Used car guide

2003 MG ZT-T petrol: common problems and MOT failures

What MOT testers find on the petrol MG ZT-T first registered in 2003 (petrol cars only): we looked at the 256 MOTs these cars had during 2023–2025. Plus known faults and what to look at before you buy one.

Small sample: there were only 256 MOTs of these cars during 2023–2025, so treat the percentages as rough. The known faults below don't depend on it.

256MOTs of 2003 petrol cars, done in 2023–2025
64%pass first time (all 2003 cars: 57%)
4,800typical miles a year
46%had suspension flagged

Common 2003 MG ZT-T petrol MOT failures and advisories

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

  • Suspension
    46% 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
    41% 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
    29% 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
    25% 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
    12% 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 an engine warning light.

  • Wipers, windscreen and mirrors
    10% 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 2003 MG ZT-T petrol

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

  1. Can I see the service history and receipts for any big jobs?

Looking at an MG ZT-T?

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Other years

Every year of the MG ZT-T compared

YearMOT testsMost flagged
2006107Suspension 42%
2005466Suspension 47%
2004859Brakes 42%
2002262Suspension 47%

Where this comes from: the DVSA's anonymised results for every MOT test done in Great Britain during 2023–2025, counting the MOTs of MG ZT-T cars first registered in 2003. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score