November 23, 2023 NHTSA CAMPAIGN NUMBER: 23V796000
Fuel Leak from Detached Fuel Pipe
A fuel leak in the presence of hot engine components can increase the risk of a fire.
NHTSA Campaign Number: 23V796
Manufacturer McLaren
Automotive Incorporated
Components ENGINE
Potential Number of Units Affected 269
Summary
McLaren Automotive Incorporated (McLaren) is recalling certain 2023-2024 Artura vehicles. A pipe in the low-pressure fuel pipe assembly may detach, which can result in a fuel leak.
Remedy
Dealers will replace the low-pressure fuel pipe assembly, free of charge. The manufacturer has not yet provided a schedule for recall notification. Owners may contact McLaren customer service at 855-202-8815.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Chronology of Defect Determination
The initial failure was reported by a McLaren retailer on September 16, 2023 on a vehicle that was completing a pre-delivery inspection. An engine warning light came on, with observation of fuel on the floor, and smell of fuel. After inspection it was found that a pipe within the engine low pressure fuel pipe assembly had become disconnected from an end-fitting.
McLaren immediately commenced an investigation. During the investigation eight subsequent occurrences of the low pressure fuel pipe detaching have been reported between the end of September through to mid November 2023.
Each pipe is stamped with a production date and production time. Using this information, McLaren has found that all occurrences reported to McLaren involved a single extrusion batch of pipes made by a subsupplier within a one-hour period on a single day of production (the “Relevant Production Time” on the “Relevant Production Date”).
McLaren has observed that: (i) pipes produced during the Relevant Production Time have a level of variability in their performance in burst resistance tests; and (ii) overall, the pipes produced during the Relevant Production Time performed poorly in burst resistance tests compared to pipes manufactured in other batches.
On November 16, 2023 McLaren quarantined all parts extruded on the Relevant Production Date.
Further analysis is taking place in order to determine the root cause of the defects found in the suspect batch. One point being investigated is the inconsistency of the thickness of the pipe cross-section on parts from this batch. Localised lack of thickness of the pipe can lead to lower strength against hoop and radial stresses, leading to possible loss of clamping load under pressure under engine operating conditions.
Although none of the nine instances of the low pressure fuel pipe detaching have led to a thermal event, McLaren has decided to conduct a safety recall to address it. Whilst all failures can be traced back to pipes produced during the Relevant Production Time, out of an abundance of caution the recall population includes all vehicles that may potentially be fitted with a pipe produced on the Relevant Production Date.
2 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
| MCLAREN | ARTURA | 2023-2024 |
5 Associated Documents
Defect Notice 573 Report
RCLRPT-23V796-8398.PDF 213.787KB
Chronology Report
RMISC-23V796-0272.pdf 54.327KB
Recall 573 Report – November 28, 2023
RCLRPT-23V796-5597.PDF 213.788KB
Recall Acknowledgement
RCAK-23V796-3240.pdf 690.453KB
Recall 573 Report – December 11, 2023
RCLRPT-23V796-1575.PDF 213.893KB
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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-796
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : McLaren Automotive Incorporated
Submission Date : NOV 23, 2023
NHTSA Recall No. : 23V-796
Manufacturer Recall No. : NR
Manufacturer Information :
Manufacturer Name : McLaren Automotive Incorporated
Address : 1405 S. Beltline Road, Suite 100
Coppell TX 75019
Company phone : 646-429-8916
Population :
Number of potentially involved : 362
Estimated percentage with defect : NR
Vehicle Information :
Vehicle 1 : 2023-2024 McLaren Artura
Vehicle Type : LIGHT VEHICLES
Body Style : 2-DOOR
Power Train : HYBRID ELECTRIC
Descriptive Information : The recalled population was determined by the traceability of powertrains built with pipes extruded on the Relevant Production Date (as defined in the Chronology).
Production Dates : JUL 17, 2022 – NOV 15, 2023
VIN Range 1 : Begin : NR End : NR Not sequential
Description of Defect :
Description of the Defect : A defective pipe within the low pressure fuel pipe assembly can potentially become disconnected, particularly during the engine start process.
FMVSS 1 : NR
FMVSS 2 : NR
Description of the Safety Risk : In the event the pipe becomes disconnected, there could be a fuel leak.
Because the connections are situated close to engine components which have a high operating temperature, such a leak could increase the risk of a thermal event.
Description of the Cause : A defect in the manufacture of the low pressure fuel pipe assembly may allow the pipe to detach from a connection and leak fuel. McLaren’s analysis indicates that the defect is limited to a particular batch of pipes. Please see the chronology for more information.
Identification of Any Warning
that can Occur :
In the event of a fuel leak, it may be possible to smell fuel odour in the proximity of the vehicle or observe signs of fuel leaking onto the ground.
In addition, if the low pressure fuel pipe detaches while the vehicle is running, there will be an ‘engine system fault’ warning due to engine fuel starvation,
Part 573 Safety Recall Report 23V-796 Page 2
The information contained in this report was submitted pursuant to 49 CFR §573
followed by the internal combustion engine switching off.
Involved Components :
Component Name 1 : 16FC437CP – Assy Fuel Pipe-Vehicle to GDI pumps
Component Description : 16FC437CP – Assy Fuel Pipe-Vehicle to GDI pumps
Component Part Number : 16FC437CP
Supplier Identification :
Component Manufacturer
Name : TBA
Address : NR
NR
Country : NR
Chronology :
See separate sheet
Description of Remedy :
Description of Remedy Program : McLaren will replace the low-pressure fuel pipe assembly in the affected vehicles with a new low-pressure fuel pipe assembly.
The remedy will be carried out at no charge to the customer. Since all of the affected vehicles are covered by warranty, there is no need for a reimbursement program.
How Remedy Component Differs
from Recalled Component :
The defective pipes (part number 16FC437CP) will be replaced with non-defective pipes.
McLaren is working with the pipe manufacturer to put in place controls with greater sample testing.
Part 573 Safety Recall Report 23V-796 Page 3
The information contained in this report was submitted pursuant to 49 CFR §573
Identify How/When Recall Condition
was Corrected in Production :
McLaren will assure that all future vehicles, including those in production, will contain low-fuel pipe assemblies made with appropriate pipes.
Recall Schedule :
Description of Recall Schedule : NR
Planned Dealer Notification Date : NR – NR
Planned Owner Notification Date : NR – NR
* NR – Not Reported
**************************************************************************************************************
OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-796
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : McLaren Automotive Incorporated
Submission Date : NOV 28, 2023
NHTSA Recall No. : 23V-796
Manufacturer Recall No. : NR
Manufacturer Information :
Manufacturer Name : McLaren Automotive Incorporated
Address : 1405 S. Beltline Road, Suite 100
Coppell TX 75019
Company phone : 855-202-8815
Population :
Number of potentially involved : 269
Estimated percentage with defect : NR
Vehicle Information :
Vehicle 1 : 2023-2024 McLaren Artura
Vehicle Type : LIGHT VEHICLES
Body Style : 2-DOOR
Power Train : HYBRID ELECTRIC
Descriptive Information : The recalled population was determined by the traceability of powertrains built with pipes extruded on the Relevant Production Date (as defined in the Chronology).
Production Dates : JUL 17, 2022 – NOV 15, 2023
VIN Range 1 : Begin : NR End : NR Not sequential
Description of Defect :
Description of the Defect : A defective pipe within the low pressure fuel pipe assembly can potentially become disconnected, particularly during the engine start process.
FMVSS 1 : NR
FMVSS 2 : NR
Description of the Safety Risk : In the event the pipe becomes disconnected, there could be a fuel leak.
Because the connections are situated close to engine components which have a high operating temperature, such a leak could increase the risk of a thermal event.
Description of the Cause : A defect in the manufacture of the low pressure fuel pipe assembly may allow the pipe to detach from a connection and leak fuel. McLaren’s analysis indicates that the defect is limited to a particular batch of pipes. Please see the chronology for more information.
Identification of Any Warning
that can Occur :
In the event of a fuel leak, it may be possible to smell fuel odour in the proximity of the vehicle or observe signs of fuel leaking onto the ground.
In addition, if the low pressure fuel pipe detaches while the vehicle is running, there will be an ‘engine system fault’ warning due to engine fuel starvation,
Part 573 Safety Recall Report 23V-796 Page 2
The information contained in this report was submitted pursuant to 49 CFR §573
followed by the internal combustion engine switching off.
Involved Components :
Component Name 1 : 16FC437CP – Assy Fuel Pipe-Vehicle to GDI pumps
Component Description : 16FC437CP – Assy Fuel Pipe-Vehicle to GDI pumps
Component Part Number : 16FC437CP
Supplier Identification :
Component Manufacturer
Name : TBA
Address : NR
NR
Country : NR
Chronology :
See separate sheet
Description of Remedy :
Description of Remedy Program : McLaren will replace the low-pressure fuel pipe assembly in the affected vehicles with a new low-pressure fuel pipe assembly.
The remedy will be carried out at no charge to the customer. Since all of the affected vehicles are covered by warranty, there is no need for a reimbursement program.
How Remedy Component Differs
from Recalled Component :
The defective pipes (part number 16FC437CP) will be replaced with non-defective pipes.
McLaren is working with the pipe manufacturer to put in place controls with greater sample testing.
Part 573 Safety Recall Report 23V-796 Page 3
The information contained in this report was submitted pursuant to 49 CFR §573
Identify How/When Recall Condition
was Corrected in Production :
McLaren will assure that all future vehicles, including those in production, will contain low-fuel pipe assemblies made with appropriate pipes.
Recall Schedule :
Description of Recall Schedule : NR
Planned Dealer Notification Date : NR – NR
Planned Owner Notification Date : NR – NR
* NR – Not Reported
**************************************************************************************************************
OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-796
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Submission Date :
McLaren Automotive Incorporated DEC 11, 2023 NHTSA Recall No. : 23V-796 Manufacturer Recall No. : NR Manufacturer Information :
Manufacturer Name : McLaren Automotive Incorporated Address : 1405 S. Beltline Road, Suite 100
Coppell TX 75019
Company phone : 855-202-8815 Population :
Number of potentially involved : 269 Estimated percentage with defect : 5 % Vehicle Information : Vehicle 1 : 2023-2024 McLaren Artura Vehicle Type : LIGHT VEHICLES Body Style : 2-DOOR Power Train : HYBRID ELECTRIC
Descriptive Information : The recalled population was determined by the traceability of powertrains built with pipes extruded on the Relevant Production Date (as defined in the Chronology).
Production Dates : JUL 17, 2022 – NOV 15, 2023
VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect :
Description of the Defect : A defective pipe within the low pressure fuel pipe assembly can potentially become disconnected, particularly during the engine start process.
FMVSS 1 : NR FMVSS 2 : NR
Description of the Safety Risk : In the event the pipe becomes disconnected, there could be a fuel leak.
Because the connections are situated close to engine components which have a high operating temperature, such a leak could increase the risk of a thermal event.
Description of the Cause : A defect in the manufacture of the low pressure fuel pipe assembly may allow the pipe to detach from a connection and leak fuel. McLaren’s analysis indicates that the defect is limited to a particular batch of pipes. Please see the chronology for more information. Identification of Any Warning
that can Occur : In the event of a fuel leak, it may be possible to smell fuel odour in the proximity of the vehicle or observe signs of fuel leaking onto the ground. In addition, if the low pressure fuel pipe detaches while the vehicle is running,
there will be an ‘engine system fault’ warning due to engine fuel starvation, Part 573 Safety Recall Report 23V-796 Page 2 followed by the internal combustion engine switching off. Involved Components : Component Name 1 : 16FC437CP – Assy Fuel Pipe-Vehicle to GDI pumps Component Description : 16FC437CP – Assy Fuel Pipe-Vehicle to GDI pumps Component Part Number : 16FC437CP Supplier Identification : Component Manufacturer
Name : TBA Address : NR
NR
Country : NR Chronology :
See separate sheet Description of Remedy :
Description of Remedy Program : McLaren will replace the low-pressure fuel pipe assembly in the affected
vehicles with a new low-pressure fuel pipe assembly. The remedy will be carried out at no charge to the customer. Since all of the affected vehicles are covered by warranty, there is no need for a reimbursement program. How Remedy Component Differs from Recalled Component : The defective pipes (part number 16FC437CP) will be replaced with non- defective pipes. McLaren is working with the pipe manufacturer to put in place controls with greater sample testing. The information contained in this report was submitted pursuant to 49 CFR §573 Part 573 Safety Recall Report 23V-796
Page 3
The information contained in this report was submitted pursuant to 49 CFR §573
Identify How/When Recall Condition was Corrected in Production :
McLaren will assure that all future vehicles, including those in production, will contain low-fuel pipe assemblies made with appropriate pipes. Recall Schedule :
Description of Recall Schedule : McLaren issued an interim owner letter, with a follow-up letter when
recall remedy is available.
Planned Dealer Notification Date : NOV 28, 2023 – DEC 28, 2023
Planned Owner Notification Date : DEC 01, 2023 – DEC 01, 2023
* NR – Not Reported
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