Used car guide

2004 Daihatsu Sirion: common problems and MOT failures

What MOT testers find on the Daihatsu Sirion first registered in 2004: we looked at the 305 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

Small sample: there were only 305 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.

305MOTs of 2004 cars, done in 2023–2025
56%pass first time (all 2004 cars: 57%)
3,400typical miles a year
3.3×the usual rate for rust around suspension or steering mountings

What goes wrong more than usual on a 2004 Daihatsu Sirion?

Parts flagged at MOT more often on the 2004 Daihatsu Sirion than on all cars registered in 2004.

  • Rust around suspension or steering mountings3.3× usual
    Daihatsu Sirion
    20% All 2004 cars
    6.1%

    Failed outright at MOT: 11.5%, against 2.9% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £100–£450 our estimate

    At the viewing: On a straight road the steering wheel should sit straight. Listen for knocks when turning, and check the steering feels even.

  • Corroded fuel pipes14× usual
    Daihatsu Sirion
    9.8% All 2004 cars
    0.7%

    Failed outright at MOT: 0%, against 0% of all 2004 cars. The rest were advisories or minor defects.

    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.

  • Ball joint dust cover2.3× usual
    Daihatsu Sirion
    10.8% All 2004 cars
    4.7%

    Failed outright at MOT: 2.3%, against 1.8% of all 2004 cars. The rest were advisories or minor defects.

    Rough price £60–£150 (one joint) ClickMechanic

    At the viewing: Listen for knocking over bumps and check the rubber boots behind the wheels aren't split.

Common 2004 Daihatsu Sirion MOT failures and advisories

The share of 2004 Daihatsu Sirion MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    43% 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
    38% 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
    31% of testsRough price £10–£80

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

  • Tyres
    28% 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.

  • Rust and bodywork
    21% of testsRough price £150–£1,000

    At the viewing: Check the sills, wheel arches and underneath for rust, and look along the panels for uneven gaps or paint.

  • Wipers, windscreen and mirrors
    12% of testsRough price £15–£250

    At the viewing: Check for chips in the driver's view, and test the wipers and washers.

Questions to ask the seller before buying a 2004 Daihatsu Sirion

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

  1. Any recent work on the rust around suspension or steering mountings? (Flagged at MOT 3.3× as often on the 2004 Daihatsu Sirion as on other cars the same age.)
  2. Any recent work on the corroded fuel pipes? (Flagged at MOT 14× as often on the 2004 Daihatsu Sirion as on other cars the same age.)
  3. Any recent work on the ball joint dust cover? (Flagged at MOT 2.3× as often on the 2004 Daihatsu Sirion as on other cars the same age.)
  4. Can I see the service history and receipts for any big jobs?

Looking at a Daihatsu Sirion?

Check the actual car: its own MOT history, mileage and what to ask the seller. Free, no sign-up.

Other years

Every year of the Daihatsu Sirion compared

YearMOT testsMost flagged
2010333Suspension 50%
20092,649Suspension 45%
20085,420Suspension 48%
20074,040Suspension 51%
20062,144Suspension 55%
20052,124Suspension 57%
2003381Suspension 43%
2002361Suspension 42%
2001212Suspension 38%
2000146Suspension 49%
1999136Suspension 43%
1998–Too few tests

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of Daihatsu Sirion cars first registered in 2004. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score