Used car guide

1991 BMW 3 Series: common problems and what to check

What gets flagged at MOT on 1991 BMW 3 Seriess, from 629 tests in 2025, plus known faults and what to look at before you buy one.

629MOT tests in 2025
80%pass first time (all 1991 cars: 71%)
3,400typical miles a year
2.6×the usual rate for suspension arm bushes and joints

What stands out

Parts flagged at MOT more often on 1991 BMW 3 Seriess than on all cars registered in 1991.

  • Suspension arm bushes and joints2.6× usual
    BMW 3 Series
    7.9% All 1991 cars
    3%

    Failed outright at MOT: 0.6%, against 0.4% of all 1991 cars. The rest were advisories or minor defects.

    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.

Better than most

Braking performance: 3.2% here, against 7.5% of all 1991 cars.

By area

The share of 1991 BMW 3 Series MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    24% of testsRough price £120–£400

    At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

  • Brakes
    22% of testsRough price £150–£350

    At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

  • Lights and electrics
    18% of testsRough price £10–£80

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

  • Oil and fluid leaks
    13% of testsRough price £80–£600

    At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

  • Tyres
    12% of testsRough price £70–£150

    At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

  • Exhaust and emissions
    10% of testsRough price £100–£1,200

    At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for engine or DPF warning lights.

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Other years

YearMOT testsMost flagged
2021386Tyres 22%
20203,166Tyres 24%
201911,430Tyres 25%
20188,504Tyres 26%
20173,622Tyres 26%
201624,243Tyres 27%
201530,049Tyres 29%
201429,426Tyres 31%
201331,654Tyres 30%
201230,461Suspension 32%
201124,841Tyres 34%
201022,691Suspension 38%
200920,166Suspension 40%
200819,093Suspension 42%
200721,666Brakes 42%
200615,748Brakes 46%
20059,866Brakes 45%
20047,889Brakes 43%
20038,471Brakes 43%
20026,561Brakes 42%
20014,182Brakes 40%
20002,180Brakes 42%
19992,166Brakes 36%
19981,679Brakes 34%
19971,277Brakes 36%
1996917Suspension 36%
1995607Brakes 36%
1994357Suspension 33%
1993374Brakes 31%
1992404Suspension 27%
19901,072Suspension 24%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 1991 BMW 3 Seriess registered in 1991. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score