Used car guide

2003 Lexus SC430: common problems and what to check

What gets flagged at MOT on 2003 Lexus SC430s, from 287 tests in 2025, plus known faults and what to look at before you buy one.

Small sample: only 287 of these were MOT tested in 2025, so treat the percentages as rough. The known faults below don't depend on it.

287MOT tests in 2025
73%pass first time (all 2003 cars: 59%)
4,400typical miles a year
33%had suspension flagged

What gets flagged at MOT

The share of 2003 Lexus SC430 MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

  • Suspension
    33% 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.

  • Tyres
    24% 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.

  • Brakes
    20% 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
    14% of testsRough price £10–£80

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

  • 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.

  • Rust and bodywork
    8% 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.

Looking at a Lexus SC430?

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Other years

YearMOT testsMost flagged
2007169Suspension 24%
2006187Suspension 25%
2005222Suspension 24%
2004232Suspension 30%
2002348Suspension 27%
2001203Suspension 30%

Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2003 Lexus SC430s registered in 2003. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score