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FORD SIERRA Common Problems & Reliability

Based on 519 MOT tests from 74 vehicles analysed by VehicleScore®. The figures below describe that VehicleScore® sample. Recurring issues seen in VehicleScore® MOT data are not a claim that every FORD SIERRA has the same fault.

FORD SIERRA's have a extremely good reliability rating of 779/999. The score was calculated from the average of every FORD SIERRA 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.

Also check BHP & performance, and road tax for the FORD SIERRA.

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Check the reliability of your Ford Sierra

Enter your registration to see the MOT history for this car.

Ford Sierra 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
Petrol1987800/999Excellent80,741 miles897 vehicles
Petrol1986772/999Very good81,463 miles1,506 vehicles
Petrol1983764/999Very good81,875 miles1,921 vehicles

How reliable is the FORD SIERRA?

Based on 519 MOT tests from 74 vehicles analysed by VehicleScore®.

Vehicles

74

MOT tests

519

Pass rate

80.7%

Median mileage

61,977 mi

Recurring issues seen in VehicleScore® MOT data are inspection findings from this sample. They are not a statement that every FORD SIERRA has the same fault. The median VehicleScore® in this sample is 640 out of 999.

Common FORD SIERRA 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.

Corrosion

VehicleScore® MOT data includes 27 advisory comments and 36 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 corrosion the tester could see on the body or structure. Corrosion already named on a spring, brake, or other component is counted with that component.

What to inspect

Inspect the underside, sills, and subframe for heavy corrosion, especially where an advisory mentions it.

Example MOT wording: OFFSIDE SEAT BELT ANCHORAGE PRESCRIBED AREA IS EXCESSIVELY CORRODED (5.2.6)

Tyre wear

VehicleScore® MOT data includes 24 advisory comments and 4 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 THE LEGAL LIMIT (4.1.E.1)

Exhaust

VehicleScore® MOT data includes 10 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 exhaust leaks, insecurity, or other exhaust defects found at inspection.

What to inspect

Listen for blowing from the exhaust and look for corrosion or loose mounts.

Example MOT wording: CENTRE EXHAUST HAS A MINOR LEAK OF EXHAUST GASES (7.1.2)

Oil leak

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 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))

Other steering issues

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 a steering defect that is not a track rod, rack, or power steering item.

What to inspect

Ask which steering part the tester named and whether it has been repaired.

Example MOT wording: STEERING COLUMN TOP BEARING SLIGHTLY WORN (2.1.2C)

Emissions test issues

VehicleScore® MOT data includes 7 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 an exhaust emissions result. They are counted separately from a warning lamp or a catalytic converter note.

What to inspect

Ask for the emissions printout and whether any repair followed a failed test.

Example MOT wording: EXHAUST EMISSIONS CARBON MONOXIDE CONTENT EXCESSIVE (7.3.B.1A)

Lamp and bulb faults

VehicleScore® MOT data includes 5 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: ANTI-LOCK BRAKING SYSTEM WARNING LAMP INDICATES AN ABS FAULT (3.4.1C)

Parking brake faults

VehicleScore® MOT data includes 5 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 (3.7.B.7)

FORD SIERRA 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
199295782.5%Corrosion, Anti-roll bar issues
199189480.9%Corrosion, Tyre wear
199085280.8%Corrosion, Coil spring issues
198974381.4%Brake disc wear, Corrosion
1988119583.2%Corrosion, Tyre wear
1987810379.6%Corrosion, Oil leak
198694067.5%Corrosion, Suspension arm issues
198468100%No recurring grouped MOT issue in this year sample

What to check when buying a used FORD SIERRA

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.

  • Corrosion. Inspect the underside, sills, and subframe for heavy corrosion, especially where an advisory mentions it.

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

  • Exhaust. Listen for blowing from the exhaust and look for corrosion or loose mounts.

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

  • Other steering issues. Ask which steering part the tester named and whether it has been repaired.

  • Emissions test issues. Ask for the emissions printout and whether any repair followed a failed test.

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

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

Buying a FORD SIERRA?

Common problems tell you what can affect FORD SIERRAs 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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