Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
15-308-23R
This Service Information Bulletin outlines a systematic procedure for diagnosing parasitic draw (dark/standby current) in vehicles experiencing battery drain when the ignition is off, leading to no-start conditions or frequent jump-starts.This is an revised version of the original bulletin.
15-304-22R
This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns. (This is an revised version of the original bulletin.)
Article Locator
Techtips newsletter locator index.
15-333-25R
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. This is an revised version of the original bulletin
SubaruNet Annoucement (E
This announcement is requesting retailer staff to retain the EyeSight protective hood covers from Generation 4 EyeSight cameras.
01-167-08R
This bulletin contains additional information for recommended materials listed in the Service Manuals for individual models.
SubaruNet Announcement (R
This announcement provides information on the remanufactured CVT transmission program.
07-240-26R
This Service Information Bulletin was developed to provide interim guidance for vehicles exhibiting DTC B2A20.
15-337-26
This bulletin announces the design change made to the front speaker assembly which have been redesigned with higher durability damper. This change was introduced to prevent internal interference of the front speaker.
03-97-26
This bulletin announces the service manual correction regarding clutch master cylinder reservoir service procedures.
05-97-26
This Bulletin provides the diagnostic procedures to be followed when addressing customer concerns of steering wheel/vehicle body vibration when driving at highway speeds when tire/wheel balance is suspected.
10-105-25R
This bulletin announces the new procedure and Warranty Fail Code for FirstTime air conditioning (A/C) performance concerns possibly resulting from an undetected A/C refrigerant leak.
15-219-18R
This bulletin contains information to help when attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully
SubaruNet Announcement (A
This announcement provides information on the use of aftermarket services or tools for programming immobilizer keys/fobs.
Subaru Tech Tips Special
This Subaru service and technical support line newsletter provides information on the next phase of TechShare.
15-300-22R
This Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES).
Subarunet Announcement (E
This announcement has been created to address difficulties with software updates on Subaru Select Monitors with DST-010 interface firmware has been updated.
18-226-25R
This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
15-333-25
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
Subaru Tech Tips (Article
Subaru service article locator.
15-130-08R
This bulletin provides information on the load carrying capacity reduced label when a port-installed or retailer-installed accessory exeeds 1.5 percent of the GVWR or 100 pounds, which ever is lower.
07-233-25R
This Bulletin provides details on a new formal testing, charging, and tracking procedure for all 12-volt batteries in new vehicle inventory.
07-236-25
This Bulletin outlines a comprehensive update to the dark current/parasitic draw diagnosis & testing procedures.
07-233-25
This Bulletin provides details on a new formal testing, charging, and tracking procedure for all 12-volt batteries in new vehicle inventory wjhich must be tested and reported every 30 days.
15-266-20R
This Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru.
15-320-24R
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
SubaruNet Announcement
Subaru of America, Inc. will release an OTA to perform a software update to the DCM. This is a preventive OTA.
13-108-25
This bulletin provides information on paint codes for vehicles in the 2026 line up.
Subaru Service Technical
Subaru Service Technical Support Newsletter special edition.
SubaruNet Annoucement
This announcment provides information on the release of the latest software updates to the Subaru Midtronics DSS-5000 Battery Diagnostic tool.
15-251-19R
This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
SubaruNet Announcement (S
This announcement is to bring attention to the OTA for In-vehicle service appointment scheduler and In-vehicle message center.
01-168-09R
The purpose of this bulletin is to provide replacement key and immobilizer information along with an overview of the Subaru Lock Information web-site.
02-192-24R
This Bulletin announces the diagnostic procedures to be followed when diagnosing engine oil leakage on FA and FB type engines.
14-31-25
This Bulletin announces availability of a User Guide and an informative video to supplement the recent releases to retailers of the SOA321152 and SOA321153 Terminal Test Kits.
09-51-08R
The purpose of this bulletin is to advise of SOA’s revised Catalytic Converter Recycling Program shipping procedure.
Subarunet Announcement
This announcement is in regard to special service tool shipment will be shipped directly to the Subar retailers during February.
RC5 Head Unit OTA
A head unit OTA will be available via cellular network for Mid and High Grade CP1.5 head units.
07-59-07R
This bulletin is for information purposes only.The bulletin adresses design changes of the headlamps and rear combination lamps, where moisture and or condensation may develop on the inside of the lamp lenses.
15-298-22R
This Service Information Bulletin announces the preferred practices to be used when handling vehicles equipped with Gen2 Telematics which are enrolled in the Subaru STARLINK® Security Plus Service featuring Stolen Vehicle Recovery Plus with Immobilizer.
02-192-24
This Service Information Bulletin announces the diagnostic procedures to be followed when diagnosing engine oil leakage on FA and FB type engines.
07-178-21R
This Service Information bulletin is being released as guidance for proper testing and charging of vehicle batteries.
15-320-24
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
02-191-22R
This bulletin announces availability of the NEW genuine Subaru engine oil filter.
03-94-24
This bulletin outlines the judgment criteria to be used when inspecting front transverse link bushings to reduce unnecessary bushing replacement.
Thermo Control Valve Vide
This thermo control valve video contains information on the replacement of thermo control valve.
13-107-24
This Bulletin provides SOA paint codes to help eliminate possible confusion for 2025 MY vehicles.
05-91-24
This Bulletin provides guidance for diagnosing a leaking front or rear suspension strut.
06-90-24
This bulletin provides diagnosis and procedure information to be applied when diagnosing potential fluid leaks on front and rear brake calipers. This information has been developed to reduce unnecessary brake caliper replacement.
15-285-21R
This Bulletin provides reference tables and photos to use for determining the infotainment head unit supplier and generation.
12-249-23R
This bulletin announces the recommended cleaning procedures to followed when encountering vehicles with long time exposure to pollen on painted surfaces on vehicles imported from Japan. This bulletin does not apply to SIA built vehicles.
02-136-12R
The purpose of this Bulletin is to provide procedures for the diagnosis and repair of oil seepage.
04-28-22R
This bulletin announces the repair procedure to address rare cases of a squeaking-type sound occurring when turning the steering wheel.
15-302-22
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
18-226-21
The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
Subaru Tech Tips
Special Edition, 2012 current model subaru evaporative diagnostics and smoke testing.
15-298-22
This Bulletin announces the preferred practices to be used when handling vehicles equipped with Gen2 Telematics which are enrolled in the Subaru STARLINK® Security Plus Service featuring Stolen Vehicle Recovery Plus with Immobilizer.
04-28-22
This bulletin announces the repair procedure to address rare cases of a squeaking-type sound occurring when turning the steering wheel.
15-192-22R
This bulletin has been developed to outline the steps for gathering basic essential information during diagnosis and repair of the Infotainment concerns. (Applicable to all models with Harman or Denso CP1 Infotainment).
02-189-22
This Bulletin announces design changes to the engine oil and CVT fluid drain plugs.
02-188-21
This bulletin announces an additional service procedure for timing chain and / or cam sprocket replacement on FA and FB type engines.
05-79-20R
This bulletin announces a change made to the wheel lug nuts.
18-215-21
This bulletin provides a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
15-177-14R
This bulletin provides information to help diagnose and address different conditions relating to customer concerns which may arise when operating the new-generation âGen 2â and âGen 2.1â F10 Navigation and Display Audio systems.
02-187-21
This bulletin outlines changes in the service procedure for engine oil pressure inspection.
18-211-21
Description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
12-309-21
This bulletin announces a design change made to the replacement front console box cover.
14-22-16R
To help reduce confusion and increase technician efficiency, Subaru of America, Inc. (SOA) has developed the following cross reference list to help locate the appropriate Special Service Tool.
05-79-20
This Service Information Bulletin announces a change made to the wheel lug nuts.
10-19-20
The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
18-201-20
The purpose of this bulletin is to provide a desription of current changes to service manuals available via the Subaru Technical Information System (STIS) web site.
18-200-20
This bulletin provides a description of current changes to Service Manuals.
15-266-20
This Service Information Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2 Telematics system equipped Subaru.
15-267-20
This document discusses some of the conditions that may trigger an Automatic Collision Notification (CAN) (Gen1) or Advanced Automatic Collision Notification (AACN) (Gen2), without a collision, airbag deployment, or accident taking place.
06-76-20
This service Information bulletin provides precautions to follow when servicing the Brembo brake calipers utilized on the models listed. Because of their aluminum construction, it is critcal to take extra care when servicing.
01-181-20
All Models (Vehicle Cleaning- COVID-19Best Practices)
12-284-20
This bulletin announces availability of new interior door handles which will address isolated concerns of the chrome finish peeling.
17-17-13R
This bulletin provides information regarding Event Data Recorder (EDR) functionality which has been incorporated into the airbag system.
18-198-20
The purpose of this bulletin is to provide a description of current changes to Service Manuals available via the Subaru Technical Information System (STIS) web site.
07-169-20
This Service Information bulletin describes a change made to the labels applied to the push to start switches used on the models listed.
15-199-16R
This bulletin announces reprogramming file availability and the software installation procedure to address a group of operational concerns received from the field and listed below involving the Clarion Display Audio unit with 6.2" display.
07-167-20
This bulletin announces availability of a new stop lamp switch for the models listed above equipped with LED - type rear combination lamps.
15-190-15R
This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure. The exchange program policy can also be found in Sections 8.4.9 and 11.2.10 of your Claims Policies and Procedures Manual found in subarunet.
02-163-12R
The purpose of this Bulletin is to provide procedures for the diagnosis and repair of oil seepage which may be coming from the areas listed below: There are six areas that should be closely inspected if an oil leak is reported by the customer: 1. The 6mm tapped hole casting boss area in the left-hand camshaft cap 2. The sealing surfaces between the camshaft carrier and cylinder head 3. The sealing surface between the cylinder block and the upper oil pan 4. The sealing surfaces of the front timing chain cover 5. The sealing surfaces between either the left or right-hand camshaft cap and/or camshaft carrier 6. The sealing surfaces between the cylinder head block-off plate (on M/T models) or the vacuum pump assembly (on A/T models)
12-271-19
This Service Information Bulletin announces a design change made to the rear bumper cover side mounting brackets. These new brackets provide increased clearance between the edges of the bumper cover and the corresponding quarter panels. This change will prevent them from contacting each other and possibly damaging their painted surfaces.
15-244-19
This bulletin announces availability of individual service parts and provides an installation procedure for the A/C compressor clutch assembly. Previously, a complete compressor assembly was necessary if any of the clutch components required replacement.
06-68-19R
This Service Information bulletin announces instruction for application of additional lubrication between the brake caliper support and pad clips. This will prevent the pad from dragging due to corrosion buildup which may result in uneven or premature wear of the replacement brake pads. This additional instruction applies to all models with brake pads using the upper and lower pad clips and has been added to the brake pad installation procedures found in the related Service Manuals.
02-163-16R
This Service Information bulletin provides new inspection and repair procedures for AVCS (Active Valve Control System) -related DTCs on the FA and FB engine equipped models listed above. The applicable Service Manuals will be revised with this new information in the near future.
12-267-19
This bulletin announces availability of a new retaining plate and installation method to address gapping conditions which may develop between the front bumper cover and fender.
09-69-19
This bulletin provides an additional service procedure for replacing the pulsation dampers located on both low-pressure fuel delivery pipes as shown in the illustration below. Although the BRZ Service Manual does not currently show the dampers and the required replacement seals as separate components, the Electronic Parts Catalog (EPC) does provide exploded view and individual part number ordering information.
02-170-17R
This bulletin announces part information for new Active Valve Control System (AVCS) oil control solenoid valves (OCV) which contain a redesigned internal oil seal. The new seal will eliminate potential oil seepage into the wire harness connector portion of the valve. If oil seeps into the connector, over time, the Check Engine lamp may illuminate and set various AVCS-related DTCs.
02-178-18R
This Service Information bulletin announces a design change made to the rubber timing hole access plug to improve its retention and prevent water intrusion into the converter case.
02-133-12R
The purpose of this bulletin is to clarify the proper installation direction of the valve springs used on the FA engine. The springs have a light blue paint mark identifier as shown in the chart below.
06-68-19
This Service Information bulletin announces instruction for application of additional lubrication between the brake caliper support and pad clips. This will prevent the pad from dragging due to corrosion buildup which may result in uneven or premature wear of the replacement brake pads. This additional instruction applies to all models with brake pads using the upper and lower pad clips and has been added to the brake pad installation procedures found in the related Service Manuals.
09-54-12R
This bulletin provides a procedure to address customer concerns of a high-pitched ?chirp?, ?squeak? or ?cricket? sound heard coming from the engine?s Direct Injection (DI) high-pressure fuel pump. Not all DI pumps may exhibit this sound. Some vehicles may have components which in combination with certain fuel temperatures and / or formulations, may result in aeration of the fuel within the body of the pump and cause this sound. This result is non-detrimental to the vehicle. Production changes have been made to eliminate the source of the sound.
07-133-18
This Service Information Bulletin announces design changes to the engine?s knock sensor which will help improve vehicle assembly line efficiency and increase durability. In some cases, the Check Engine light may illuminate and a knock sensor-related DTC set in the ECM memory: P0327, P0328, P0332 and P0333. The knock sensor for DIT engines is now utilized for NA engines to improve durability and resistance to heat.
12-251-18
This bulletin provides a service procedure to address a gap between the top edge of the door and the instrument panel on the models listed as shown in the photo below. The gap may also make the glove box door difficult to close fully.There is a latch to keep the glove box closed on both sides of the glove box door. If the door is closed without using enough force to engage both latches or by pushing it shut on just one side instead of in the middle, one may close and not the other. Over time, if the door is not fully closed with both latches, high cabin temperatures along with weight of the items inside the glove box may cause the assembly to deform slightly and a gap to develop.
07-128-18R
This Service Information bulletin provides a measurement and adjustment procedure for the stop lamp switch. An improperly adjusted (or faulty) stop lamp switch can cause any of the DTCs listed above to set and result in the related system?s warning lamp to illuminate.
12-250-18
This bulletin announces a design change made to the rear bumper cover (face). To insure a proper fit of the new cover, the rear edge portion of the existing inner mud guards (splash shields) will need to be modified slightly in specific areas. In addition, plastic arch caps (plugs) are inserted into unused holes in the rear wheel arch lip of the new cover to fill unused mounting holes for optional accessory mud guards when not installed.
05-65-18
This bulletin announces a change made to the front lower control arm ball joint boots. The boot material has been changed to provide increased resistance to damage from ozone.
03-80-18
This Service Information bulletin announces a change to the flywheel (pilot) bearing to a ?environmentally friendly? type which is compliant with the REACH (Registration, Evaluation, Authorization and restriction of CHemicals) guidelines being used in the European Union (EU). This change is not intended to address any specific customer concern.
12-231-18R
This bulletin announces a design change to the air vent grille located in the lower portion of the trunk (or cargo) area. The shutters of the vent grille are designed to open briefly and relieve cabin pressure when the doors are shut with the windows fully closed. The vent grilles have rubber ?shutters? which occasionally, may catch on the frame (case) portion and not close properly allowing outside air / odor to enter the cabin.
12-231-18
( 2017-2018MY Impreza - 5 Dr Only)
02-170-17
This bulletin announces part information for new Active Valve Control System (AVCS) oil control solenoid valves (OCV) which contain a redesigned internal oil seal. The new seal will eliminate potential oil seepage into the wire harness connector portion of the valve. If oil seeps into the connector, over time, the Check Engine lamp may illuminate and set various AVCS-related DTCs.
02-166-17R
This bulletin outlines design changes made to the upper oil pan assembly on FA and FB engines used on the models listed above. There have been isolated cases where the sealer used between the upper oil pan and the crankcase has become displaced resulting in engine oil seepage. Revisions made to the upper oil pan casting: * The mating flange thickness of the casting in the area identified as the cause for the seepage has been increased by 5.5mm. (See images provided in the Parts Information section below.) This thickness increase creates the need for a longer bolt to provide proper tightening and retention. * An additional mounting point has been added to the ribbing inside the casting to increase retention of the steel baffle plate and eliminate vibration.
02-166-17
This bulletin outlines design changes made to the upper oil pan assembly on FA and FB engines used on the models listed above. There have been isolated cases where the sealer used between the upper oil pan and the crankcase has become displaced resulting in engine oil seepage.
02-164-16
This Service Information bulletin announces a design change to the internal contact portion of the oil pressure switch to increase durability
01-177-16
This Service Information bulletin provides notice of an additional step to follow when diagnosing DTC P219A- ?Air-Fuel Ratio Imbalance (Bank 1)?.
216316
This Service Information bulletin provides new inspection and repair procedures for AVCS (Active Valve Control System) -related DTCs on the FA and FB engine equipped models listed above. The applicable Service Manuals will be revised with this new information in the near future.
07-109-16
This bulletin provides a procedure to address a hard starting condition which may occur on vehicles repeatedly driven for short distances. For example: This condition could arise while the vehicle is in inventory for an extended period of time, regularly started, moved around the lot then shut off before the engine comes up to full operating temperature. This type of repeated, short trip driving can cause carbon deposits to accumulate on the spark plugs and over time, the hard start condition to develop. This condition may take 60 or more similar ?cycles? as described above to manifest so, by description alone, it would be very rare for this to happen and quite challenging to duplicate.
15-177-14M2
When ordering exchange units from Fujitsu Ten through their online web site, some new information will soon be requested and in some cases required. To assist with that, a new Bluetooth Interview Form is available to facilitate the completion of an exchange order. The form is available on Subarunet at Service Operations & Technical >> Forms.
15-197-16
Although Fujitsu TEN (F10) Navigation units utilize an externally (faceplate) accessible MicroSD memory card, the MicroSD card used in Clarion display audio units is internal and not accessible. In the event a ?Check SD Memory Card? alert message appears on the faceplate display, an exchange display audio unit must be ordered through the applicable Clarion audio exchange procedure.
05-61-16
This bulletin announces a design change to the front strut mounts intended to address customer concerns of a popping-type sound which may be heard when making low speed turns.
15-177-14M
When ordering exchange units from Fujitsu Ten through their online web site, some new information will soon be requested and in some cases required. Exchange order entry will now request a date and time when condition was last duplicated. The customer?s phone carrier, phone make and model will be required when Bluetooth or Connectivity failure sections are selected.
Tech tips
This is the final PDF for the 2016 January TechTIPS, please use and distribute as needed.
12-190-15R
THIS BULLETIN PROVIDES A PROCEDURE TO ADDRESS CUSTOMER CONCERNS OF A CREAKING SOUND HEARD WHEN OPERATING THE CLUTCH PEDAL. THE CAUSE OF THE SOUND HAS BEEN IDENTIFIED AS A VERY SLIGHT AMOUNT OF MOVEMENT BETWEEN THE 2 LAYERS OF METAL (CIRCLED IN YELLOW) WHICH FORM THE SPECIFIC CLUTCH AND BRAKE PEDAL ASSEMBLY MOUNTING BRACKET SHOWN IN THE ILLUSTRATION AND PHOTOS BELOW.
16-96-15
THIS BULLETIN ANNOUNCES AVAILABILITY OF REPROGRAMMING FILES FOR OPTIMIZING THE TRANSMISSION CONTROL MODULE (TCM) ON ALL 2015 AND SOME EARLY-PRODUCTION 2016MY VEHICLES TO CONTROL AN ENGINE IDLE SPEED FLUCTUATION CONDITION WHEN IN PARK OR NEUTRAL. THE CAUSE IS INCORRECT OPERATION OF A BACK-UP PROGRAM THE TCM USES IN THE EVENT OF A TURBINE SPEED SENSOR PROBLEM. AFFECTED VEHICLES MAY SEE A FLUCTUATION OF APPROXIMATELY 200 RPM (BETWEEN 600 800 RPM IDLE SPEED).
02-162-15R
THIS SERVICE INFORMATION BULLETIN ANNOUNCES A DESIGN CHANGE TO THE OIL PRESSURE SWITCH ASSEMBLY. NICKEL PLATING HAS BEEN APPLIED TO THE INTERNAL SWITCH CONTACTS TO ENHANCE THEIR DURABILITY AND REDUCE THE POSSIBILITY OF POOR CONTACT WHICH COULD AFFECT OPERATION OR CAUSE IMPROPER ILLUMINATION OF THE OIL PRESSURE WARNING LAMP. A SMALL PILOT PORTION WAS ADDED TO THE THREADED AREA ON P.N. 25240KA051 AS SHOWN IN THE ILLUSTRATION BELOW. REVISED PRODUCTION CHANGE INFORMATION.
02-162-15
THIS SERVICE INFORMATION BULLETIN ANNOUNCES A DESIGN CHANGE TO THE OIL PRESSURE SWITCH ASSEMBLY. NICKEL PLATING HAS BEEN APPLIED TO THE INTERNAL SWITCH CONTACTS TO ENHANCE THEIR DURABILITY AND REDUCE THE POSSIBILITY OF POOR CONTACT WHICH COULD AFFECT OPERATION OR CAUSE IMPROPER ILLUMINATION OF THE OIL PRESSURE WARNING LAMP. A SMALL PILOT PORTION WAS ADDED TO THE THREADED AREA ON P.N. 25240KA051 AS SHOWN IN THE ILLUSTRATION BELOW.
18-182-15
THE PURPOSE OF THIS BULLETIN IS TO PROVIDE A DESCRIPTION OF CURRENT CHANGES TO SERVICE MANUALS AVAILABLE VIA THE SUBARU TECHNICAL INFORMATION SYSTEM (STIS) WEB SITE. THE TABLES CONTAINED WITHIN THIS BULLETIN ARE TO BE USED AS GUIDES FOR BECOMING AWARE OF THE LATEST CHANGES. WE ADVISE YOU TO ALWAYS REFER TO THE STIS WEB SITE WHEN LOOKING FOR THE LATEST SERVICE INFORMATION. PRINTED PAGES WILL NOT BE MADE AVAILABLE TO UPDATE PRINTED SERVICE MANUALS.
SST
SPECIAL SERVICE TOOL SHIPMENT: BRZ WINDOW GLASS WRENCH STARTING THE WEEK OF AUGUST 24, 2015, SUBARU RETAILERS WILL RECEIVE A SPECIAL SERVICE TOOL FOR THE BRZ. THE TOOL IS BEING SENT AS ESSENTIAL AND IS USED WHEN SERVICING THE BRZ WINDOW REGULATOR. PLEASE REFERENCE TSB 12-180-15 FOR FURTHER INFORMATION ABOUT THE USE OF THIS TOOL. RETAILER COST OF THIS TOOL IS $50.43. IT WILL BE INVOICED BY SOA ON THE PARTS STATEMENT UNDER THE SOA321105 PART NUMBER.
0116809R
Replacement Key and Immobilizer Info
171713R
Event Data Recorder (EDR) Function of Airbag Module
Announcements-2
Effective with all 2015 model year cars and forward, the oil change interval is changing to 6,000 miles or 6 months, whichever comes first.
0214013
Oil Filler Cap Gasket Coming Unseated
171713
Event Data Recorder (EDR) Function of Airbag Module
WQE41-1
Puddle Light Recall
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.