2019 Hyundai I40 diesel: common problems and MOT failures

What goes wrong more than usual on a 2019 Hyundai I40 diesel?

Parts flagged at MOT more often on the 2019 Hyundai I40 diesel than on all cars registered in 2019.

• Number plates2.2× usual
  Hyundai I40

  2.4% All 2019 cars

  1.1%

  Failed outright at MOT: 0.2%, against 0.2% of all 2019 cars. The rest were advisories or minor defects.

  Rough price £5–£40 our estimate

  At the viewing: Check the number plate lights work and the plates are clean and legal.

Common 2019 Hyundai I40 diesel MOT failures and advisories

The share of 2019 Hyundai I40 diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

• Tyres
  27% 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
  18% 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.

• Wipers, windscreen and mirrors
  6% of testsRough price £15–£250

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

• Lights and electrics
  6% of testsRough price £10–£80

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

• Suspension
  2% 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.

• Seats and seatbelts
  2% of testsRough price £80–£250

  At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.

Known faults on the 2019 Hyundai I40 diesel

Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.

• Footwell water leak

  All engines

  Some cars leak into the passenger front footwell because of a broken seal.

  At the viewing: Feel the passenger-side carpet for damp.

  Source: Auto Express: used Hyundai i40 review

• Mirror motors, sat nav and steering wheel wear

  All engines

  Door mirror motors fail (the whole mirror has to be replaced), the sat nav can fail after an update, and the steering wheel covering can peel.

  At the viewing: Fold and adjust both mirrors, test the sat nav and look at the steering wheel.

  Source: Auto Express: used Hyundai i40 review

Questions to ask the seller before buying a 2019 Hyundai I40 diesel

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

1. Any recent work on the number plates? (Flagged at MOT 2.2× as often on the 2019 Hyundai I40 diesel as on other cars the same age.)
2. Can I see the service history and receipts for any big jobs?