Used car guide · 1997–2003

BMW Z3 common problems and MOT failures

What goes wrong on a used BMW Z3, year by year: known faults from UK buying guides, the parts flagged at MOT more than on other cars (from 35,100 MOTs done during 2023–2025), and what to check before you buy one.

35,100MOTs done in 2023–2025, all years of this model
14,732on the UK register

Pick the year

Most years have their own guide. The year is when the car was first registered (it’s on the logbook, or check the reg below).

2003200220012000199919981997

What usually goes wrong with a BMW Z3?

We haven’t found widely reported faults for the BMW Z3 in the UK buying guides we use yet. That doesn’t mean it has none, so check the car carefully and look at the MOT weak spots below.

Common BMW Z3 MOT failures to check

Parts flagged at MOT well above the usual rate for cars the same age. From the DVSA’s results for every MOT done in Great Britain during 2023–2025.

  • Suspension arm

    up to 3× usual

    Stands out on cars registered in 1997, 1998, 1999, 2000 and 2001.

    Rough price £120–£180 (one arm) ClickMechanic

    At the viewing: Listen for clunks over bumps and feel for the steering wandering. Worn arm bushes show as cracked rubber near the wheels.

  • Airbag warning light

    up to 3.6× usual

    Stands out on cars registered in 1998, 1999, 2000 and 2001.

    Rough price £10–£80 our estimate

    At the viewing: Ask a friend to check every light while you work the switches: indicators, brake lights, fog lights and reversing lights.

  • Power steering pipes and hoses

    up to 2.3× usual

    Stands out on cars registered in 1999, 2000, 2001 and 2002.

    Rough price £100–£400 our estimate

    At the viewing: Ask to see underneath, or check the MOT advisories: corroded brake or fuel pipes get worse every year and fail the MOT when they do.

  • Anti-roll bar link bushes

    up to 1.9× usual

    Stands out on cars registered in 1998, 1999, 2000 and 2002.

    Rough price £100–£280 (pair of drop links) Checkatrade

    At the viewing: Drive slowly over bumps and listen for a knock or rattle from the front. Worn anti-roll bar links are a cheap fix.

  • Anti-lock braking system

    up to 2.6× usual

    Stands out on cars registered in 1999 and 2000.

    Rough price £100–£350 our estimate

    At the viewing: On a quiet road, brake firmly from about 30mph. The car should stop straight without pulling.

  • Side repeaters

    up to 2.4× usual

    Stands out on cars registered in 2001 and 2002.

    Rough price £10–£80 our estimate

    At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

BMW Z3 MOT pass rate by year

Older cars fail more, so compare each year with all cars registered the same year.

YearPass first timeAll cars that yearMOT tests
200376%57% +19257 (small sample)
200272%58% +143,217
200169%60% +95,346
200070%61% +95,716
199970%63% +78,255
199868%65% +37,391
199764%65% -14,918

Questions to ask the seller before buying a BMW Z3

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

  1. Any recent work on the suspension arm? (Flagged at MOT 3× as often on the BMW Z3 as on other cars the same age.)
  2. Any recent work on the airbag warning light? (Flagged at MOT 3.6× as often on the BMW Z3 as on other cars the same age.)
  3. Any recent work on the power steering pipes and hoses? (Flagged at MOT 2.3× as often on the BMW Z3 as on other cars the same age.)
  4. Can I see the service history and receipts for any big jobs?

Looking at a BMW Z3?

Check the actual car: its own MOT history, whether it already shows these weak spots and what to ask the seller. Free, no sign-up.

Where this comes from: MOT figures are the DVSA’s anonymised results for every MOT test done in Great Britain during 2023–2025, grouped by the year each car was first registered. How many are on the road is from the Department for Transport’s vehicle licensing statistics. Known faults are from UK buying guides, in our own words, with links. How we score