2017 BMW 120: common problems and MOT failures

What goes wrong more than usual on a 2017 BMW 120?

Parts flagged at MOT more often on the 2017 BMW 120 than on all cars registered in 2017.

• Transmission oil leaks7× usual
  BMW 120

  2.1% All 2017 cars

  0.3%

  Failed outright at MOT: 0%, against 0% of all 2017 cars. The rest were advisories or minor defects.

  Rough price £80–£600 our estimate

  At the viewing: Look under the engine and where the car is usually parked for fresh oil. Ask whether the leak has been looked at.

• Wheels2.8× usual
  BMW 120

  2.5% All 2017 cars

  0.9%

  Failed outright at MOT: 0.9%, against 0.3% of all 2017 cars. The rest were advisories or minor defects.

  Rough price £70–£150 our estimate

  At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

Common 2017 BMW 120 MOT failures and advisories

The share of 2017 BMW 120 MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

• Tyres
  26% 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
  17% 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.

• 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.

• 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.

• Wipers, windscreen and mirrors
  5% of testsRough price £15–£250

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

• Oil and fluid leaks
  3% of testsRough price £80–£600

  At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

Known faults on the 2017 BMW 120

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.

• EGR valve leak (diesel)

  Diesel

  The EGR valve on diesels can leak and, in rare cases, has caused fires. BMW issued recalls.

  At the viewing: Ask a BMW dealer whether the recall work was done. Watch for a strange smell or rough running.

  Source: Parkers: BMW 1 Series (2011-2019) used review

• Engine and lights cutting out

  An electrical fault could cut the engine and exterior lights. There have been three recalls.

  At the viewing: Ask a BMW dealer to confirm the recall work. Flickering lights on the dash can be an early sign.

  Source: Parkers: BMW 1 Series (2011-2019) used review

• Propshaft joint

  The front propshaft joint can fail and leave the car stranded.

  At the viewing: Listen for clunks or vibration from under the middle of the car.

  Source: Parkers: BMW 1 Series (2011-2019) used review

• Water getting in

  Blocked drains at the base of the windscreen can let water damage the electrics. Lights can mist up inside.

  At the viewing: Look for condensation in the lights and damp carpets.

  Source: Parkers: BMW 1 Series (2011-2019) used review

Questions to ask the seller before buying a 2017 BMW 120

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

1. Has the BMW recall work, including the EGR valve, been done?
2. Any recent work on the transmission oil leaks? (Flagged at MOT 7× as often on the 2017 BMW 120 as on other cars the same age.)
3. Any recent work on the wheels? (Flagged at MOT 2.8× as often on the 2017 BMW 120 as on other cars the same age.)
4. Can I see the service history and receipts for any big jobs?