2018 Ford Grand C-Max diesel: common problems and MOT failures

What goes wrong more than usual on a 2018 Ford Grand C-Max diesel?

Parts flagged at MOT more often on the 2018 Ford Grand C-Max diesel than on all cars registered in 2018.

• Brake pads1.7× usual
  Ford Grand C-Max

  18.2% All 2018 cars

  10.9%

  Failed outright at MOT: 4.2%, against 2% of all 2018 cars. The rest were advisories or minor defects.

  Rough price £75–£175 (one axle) ClickMechanic

  At the viewing: Listen for squealing or grinding when braking, and look through the wheel at how much pad is left.

• Wipers2× usual
  Ford Grand C-Max

  5.6% All 2018 cars

  2.8%

  Failed outright at MOT: 4%, against 1.8% of all 2018 cars. The rest were advisories or minor defects.

  Rough price £15–£60 our estimate

  At the viewing: Test the wipers and washers on every speed.

• Number plates2.4× usual
  Ford Grand C-Max

  3.4% All 2018 cars

  1.4%

  Failed outright at MOT: 0.4%, against 0.2% of all 2018 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.

• Brake lights3.3× usual
  Ford Grand C-Max

  2.6% All 2018 cars

  0.8%

  Failed outright at MOT: 2.5%, against 0.6% of all 2018 cars. The rest were advisories or minor defects.

  Rough price £10–£80 our estimate

  At the viewing: Ask a friend to check every light while you work the switches: indicators, brake lights, fog lights and reversing lights.

Common 2018 Ford Grand C-Max diesel MOT failures and advisories

The share of 2018 Ford Grand C-Max diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

• Tyres
  38% 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
  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
  11% of testsRough price £10–£80

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

• Wipers, windscreen and mirrors
  9% of testsRough price £15–£250

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

• Suspension
  7% 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
  6% of testsRough price £80–£250

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

Known faults on the 2018 Ford Grand C-Max 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.

• Electrical faults

  All engines

  Electrical faults, mostly non-engine electrics, are the most common problems.

  At the viewing: Test every electrical item, including windows, lights and the infotainment.

  Source: What Car?: used Ford C-Max (2011-2019) reliability

Questions to ask the seller before buying a 2018 Ford Grand C-Max 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 brake pads? (Flagged at MOT 1.7× as often on the 2018 Ford Grand C-Max diesel as on other cars the same age.)
2. Any recent work on the wipers? (Flagged at MOT 2× as often on the 2018 Ford Grand C-Max diesel as on other cars the same age.)
3. Any recent work on the number plates? (Flagged at MOT 2.4× as often on the 2018 Ford Grand C-Max diesel as on other cars the same age.)
4. Can I see the service history and receipts for any big jobs?