porsche 968

  • Check for kerbing damage on expensive factory Cup alloy wheels, which jut outward and lack tyre rim protection.
  • Listen for balance shaft whining or roughness indicating an overtightened or misaligned balance shaft belt.
1993
Check a 1992 Porsche 968 by Registration