NHTSA vehicle safety data
2018 Newmar Mountain Aire Recalls & Complaints
The 2018 Newmar Mountain Aire has 16 NHTSA recall campaigns and 1 owner complaint on file as of November 3, 2026. Recall repairs are usually free at an authorized Newmar dealer.
NHTSA recall and complaint data for the 2018 Newmar Mountain Aire. Recall data is refreshed daily from NHTSA.
2018 Newmar Mountain Aire owner complaints
Owners have filed 1 complaint with NHTSA about the 2018 Newmar Mountain Aire, describing incidents dated July 7, 2021.
Most-cited components
- Engine 1 complaint
Newest complaints
ODI #11423856 · Filed
These vehicles, built on a Spartan K3 chassis and powered by a Cummins ISX-12 engine are experiencing very high failure rates in the DEF system control head. When the control head fails, it sends error codes that result in derating engine power dramatically and/or immediate engine shut-down. This…
High Pressure Fuel Rail Assembly May Leak Fuel
NHTSA #21V506000 · Fuel System, Diesel — Fuel Injection System — Fuel Rail · NHTSA notice
Reported July 2, 2021 · Newmar Corporation
Potentially affected: 1,737 vehicles
Repair completion: 2.19% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Newmar campaign Cummins 21E-032 · Owners notified August 24, 2021
Defect description
Newmar Corporation (Newmar) is recalling certain 2019 Mountain Aire, 2020-2021 New Aire, 2020-2022 Super Star, 2018-2021 Ventana, and Dutch Star vehicles equipped with certain Cummins diesel engines. The sealing washer may not seat correctly in the pilot boreholes, allowing the high-pressure fuel rail assembly to leak.
Safety consequence
A fuel leak in the presence of an ignition source increases the risk of a fire.
Manufacturer remedy
Cummins service centers will inspect the rail threads and fuel lines, and replace the rail as necessary, free of charge. Owner notification letters were mailed on August 24, 2021. Owners may contact Newmar customer service at 1-800-731-8300. Newmar's number for this recall is Cummins 21E-32.
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.
High Pressure Fuel Rail Assembly May Leak Fuel
NHTSA #21V372000 · Fuel System, Diesel — Fuel Injection System — Fuel Rail · NHTSA notice
Reported May 20, 2021 · Newmar Corporation
Potentially affected: 1,294 vehicles
Repair completion: 71.41% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Newmar campaign Cummins 21E-032 · Owners notified August 30, 2021
Defect description
Newmar Corporation (Newmar) is recalling certain 2017-2022 Dutch Star, 2017-2019 Mountain Aire, 2019-2021 Ventana and 2021 New Aire motorhomes. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.
Safety consequence
A fuel leak in the presence of an ignition source increases the risk of a fire.
Manufacturer remedy
Dealers will inspect the rail threads, and replace the rail as necessary, free of charge. Interim notification letters were mailed to owners on July 16, 2021. Owners may contact Newmar customer service at 1-800-731-8000. Newmar's number for this recall is Cummins 21E-032.
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.safercar.gov.
Damaged Circuit Board May Affect Lighting Function
NHTSA #20V421000 · Exterior Lighting — Brake Lights · NHTSA notice
Reported July 21, 2020 · Newmar Corporation
Potentially affected: 3,202 vehicles
Repair completion: 34.6% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Newmar campaign 20V-404 · Owners notified September 11, 2020
Defect description
Newmar Corporaton (Newmar) is recalling certain 2016-2019 Ventana LE, 2017-2020 Ventana, London Aire, Essex and Dutch Star, 2017-2019 Mountain Aire, 2018-2020 New Aire, and 2020 Kountry Star motorhomes that received the 'inspection-only' remedy from recall 19V-426. The rear mounted Power Distribution Module (PDM) may have been damaged during manufacturing, possibly resulting in the rear marker lights, brake lights, or turn signals not functioning.
Safety consequence
Non-functioning exterior marker lights can increase the risk of a crash.
Manufacturer remedy
Newmar will notify owners, and Daimler Trucks North America dealers will replace the PDM, free of charge. This recall began September 11, 2020. Owners may contact Newmar's customer service at 1-800-731-8300. Newmar's number for this recall is 20V-404.
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.safercar.gov.
Bedroom Fascia Header May Unexpectedly Fall
NHTSA #19V610000 · Equipment — Recreational Vehicle/Trailer · NHTSA notice
Reported August 20, 2019 · Newmar Corporation
Potentially affected: 376 vehicles
Repair completion: 66.22% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Owners notified September 17, 2019 · Vehicles built December 12, 2016 – April 4, 2019 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2018-2020 Mountain Aire, Essex, and King Aire motorhomes. The bedroom fascia header may fall unexpectedly onto the bed.
Safety consequence
If the fascia header falls while there is an occupant in the bed, it can increase the risk of an injury.
Manufacturer remedy
Newmar will notify owners, and dealers will add screws and brackets to properly secure the fascia header, free of charge. The recall began September 17, 2019. Owners may contact Newmar customer service at 1-800-731-8300.
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.safercar.gov.
Circuit Board Damage Affecting Lighting Functions
NHTSA #19V426000 · Exterior Lighting · NHTSA notice
Reported June 7, 2019 · Newmar Corporation
Potentially affected: 2,003 vehicles
Repair completion: 79.93% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Newmar campaign 18V-852 · Owners notified July 18, 2019 · Vehicles built January 26, 2016 – May 24, 2019 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2016-2019 Ventana LE and 2017-2019 Dutch Star, Essex, London Aire, Mountain Aire and Ventana, and 2018-2019 New Aire motorhomes built on a Daimler trucks chassis. The rear mounted Power Distribution Module (PDM) may have been damaged during manufacturing, possibly resulting in the rear marker lights, brake lights, or turn signals not functioning.
Safety consequence
Nonfunctioning lights can increase the risk of a crash.
Manufacturer remedy
Newmar will notify owners, and Daimler Trucks dealers will inspect and replace the rear PDM, as necessary, free of charge. The recall began July 18, 2019. Owners may contact Newmar customer service at 1-800-731-8300. Newmar's number for this recall is 18V-852.
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.safercar.gov.
WiFiRanger Power Supply May Overheat
NHTSA #19V257000 · Equipment — Electrical · NHTSA notice
Reported March 29, 2019 · Newmar Corporation
Potentially affected: 476 vehicles
Repair completion: 64.92% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Owners notified April 18, 2019 · Vehicles built July 28, 2017 – January 30, 2018 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2018-2019 Bay Star, Essex, New Aire, 2018 Bay Start Sport, Canyon Star, Dutch Star, King Aire, Mountain Aire, Ventana LE, Ventana, and London Aire motorhomes. The power supply for the WiFiRanger may overheat.
Safety consequence
An overheated power supply can increase the risk of a fire.
Manufacturer remedy
Newmar has notified owners, and dealers will replace the power supply, free of charge. The recall began April 18, 2019. Owners may contact Newmar customer service at 1-800-731-8300.
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.safercar.gov.
Insufficiently Tightened Brake Caliper Bolts
NHTSA #18V859000 · Service Brakes, Air — Disc — Caliper · NHTSA notice
Reported December 4, 2018 · Newmar Corporation
Potentially affected: 308 vehicles
Newmar campaign 18V-703 · Owners notified January 10, 2019 · Vehicles built November 10, 2017 – October 31, 2018 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2018-2019 Newmar Essex, Ventana LE, Ventana, London Aire, and Mountain Aire vehicles. The brake caliper mounting bolts may not have been sufficiently tightened.
Safety consequence
Loose brake caliper mounting bolts can reduce brake effectiveness, increasing the risk of a crash.
Manufacturer remedy
Newmar has notified owners, and Daimler Trucks North America dealers will inspect and tighten the brake caliper mounting bolts, free of charge. The recall began January 10, 2019. Owners may contact Newmar customer service at 1-800-731-8300. Newmar's number for this recall is 18V-703.
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.safercar.gov.
Entry Door may Open Unexpectedly
NHTSA #18V518000 · Equipment — Recreational Vehicle/Trailer · NHTSA notice
Reported August 6, 2018 · Newmar Corporation
Potentially affected: 239 vehicles
Repair completion: 100% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Owners notified September 5, 2018 · Vehicles built January 10, 2018 – April 6, 2018 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2018-2019 Newmar Ventana LE, Mountain Aire, Essex, Ventana, Dutch Star, New Aire, London Aire and King Aire motorhomes. The affected vehicles have entry doors that have latch rods that may be improperly adjusted, allowing the door to open during transit.
Safety consequence
If the door opens during transit, it can increase the risk of injury or a crash.
Manufacturer remedy
Newmar will notify owners, and dealers will readjust the door latch rod, free of charge. The recall began September 5, 2018. Owners may contact Newmar customer service at 1-800-731-8300.
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.safercar.gov.
Caliper Mounting Bolts Insufficiently Tightened
NHTSA #18V505000 · Service Brakes, Hydraulic — Foundation Components — Disc — Caliper · NHTSA notice
Reported August 2, 2018 · Newmar Corporation
Potentially affected: 119 vehicles
Repair completion: 94.96% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Newmar campaign 18V-353 · Owners notified August 30, 2018 · Vehicles built March 10, 2017 – January 31, 2018 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2017-2019 Newmar Ventana LE and Ventana motorhomes, 2018 Mountain Aire and Essex motorhomes, and 2017-2018 London Aire motorhomes. The brake caliper mounting bolts on these vehicles may be insufficiently tightened, allowing the bolts to loosen.
Safety consequence
If the brake caliper mounting bolts loosen, braking performance may be reduced, increasing the risk of a crash.
Manufacturer remedy
Newmar will notify owners, and authorized Daimler Trucks service centers will inspect the caliper mounting bolts and tighten them to the proper specification, free of charge. The recall began on August 30, 2018. Owners may contact Newmar customer service at 1-800-731-8300. Newmar's number for this recall is 18V-353.
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.safercar.gov.
Slide-Out Room may Move Unexpectedly
NHTSA #18V438000 · Equipment — Recreational Vehicle/Trailer · NHTSA notice
Reported June 28, 2018 · Newmar Corporation
Potentially affected: 930 vehicles
Repair completion: 71.72% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Owners notified August 24, 2018 · Vehicles built January 8, 2018 – June 1, 2018 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2018 Newmar Bay Star, King Aire, London Aire, Mountain Aire, Bay Star Sport, Canyon Star, Dutch Star, Essex, New Aire, Ventana LE, and Ventana motorhomes. When the ignition key is in the off/accessory position and the battery disconnect is on, the slide-out rooms on these vehicles may move in or out unexpectedly.
Safety consequence
If the slide-out room moves unexpectedly, it can increase the risk of injury.
Manufacturer remedy
Newmar will notify owners, and dealers will replace the slide-out room controller, free of charge. The recall began August 24, 2018. Owners may contact Newmar customer service at 1-800-731-8300.
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.safercar.gov.
Wipers may not fully Contact Windshield/FMVSS 104
NHTSA #18V387000 · Visibility — Windshield Wiper/Washer · NHTSA notice
Reported June 8, 2018 · Newmar Corporation
Potentially affected: 77 vehicles
Repair completion: 98.7% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Owners notified August 3, 2018 · Vehicles built January 29, 2018 – May 31, 2018 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2018-2019 Newmar Mountain Aire, London Aire, Essex, and King Aire motorhomes. These vehicles are equipped with windshield wipers that may have an incorrect bend, possibly preventing the wiper arms from properly contacting the windshield. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 104, "Windshield Wiping and Washing Systems."
Safety consequence
If the windshield wipers do not properly contact the windshield, the driver's visibility may be reduced, increasing the risk of a crash.
Manufacturer remedy
Newmar will notify owners, and dealers will replace the wiper arms, free of charge. The recall began on August 3, 2018. Owners may contact Newmar customer service at 1-800-731-8300.
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.safercar.gov.
Diesel Exhaust Fluid Tank Bracket Contacting Tire
NHTSA #18V307000 · Tires · NHTSA notice
Reported May 11, 2018 · Newmar Corporation
Potentially affected: 96 vehicles
Owners notified June 21, 2018 · Vehicles built March 17, 2015 – April 5, 2018 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2016-2018 Newmar Mountain Aire motorhomes. The Diesel Exhaust Fluid (DEF) tank bracket may contact the tag axle tire, possibly causing tire damage.
Safety consequence
If the bracket damages the tire, it can cause tire failure, increasing the risk of a crash.
Manufacturer remedy
Newmar will notify owners, and Spartan Motors dealers will move the DEF bracket away from the tire, free of charge. The recall began on June 21, 2018. Owners may contact Newmar customer service at 1-800-731-8300.
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.safercar.gov.
Loose Electrical Connections may cause Fire
NHTSA #18V236000 · Electrical System — Wiring — Fuses and Circuit Breakers · NHTSA notice
Reported April 13, 2018 · Newmar Corporation
Potentially affected: 653 vehicles
Repair completion: 83.61% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Owners notified May 17, 2018 · Vehicles built June 2, 2017 – October 12, 2017 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2018 Newmar Bay Star, Bay Star Sport, Canyon Star, Ventana LE, Ventana, Dutch Star, New Aire, Mountain Aire, London Aire, Essex, and King Aire motorhomes. The electrical connections in the breaker box may not be properly tightened, possibly causing the connections to overheat.
Safety consequence
Overheating of the electrical connections can increase the risk of a fire.
Manufacturer remedy
Newmar will notify owners, and dealers will tighten the loose electrical connections, as necessary, free of charge. The recall began on May 17, 2018. Owners may contact Newmar customer service at 1-800-731-8300.
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.safercar.gov.
Loose Electrical Connection at Transfer Switch
NHTSA #17V830000 · Electrical System — Wiring · NHTSA notice
Reported December 19, 2017 · Newmar Corporation
Potentially affected: 2,915 vehicles
Repair completion: 79.83% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Owners notified February 5, 2018 · Vehicles built February 22, 2016 – October 9, 2017 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain model year 2016-2018 Bay Star, Bay Star Sport, Canyon Star, Dutch Star, Essex, King Aire, London Aire, Mountain Aire, New Aire, Ventana and Ventana LE motorhomes. These vehicles may have a loose power connection at the Automatic Transfer Switch (ATS), possibly resulting in a build up of heat.
Safety consequence
The build up of heat in the wiring from the loose power connection can increase the risk of a fire.
Manufacturer remedy
Newmar will notify owners, and dealers will inspect the electrical connection at the ATS, tightening it as necessary, free of charge. The recall began on February 5, 2018. Owners may contact Newmar customer service at 1-800-731-8300.
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.safercar.gov.
Fire Extinguisher May Be Clogged or Inoperable
NHTSA #17V809000 · Equipment · NHTSA notice
Reported December 15, 2017 · Newmar Corporation
Potentially affected: 34,699 vehicles
Repair completion: 6.32% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Newmar campaign 17E-062 · Owners notified February 7, 2018 · Vehicles built July 24, 1997 – November 3, 2017 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling various 1995-2018 motorhomes. A list of the affected vehicles available at: https://static.nhtsa.gov/odi/rcl/2017/RMISC-17V809-2309.pdf. These motorhomes are equipped with Kidde Plastic-Handle or Push Button 'Pindicator' Fire Extinguishers that may become clogged, preventing the extinguisher from discharging as expected or excessive force may be needed to activate the extinguisher. Additionally, in certain models, the nozzle may detach from the valve assembly with enough force that it could cause injury and also render the product inoperable. For a full list of the affected fire extinguisher models visit: https://static.nhtsa.gov/odi/rcl/2017/RMISC-17E062-5427.pdf
Safety consequence
In the event of a fire, if the fire extinguisher does not function properly, it can increase the risk of injury.
Manufacturer remedy
Newmar will notify owners, and instruct them to contact Kidde for a replacement fire extinguisher, free of charge. The recall began on February 7, 2018. Owners may contact Kidde customer service toll-free at 1-855-262-3540, or online at www.kidde.com and click on "Product Safety Recall" for more information or owners may contact Newmar customer service at 1-574-773-7791. Newmar's number for this recall is 17E-062.
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.safercar.gov.
Loose Ball Joints may cause Loss of Steering
NHTSA #17V195000 · Suspension — Front — Control Arm · NHTSA notice
Reported March 22, 2017 · Newmar Corporation
Potentially affected: 595 vehicles
Newmar campaign 17004 · Owners notified May 3, 2017 · Vehicles built April 29, 2011 – March 13, 2017 (per NHTSA)
Defect description
Newmar Corporation (Newmar) is recalling certain 2017-2018 Dutch Star, 2016-2018 Mountain Aire and London Aire, and 2012-2018 Essex and King Aire motorhomes built on a Spartan Motors chassis. The ball joints on the independent front suspension (IFS) modules can loosen and separate, leading to a partial loss of steering.
Safety consequence
A separated ball joint can cause a loss of steering control, increasing the risk of a crash.
Manufacturer remedy
Newmar will notify owners, and Spartan service centers will remove, clean, apply thread locker, reinstall and torqued the ball joints, as necessary, free of charge. The recall began on May 3, 2017. Owners may contact Spartan at 1-800-543-4277 to locate a qualified service center or contact Newmar customer service at 1-574-773-7791. Newmar's number for this recall is 17004.
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.safercar.gov.
Other Newmar Mountain Aire model years
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