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Airbags and safety

Problems with seat belts: symptoms, cost and affected models

We have documented 63 faults with seat belts in 60 cars. The most important by severity and frequency: the centre rear seat belt can also unfasten the left one (Seat Arona and Volkswagen Polo VI), the rear centre seat belt can also unfasten the left one (Seat Ibiza V) and 2015-2016 campaigns over unintended activation of the airbag and seat belt pretensioners (Volkswagen Passat B8).

Documented faults
63
58 of high or critical severity
Cars analysed
60
with at least one fault on this part
Affected models
60
car generations in our database
Garage repair
No data
No reliable published costs

4 sourcesHow we work

How it works and why it fails

Seat belts

Seat belts include the belt itself, the buckle, the anchorage to the body, the pyrotechnic pretensioner that tightens it in a crash and the buckle sensors. The documented defects are usually manufacturing ones (anchorages, buckles, pretensioners) and are corrected with recalls.

What to do

If a buckle does not latch properly, the belt does not retract or the seat belt warning comes on for no reason, have it checked: it is a basic safety item and is also checked at the ITV (the periodic technical inspection in Spain). Use the VIN to check for outstanding campaigns.

General explanation by MotorFiable. The specific faults of each engine and car, with their sources, are on the linked pages.

Common symptoms

The symptoms that come up most often in the documented faults with seat belts. Open each one to see what other faults cause it.

Problems with seat belts by car

Faults documented on specific cars, which occur with any engine. From most to least important.

  1. 1Critical severityVery frequentFrequency: Very frequentSeat AronaThe centre rear seat belt can also unfasten the left oneYes, on cars built from January to July 2018: Seat recalled the Arona because, with the centre and left rear seats occupied at the same time, a sharp lane change could cause the centre buckle to release the left belt too. The repair was free through the official network.
  2. 2Critical severityVery frequentFrequency: Very frequentSeat Ibiza VThe rear centre seat belt can also unfasten the left oneYes, on 2017-2018 units: Seat recalled the Ibiza because, with the rear centre and left seats occupied at the same time, an abrupt lane change could cause the centre buckle to also release the left belt. The repair (a redesigned anchorage) was free at official dealers.
  3. 3Critical severityVery frequentFrequency: Very frequentVolkswagen Polo VIThe centre rear seat belt can also unfasten the left oneYes, on launch-year cars: Volkswagen recalled the Polo because, with the centre and left rear seats occupied at the same time, an abrupt lane change could cause the centre buckle to release the left belt as well. The repair was free at official dealers.
  4. 4Critical severityCommonFrequency: CommonVolkswagen Passat B82015-2016 campaigns over unintended activation of the airbag and seat belt pretensionersOn the first Passat B8s (2015-2016), the British press documents recalls relating to the airbag and seat belt pretensioners, which on certain units could activate without any accident having occurred.Repair: €0
  5. 5Critical severityOccasionalFrequency: OccasionalBMW Serie 3 F30Campaign over defective seat beltsYes: BMW started a campaign in January 2015 over defective seat belts, which the British press places on cars built between 2014 and 2015. Check with the chassis number whether yours is included.
  6. 6Critical severityOccasionalFrequency: OccasionalCitroën Berlingo IIIFront passenger seat belt out of specificationA 2019 recall (ref. R2019393) covers Berlingo IIIs built between July 2018 and November 2019 whose outer front passenger seat belt may not meet its specification; owner reports document genuine seat belt and airbag warnings in that same period.
  7. 7Critical severityOccasionalFrequency: OccasionalCupra LeónDefective front seat belt anchorages (2020-2021)Yes: a 2021 Safety Gate alert, included in the Cupra Leon entry, affects 2,277 Leon and Formentor cars built between 18 September 2020 and 23 August 2021, because manufacturing errors compromise the front seat belt anchorages and may reduce their protection in a crash.
  8. 8Critical severityOccasionalFrequency: OccasionalFiat Panda IIISeat belt buckle anchorage check (March 2015 campaign)In March 2015 Fiat recalled a combined 17,102 Pandas and 500s to check, and replace if necessary, the anchorage system of the seat belt buckles. The source consulted does not detail the exact production window.
  9. 9Critical severityOccasionalFrequency: OccasionalFord Focus IVCampaigns over the seat belt anchor and buckleFord recalled Focus IV cars twice over the seat belt: in 2019 because of an anchor bolt that might be only partly engaged, and in 2023 because of a buckle rivet that might not hold it fully in place. Both campaigns affect specific manufacturing batches, not the whole production run.
  10. 10Critical severityOccasionalFrequency: OccasionalFord Transit CustomDriver's seat belt height adjuster bolt with incorrect tightening torqueIn 2019 a warning was issued that the driver-side front seat belt height adjuster bolt could be incorrectly tightened on Transit Custom built from 6 February to 29 August 2017, with a risk of the anchorage coming away from the adjuster in a crash.
  11. 11Critical severityOccasionalFrequency: OccasionalFord TransitDriver's seat belt height adjuster bolt with incorrect tightening torqueIn 2019 a warning was issued that the bolt on the driver's-side front seat belt height adjuster might be under-tightened on Transits built from 6 February to 29 August 2017, with a risk of the anchorage coming away from the adjuster in a crash.
  12. 12Critical severityOccasionalFrequency: OccasionalHyundai ix35Possible fault with the driver's seat belt pretensionerYes. In 2014 Hyundai recalled 7,550 ix35 units for a possible fault with the driver's-side seat belt pretensioner.
  13. 13Critical severityOccasionalFrequency: OccasionalHyundai Santa Fe IVIncorrectly installed front seat belt pretensioners on 2020 to 2022 unitsYes: a Safety Gate alert from April 2023 states that the front seat belt pretensioners of 994 Santa Fes may be incorrectly installed and not work properly in an accident, increasing the risk of injury. It affects units built between September 2020 and August 2022.
  14. 14Critical severityOccasionalFrequency: OccasionalMercedes-Benz Clase C W203Seat belt buckles that do not latch properly (2003 campaign)Mercedes-Benz recalled C-Class units built in 2003 because the seat belt buckles might not latch correctly, according to a reliability roundup for the model.
  15. 15Critical severityOccasionalFrequency: OccasionalMercedes-Benz Clase E W211Seat belt buckles that do not latch properly (2004 campaign)In February 2004 Mercedes-Benz recalled E-Class cars produced in 2003 because the seat belt buckles might not latch correctly, and replaced them as part of the campaign.
  16. 16Critical severityOccasionalFrequency: OccasionalOpel Astra LPassive safety campaigns: front seat belt pretensioner and curtain airbag (2022-2023)The Astra L had two passive safety campaigns on cars from the spring of 2022: the front seat belt pretensioner might malfunction (March 2023 campaign) and the curtain airbag might be incorrectly positioned (May 2022 campaign).
  17. 17Critical severityOccasionalFrequency: OccasionalOpel Combo EFront passenger seat belt with reduced effectivenessA campaign affected around 1,735 Opel Combo E units built in 2018-2019 in which the front passenger seat belt could have reduced restraint effectiveness.
  18. 18Critical severityOccasionalFrequency: OccasionalPeugeot RifterFront passenger seat belt out of specificationA 2019 recall (ref. r2019392) covers around 1,267 Rifters built between July 2018 and November 2019 whose outer front passenger seat belt may not meet its specification.
  19. 19Critical severityOccasionalFrequency: OccasionalSeat Toledo IVSeat belt pretensioner gas micro-generator that may come loose (2016)Yes: a European alert from August 2017 (A12/1078/17) covers Toledo cars (type KG3, 2017 model year) built between June and October 2016 because, when the seat belt pretensioner fires in an accident, parts of its gas micro-generator can come loose and injure the occupants.
  20. 20Critical severityOccasionalFrequency: OccasionalTesla Model 3Recall for possible seat belt anchorage defect (built 2018-2020)In July 2021 Tesla recalled the Model 3 built between July 2018 and March 2020 because the seat belt anchorage could be defective, with a greater risk of injury in a crash.
  21. 21Critical severityOccasionalFrequency: OccasionalToyota CamryIncorrectly positioned rear seat belt lock springYes, although it affects very few units: European alert A12/00046/19 records a Toyota campaign because the spring in the rear seat belt locking mechanism may have been fitted incorrectly on Camrys built over about two weeks, between late August and early September 2019.
  22. 22Critical severityOccasionalFrequency: OccasionalVolvo S80 IIVolvo S80 front seatbelt anchor cable: it can lose strength over timeYes: in 2020 Volvo recalled (code R10029) Volvo S80 cars built between 7 February 2006 and 8 April 2016, because the strength of the steel cable that secures the front seatbelt can decrease over time and reduce the belt's protective effect in a crash. The remedy is to replace the fixing.
  23. 23Critical severityOccasionalFrequency: OccasionalVolvo V70 IIIVolvo V70 front seatbelt anchor cable: it can lose strength over timeYes: in 2020 Volvo recalled (code R10029) Volvo V70 cars built between 14 March 2007 and 27 April 2016, because the strength of the steel cable that secures the front seatbelt can decrease over time and reduce the belt's protective effect in a crash. The remedy is to replace the fixing.
  24. 24Critical severityOccasionalFrequency: OccasionalVolvo XC70 IIIVolvo XC70 front seat belt anchorage cable: it can lose strength over timeYes: in 2020 Volvo recalled (code R10029) Volvo XC70 cars built between 9 May 2007 and 30 May 2016, because the strength of the steel cable that secures the front seat belt can decrease over time and reduce the belt's protective effect in a crash. The remedy is to replace the fixing.
  25. 25High severityOccasionalFrequency: OccasionalHyundai i10 IIIRear right seat belt pretensioner that may act abnormally (2020 i10)Hyundai recalled the i10s built between 5 September and 16 October 2020 (campaign 21DT02) because the rear right seat belt pretensioner could behave abnormally when triggered in a crash. The belt's barcode is checked and the belt is replaced if it falls within the affected range.
  26. 26High severityOccasionalFrequency: OccasionalKia ProCeedCampaign for defective seat belt pretensionersAccording to the fiches-auto.fr fiche, in May 2022 there was a campaign for defective seat belt pretensioners that affected the Ceed III; the fiche does not specify whether it includes the ProCeed or its scope in Spain.
  27. 27High severityOccasionalFrequency: OccasionalLancia Ypsilon IIIFront seat belt pretensioner with badly crimped gas micro-generator (September to December 2016 cars)Yes: in August 2017 a recall was notified over a faulty crimping of the gas micro-generator in the front seat belt pretensioner of the Ypsilon built between September and December 2016. If the pretensioner activates, defective parts could come loose and injure the occupants.
  28. 28High severityOccasionalFrequency: OccasionalMercedes-Benz Clase C W206Passenger seat belt anchor cover that can come offMercedes-Benz has recalled C-Class W206 units because the cover of the passenger seat belt's lower anchor can come off, which compromises the restraint of the occupant in an accident.
  29. 29High severityOccasionalFrequency: OccasionalMitsubishi Outlander IIIRight-hand second-row seat belt incorrectly fittedOn a small batch of model-year 2020 Outlanders and Outlander PHEVs, the seat belt in the right-hand rear seat of the second row may have been fitted incorrectly, with a risk of injury from poor restraint in a crash. Mitsubishi put it right with a recall (Safety Gate A12/01373/20).
  30. 30High severityOccasionalFrequency: OccasionalRenault Trafic IIIBuckles and guides of the third-row seat beltsSafety Gate lists two Renault recalls from 2017-2019 on the Trafic's third-row seat belts: faulty buckles that might not restrain a passenger or a child seat, and badly fitted plastic guides that might jam.
  31. 31High severityOccasionalFrequency: OccasionalVolvo S60 IFatigue of the steel cable anchoring the front seat beltsIn July 2020 Volvo recalled around 2.2 million cars worldwide over possible wear of the steel cable that secures the front seat belts. The list includes the S60 built between 2006 and 2018 without separating generations, so S60 I models built from 2006 may be affected.
  32. 32High severityOccasionalFrequency: OccasionalVolvo S80 I2001 recalls: rear seat belt anchorage and ISOFIX bracket bolts under-tightened on the Volvo S80In 2001 Volvo recalled small batches of the S80 (and the new V70) in the UK for insufficiently tightened bolts: those of the ISOFIX anchorage bracket in the rear floor (8 vehicles, R/2001/038) and those of the outer rear seat belts (410 vehicles, R/2001/039). It was corrected by checking and tightening the bolts.
  33. 33High severityOccasionalFrequency: OccasionalVolvo V60 ISteel cable fatigue in the front seat belt anchorageIn 2020 Volvo recalled V60 cars built between 22 June 2010 and 27 August 2018 because the steel cable that holds the front seat belts can lose strength over time and reduce restraint in a crash. Volvo said it was not aware of any accidents or injuries because of this.
  34. 34High severityOccasionalFrequency: OccasionalVolvo V60 IFront passenger seat belt buckle that may not fasten properly and release in a crashA European alert from January 2017 (A12/0058/17) warned that the front passenger seat belt buckle in V60 and V60 Cross Country cars of model years 2015 and 2016 might not fasten properly and, in a crash, could separate from the belt latch.
  35. 35Critical severityRareFrequency: RareBMW Serie 3 G20Seat belt buckle sensor that wrongly detects the occupant as unbuckled (2019-2020)Yes: on 2019-2020 330i (G20) cars, the front seat belt buckle sensor can wrongly detect a buckled-up occupant as unbuckled, causing the airbag and pretensioner to deploy inappropriately in a crash.
  36. 36Critical severityRareFrequency: RareCupra FormentorFront seat belt could work looseIn August 2021 Cupra recalled a series of Formentors because the front seat belt could work loose with use instead of maintaining constant tension. Auto Express documents the recall, although we have not found the number of units or the official reference.Repair: €0
  37. 37Critical severityRareFrequency: RareDacia SpringCampaign for the rear right seat belt retractor (built April to October 2022)Dacia issued a recall in November 2022 for Spring cars built between April and October of that year because the rear right seat belt retractor could malfunction, which reduces its restraining capacity in an accident.
  38. 38Critical severityRareFrequency: RareFiat 500XLimited airbag and seat belt pretensioner function because of the ORC control unit (2017-2019 build)Yes: a campaign covers vehicles built between 24 October 2017 and 18 April 2019 in which the occupant restraint control unit (ORC) could limit the operation of the airbag and seat belt pretensioners; it is corrected with a software update.
  39. 39Critical severityRareFrequency: RareFord C-Max IISeat belt anchor bolt only partially engagedIn 2019 Ford recalled C-MAX cars built between May and September of that year because the bolt anchoring the seat belt could be only partially engaged.
  40. 40Critical severityRareFrequency: RareFord Fiesta VRecall over the rear seat belt mounting (limited series)Ford recalled a limited series of the Fiesta V over a problem with the mounting of the rear seat belts, according to fiches-auto.fr, with no further detail on dates or chassis numbers.
  41. 41Critical severityRareFrequency: RareFord Kuga IIFire risk from the B-pillar insulation after the seatbelt pretensioner is triggeredIn 2017 Ford recalled around 30,000 Kuga models built between July 2012 and June 2014 because the B-pillar insulation could catch fire in a collision in which the front seatbelt's pyrotechnic pretensioner was triggered.
  42. 42Critical severityRareFrequency: RareJeep RenegadeLimited airbag and seat belt pretensioner function due to the ORC control unit (built 2018-2019)Yes: two independent sources, one French and one German, document a September 2019 campaign for vehicles built between March 2018 and April 2019 in which an incorrect update of the occupant restraint control unit (ORC) could limit the function of the airbag and seat belt pretensioners.
  43. 43Critical severityRareFrequency: RareJeep RenegadePossible fault with the centre rear seat belt (built 2014-2015)Yes: a May 2015 campaign covers vehicles built between October 2014 and January 2015; one source says the centre rear seat belt buckle could open in a crash and another that the belt retractor needed to be checked.
  44. 44Critical severityRareFrequency: RareKia Ceed IIIRecall for seat belt pretensioner defect (2021-2022)On Kia Ceed III cars built in 2021 and 2022, a seat belt pretensioner defect can cause it to activate incorrectly in an accident and its cover can come off by itself, according to a recall recorded by Germany's KBA.
  45. 45Critical severityRareFrequency: RareKia Sportage IIIThe driver's seat belt pretensioner may not operate in a crashYes: Kia recalled Sportage SL cars built between October 2011 and November 2012 (7,219 vehicles in the UK, together with the Kia Soul of those dates) because the driver's seat belt pretensioner may not work correctly during a collision, according to the UK's DVSA.
  46. 46Critical severityRareFrequency: RareKia XCeedRecall for a seat belt pretensioner defect (2021-2022)On Kia XCeed units built between November 2021 and February 2022, a defect in the front seat belt pretensioner can cause it to activate incorrectly in a collision, according to a May 2022 recall reported by Fiches-auto.fr.
  47. 47Critical severityRareFrequency: RareMercedes-Benz Clase A W169Faulty seat belt buckle (August 2008 build window)Mercedes-Benz recalled a very specific build window of A-Class W169 cars built between 7 and 13 August 2008 because the seat belt buckle could fail and release under extreme load, such as in a crash.
  48. 48Critical severityRareFrequency: RareMercedes-Benz Clase B W245Defective seat belt buckle (August 2008 build window)Mercedes-Benz recalled a very specific window of B-Class W245s built between 7 and 13 August 2008 because the seat belt buckle could fail and open under extreme load, such as in a crash.
  49. 49Critical severityRareFrequency: RarePeugeot 2008 IDriver's seatbelt may fail (July 2015 production)Yes: a February 2016 campaign (ref. r2016031) covers a one-day production batch, 14 July 2015, in which the driver's seatbelt might fail.
  50. 50Critical severityRareFrequency: RareRenault Trafic IIIBadly configured crash sensors: airbags and pretensioners may not activateSafety Gate lists a Renault recall for Trafic vans built between February 2021 and November 2023: the crash sensors may be badly configured and the airbags and pretensioners may not activate as they should.
  51. 51Critical severityRareFrequency: RareToyota Aygo IIThe stitching of the centre rear seatbelt may tearA 2021 campaign inspected Aygo cars built between August and October 2020 because the inner stitching of the rear seatbelt could tear, compromising its restraining function in an accident.
  52. 52Critical severityRareFrequency: RareVolkswagen Touran IIMarch 2017 campaign for a possible airbag and seat belt pretensioner faultIn March 2017, Volkswagen recalled part of the second-generation Touran production over a possible fault in the airbag and seat belt pretensioners, according to the specialist British press, with no further detail on the exact technical cause or the number of units.Repair: €0
  53. 53Medium severityOccasionalFrequency: OccasionalMazda CX-3The rear seat belts may not retract properlySeveral owners describe the seat belt in a rear seat no longer retracting normally after a while, staying slack or locked, without the manufacturer acknowledging it as a systemic defect.
  54. 54High severityRareFrequency: RareAudi A3 IVFaulty seatbelts (174 cars)In October 2022, Audi recalled 174 A3 cars built between September and November 2021 because they had faulty seatbelts fitted.Repair: €0
  55. 55High severityRareFrequency: RareBMW Serie 1 F40Defective bolts in the seat belt anchorage (around 64 units, 2021 build)Yes, although it affects very few units: BMW documented defective bolts in the seat belt anchorage on around 64 1 Series F40 vehicles from the 2021 build year, with a higher risk of injury in a crash.
  56. 56High severityRareFrequency: RareFiat TalentoInsufficient tightening torque on the third-row seat belt boltsIn October 2019 Fiat notified that the bolts of the third-row seat belt mountings on the Talento built between August 2017 and March 2019 were tightened to an insufficient torque and could fail in a crash.
  57. 57High severityRareFrequency: RareFord Fiesta VIII2019 and 2021 campaigns over seat belt system faultsFord recalled the Fiesta VIII in December 2019 and again in April 2021 over seat belt system "glitches". Auto Express does not detail whether the second campaign extends the first or the number of vehicles affected.
  58. 58High severityRareFrequency: RareOpel Vivaro BBadly manufactured third-row seat belt guidesIn November 2018 Opel reported that some components of the third-row seat belt guide rail of the Vivaro B (March 2017 to July 2018) might be badly manufactured and fail to guarantee the belt's protection.
  59. 59High severityRareFrequency: RareRenault Twingo IIIFaulty seat belt buckle (built September-October 2014)Yes: Twingo III cars built between 29 September and 29 October 2014 were part of a recall over a faulty seat belt buckle, according to a German used-car guide.
  60. 60Low severityCommonFrequency: CommonRenault Scénic IIIFalse electronic warnings: seat belt, generic faults and R-Link bugsSeveral Scénic III owners describe unfastened seat belt warnings with the seat empty, fault messages with no apparent cause and occasional glitches in the R-Link multimedia system, without Renault acknowledging it as a series fault.
  61. 61Medium severityRareFrequency: RareKia Picanto IIFrayed seat beltsAccording to the fiches-auto.fr reports, several owners of the 2011 Picanto had to replace frayed seat belts at around 40,000 km, with bills of between €400 and €680 in France. No official recall is on record.
  62. 62Medium severityRareFrequency: RareMazda 2 IIMazda 2 (DJ) rear seat belt retractors lockingAccording to owner reports collected by fiches-auto.fr, the rear seat belt retractors on the 2015 Mazda 2 can lock or fail to retract the belt properly (3 or more cases among 65 reports).
  63. 63Low severityOccasionalFrequency: OccasionalPeugeot 3008 IIIScreen freezes, erratic voice control and false rear seat belt warningsSeveral Peugeot 3008 III owners describe black screens, system freezes and erratic voice recognition from the first few kilometres, as well as rear seat belt warnings that appear with nobody sitting there.

Problems with seat belts by make

Problems with seat belts in your car

3 cars have several documented faults with seat belts. Choose yours to see only the ones that affect them, by engine and by year.

Jeep 1
Renault 1
Volvo 1

How much it costs to repair a fault with seat belts

Sorted from the most expensive repair to the cheapest. Prices in Spain including VAT (parts and labour); what each figure includes is on its page.

How we calculate costs · The most expensive repairs across all engines

Frequently asked questions

Which cars have problems with seat belts?

Among those we have analysed: Seat Arona (the centre rear seat belt can also unfasten the left one), Seat Ibiza V (the rear centre seat belt can also unfasten the left one), Volkswagen Polo VI (the centre rear seat belt can also unfasten the left one), Volkswagen Passat B8 (2015-2016 campaigns over unintended activation of the airbag and seat belt pretensioners), BMW Serie 3 F30 (campaign over defective seat belts), Citroën Berlingo III (front passenger seat belt out of specification), Cupra León (defective front seat belt anchorages (2020-2021)) and Fiat Panda III (seat belt buckle anchorage check (March 2015 campaign)). In total, 60 cars with documented faults with seat belts.

How much does it cost to repair a fault with seat belts?

It depends a lot on the engine or car. At a dealer, from €0 to €0, including VAT, based on the 4 faults with a documented cost. The most expensive is 2015-2016 campaigns over unintended activation of the airbag and seat belt pretensioners (Volkswagen Passat B8).

What symptoms does a fault with seat belts cause?

The most frequently cited in the documented faults: seatbelt fault warning light or message, airbag warning light on, intermittent electronic warnings or sensor faults and screen or infotainment system freezes or restarts.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. 1.Used Volkswagen Passat (Mk8, 2014-2021) review and buyer's guideAuto Express · Motoring press · consulted 27 September 2026
  2. 2.Used Cupra Formentor (Mk1, 2020-date) buyer's guide: stylish and family-friendlyAuto Express · Motoring press · consulted 27 September 2026
  3. 3.Used Volkswagen Touran reviewAuto Express · Motoring press · consulted 27 September 2026
  4. 4.Used Audi A3 Mk4 (2020-date) buyer's guide: classy used hatchbackAuto Express · Motoring press · consulted 27 September 2026