Elferlog
    All generations

    Porsche 928

    1978–1995 · V8 Water-Cooled · Rear-engine, rear-wheel drive

    Front-engine V8 grand tourer. 928 to S, S4, GT, and GTS over 17 years.

    Talk to 928 owners

    Variants

    • 9281978–1982 · 240 hp
    • 928 S1980–1986 · 300 hp
    • 928 S41987–1991 · 320 hp
    • 928 GT1989–1991 · 330 hp
    • 928 GTS1992–1995 · 350 hp

    What owners actually spend on the 928

    Median service costs from real logged records, broken down by job and category.

    See 928 running costs

    Known issues to look for

    • Timing belt failure

      critical

      Sudden engine stop, bent valves.

      Replace belt, tensioner, water pump every 60k mi / 5 years.

    • Head gasket seepage (S4/GT/GTS)

      critical

      Coolant loss, oil in coolant tank, chocolate residue.

      Address at first sign — head off is a substantial job.

    • A/C evaporator failure

      moderate

      Weak A/C, no cold, refrigerant loss.

      Full dash-out to replace evaporator core.

    • Fuel line degradation

      critical

      Fuel smell, weeping under intake.

      Replace period rubber lines with modern ethanol-safe hose.

    • Automatic transmission wear

      moderate

      Slipping, flare between shifts.

      Change ATF and filter every 40k miles.

    Documented 928 Porsches