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BMW 730 Common Problems & Reliability

Based on 1,009 MOT tests from 80 vehicles analysed by VehicleScore. The figures below describe that VehicleScore sample. Recurring issues seen in VehicleScore MOT data are not a claim that every BMW 730 has the same fault.

BMW 730's have a very good reliability rating of 672/999. The score was calculated from the average of every BMW 730 that has had a registered MOT.

We calculated all of the below figures by getting the score from each vehicle make/model/year/fuel, which are each calculated a score. We then generate the average score, taking into account factors such as mileage and emissions.

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Check a BMW 730 before you buy

Enter your registration to see available vehicle history information including service records, MOT, mileage, write-off status, outstanding finance and more.

BMW 730 side view
  • Service history

    Dealer & service records

  • MOT records

    Past & current MOT data

  • Write-off check

    Check for insurance write-offs

  • Finance check

    Outstanding finance & theft checks

Fuel TypeYearReliability ScoreAvg MileageSample Size
N/AN/A811/999Excellent79,780 miles632 vehicles
N/AN/A732/999Very good81,127 miles658 vehicles
N/AN/A635/999Good85,320 miles510 vehicles
N/AN/A509/999Above average88,410 miles579 vehicles

How reliable is the BMW 730?

Based on 1,009 MOT tests from 80 vehicles analysed by VehicleScore.

Vehicles

80

MOT tests

1,009

Pass rate

84.7%

Median mileage

109,763 mi

Recurring issues seen in VehicleScore MOT data are inspection findings from this sample. They are not a statement that every BMW 730 has the same fault. The median VehicleScore in this sample is 652 out of 999.

Common BMW 730 MOT problems

These groups combine equivalent MOT comments, such as the same tyre note on different corners. Counts are comment occurrences in the sample, not a percentage of cars.

Tyre wear

VehicleScore MOT data includes 172 advisory comments and 40 failure comments in this group. Seen as both an advisory and a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record tyres that were worn, damaged, or close to the legal tread depth when the car was inspected.

What to inspect

Check the tread depth and look for uneven wear, cracking, or damage on all four tyres.

Example MOT wording: NEARSIDE REAR TYRE WORN CLOSE TO LEGAL LIMIT/WORN ON EDGE (5.2.3 (E))

Brake pad wear

VehicleScore MOT data includes 31 advisory comments and 3 failure comments in this group. Seen as both an advisory and a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record brake pads that were worn or below the inspection limit.

What to inspect

Ask for recent pad replacement and look at the remaining pad thickness.

Example MOT wording: REAR BRAKE PAD(S) WEARING THIN (1.1.13 (A) (II))

Oil leak

VehicleScore MOT data includes 31 advisory comments in this group. Seen mainly as an advisory. These are comment occurrences, not a share of all cars.

These MOT comments record an oil leak noted by the tester. Shock absorber misting is counted as a damper issue, not as an engine oil leak.

What to inspect

Look under the engine for fresh oil, and check the oil level.

Example MOT wording: OIL LEAK, BUT NOT EXCESSIVE (8.4.1 (A) (I))

Lamp and bulb faults

VehicleScore MOT data includes 10 failure comments in this group. Seen mainly as a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record a lamp or bulb other than a headlamp or indicator.

What to inspect

Switch on the side, brake, fog, and number-plate lamps.

Example MOT wording: SUPPLEMENTARY RESTRAINT SYSTEM WARNING LAMP INDICATES A FAULT (7.1.6 (A))

Windscreen damage

VehicleScore MOT data includes 10 advisory comments in this group. Seen mainly as an advisory. These are comment occurrences, not a share of all cars.

These MOT comments record chips, cracks, or other windscreen damage in the driver’s view.

What to inspect

Look for chips and cracks, especially in the area swept by the wipers.

Example MOT wording: WINDSCREEN HAS DAMAGE TO AN AREA LESS THAN A 40MM CIRCLE OUTSIDE ZONE 'A' (8.3.1D)

Registration plate condition

VehicleScore MOT data includes 9 advisory comments in this group. Seen mainly as an advisory. These are comment occurrences, not a share of all cars.

These MOT comments record a number plate that was deteriorated, insecure, or did not meet the plate rules.

What to inspect

Check both plates are secure, clean, and clearly readable.

Example MOT wording: REAR REGISTRATION PLATE DETERIORATED BUT NOT LIKELY TO BE MISREAD (0.1 (B))

Brake disc wear

VehicleScore MOT data includes 8 advisory comments in this group. Seen mainly as an advisory. These are comment occurrences, not a share of all cars.

These MOT comments record brake discs that were worn, scored, pitted, or corroded.

What to inspect

Look at the disc faces for deep scoring, a lip at the edge, and corrosion.

Example MOT wording: FRONT BRAKE DISC WORN, PITTED OR SCORED, BUT NOT SERIOUSLY WEAKENED (1.1.14 (A) (II))

Parking brake faults

VehicleScore MOT data includes 4 failure comments in this group. Seen mainly as a failure reason. These are comment occurrences, not a share of all cars.

These MOT comments record a parking brake that did not hold well enough or had a component defect.

What to inspect

Test that the parking brake holds the car on a slope and releases cleanly.

Example MOT wording: PARKING BRAKE EFFICIENCY BELOW REQUIREMENTS (1.4.2 (A) (I))

BMW 730 MOT reliability by year

A model year is only commented on when VehicleScore has at least 5 vehicles from that year.

YearVehiclesMOT testsPass rateRecurring issues seen
201865194.1%Tyre wear, Brake pad wear
2016108394%Tyre wear
201555284.6%Tyre wear, Suspension arm issues
20141011883.1%Tyre wear, Brake disc wear
2011711383.2%Ball joint wear, Tyre wear
2006816978.7%Tyre wear, Oil leak

What to check when buying a used BMW 730

This is an inspection checklist based on MOT comments in the VehicleScore sample. It does not mean the car you are looking at has these defects.

  • Tyre wear. Check the tread depth and look for uneven wear, cracking, or damage on all four tyres.

  • Brake pad wear. Ask for recent pad replacement and look at the remaining pad thickness.

  • Oil leak. Look under the engine for fresh oil, and check the oil level.

  • Lamp and bulb faults. Switch on the side, brake, fog, and number-plate lamps.

  • Windscreen damage. Look for chips and cracks, especially in the area swept by the wipers.

  • Registration plate condition. Check both plates are secure, clean, and clearly readable.

  • Brake disc wear. Look at the disc faces for deep scoring, a lip at the edge, and corrosion.

  • Parking brake faults. Test that the parking brake holds the car on a slope and releases cleanly.

Buying a BMW 730?

Common problems tell you what can affect BMW 730s generally. VehicleScore can check the history of the actual car you're considering.

Where does this data come from?

VehicleScore analyses MOT histories from vehicles in its own dataset. Sample sizes vary by model, and a small sample is labelled as such. MOT data records roadworthiness and inspection defects. It does not capture every mechanical or electronic problem a car can have, and a comment on one test is not proof that the model has an inherent fault.

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