2021 Newmar MOUNTAIN AIRE: complaints, problems and recalls
Explore the records behind recurring owner reports.
Key facts
0 owner complaints analyzed
6 distinct recall campaigns
Not available median reported failure mileage
Scope: 2021 model year. Data updated: . 0 complaints include usable failure mileage. View data status.
Most common problems
No owner complaints are recorded for this selection. A complaint can name multiple components.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
No usable records for this chart.
| Category | Count |
|---|
No records.
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 0 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 0; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
No usable failure mileage is recorded. 0 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
No usable records for this chart.
| Category | Count |
|---|
No records.
Pattern summary
There is not enough complaint evidence to summarize patterns.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Examples from the source records
Examples provide context, not a representative sample or a verified diagnosis.
Recall history
6 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
20V594000 · Equipment:Mechanical:Integrated Jack/Leveler/Stabilizer
Reported: 2020-09-29 (September 29, 2020)
Newmar Corporation (Newmar) is recalling certain 2021 Essex, Dutch Star, Mountain Aire, and London Aire motorhomes. The front leveling jacks may not be fastened correctly to the chassis, possibly causing the jacks to fail to support the weight of the motorhome.
Consequence: If the front jacks fail, an unexpected drop can occur, increasing the risk of an injury.
Remedy: Newmar will notify owners, and dealers will inspect and repair the leveling jacks as necessary, free of charge. The recall began November 9, 2020. Owners may contact Newmar customer service at 1-800-731-8300.
NHTSA campaign record ↗21V088000 · Steering:Critical Fasteners | Suspension:Front
Reported: 2021-02-18 (February 18, 2021)
Newmar Corporation (Newmar) is recalling certain 2020-2022 Dutch Star, King Aire, Essex, London Aire, and Mountain Aire motorhomes. The steering gear mounting bolts may become loose and back out, resulting in difficulty steering.
Consequence: Difficulty steering, or the inability to steer in both directions, can increase the risk of a crash.
Remedy: On behalf of Newmar, Shyft Group Inc. will coordinate the recall repair and notify owners, and dealers will replace the steering gear mounting bolts and washers, free of charge. The recall is expected to began April 19, 2021. Owners may contact Newmar customer service at 1-800-731-8300. Newmar's number for this recall is 21V 041.
NHTSA campaign record ↗21V258000 · Steering:Column
Reported: 2021-04-13 (April 13, 2021)
Newmar Corporation (Newmar) is recalling certain 2021 London Aire, Dutch Star, New Aire, Ventana, and Mountain Aire vehicles. The steering output shaft may be too short and could disengage from the steering input shaft.
Consequence: Disengagement of the steering output shaft may result in a loss of steering, increasing the risk of a crash.
Remedy: Newmar will notify owners, and dealers will inspect and, if necessary, replace the steering column, free of charge. The recall began on May 19, 2021. Owners may contact Newmar customer service at 1-800-731-8300 and Shyft Group customer service at 1-800-582-3454. Newmar's number for this recall is 21V-214.
NHTSA campaign record ↗21V571000 · Equipment:Recreational Vehicle/Trailer | Structure
Reported: 2021-07-27 (July 27, 2021)
Newmar Corporation (Newmar) is recalling certain 2019-2021 Bay Star, Ventana, New Aire, 2019-2020 Canyon Star, Bay Star Sport, Essex, King Aire, London Aire, Mountain Aire, 2018-2021 Dutch Star, 2020 Kountry Star, and 2019 Ventana LE recreational vehicles. The adhesive that bonds the vented portion of the window may fail.
Consequence: Adhesive failure may cause the vent portion of the window to detach, increasing the risk of a crash or injury.
Remedy: Dealers will inspect the windows, and replace the vent if necessary, free of charge. Owner notification letters were mailed on September 10, 2021. Owners may contact Newmar customer service at 1-800-731-8300. Newmar's number for this recall is 21E 047.
NHTSA campaign record ↗21V700000 · Electrical System: Instrument Cluster/Panel
Reported: 2021-09-09 (September 9, 2021)
Newmar Corporation (Newmar) is recalling certain 2019-2021 London Aire, Dutch Star, Essex, King Aire, Mountain Aire, 2020-2021 Ventana, and 2021 New Aire recreational vehicles. The instrument cluster may intermittently go blank while the vehicle is in motion.
Consequence: A blank instrument cluster display may be missing critical information such as the vehicle's speed and warning lights, which can increase the risk of a crash.
Remedy: Dealers will update the control module software, and reroute and secure the ductwork, free of charge. Owner notification letters were mailed on November 8, 2021. Owners may contact Newmar's customer service at 1-800-731-8300.
NHTSA campaign record ↗22V166000 · Steering:Critical Fasteners
Reported: 2022-03-17 (March 17, 2022)
Newmar Corporation (Newmar) is recalling certain 2021-2022 New Aire, Essex, King Aire, Ventana, Kountry Star, London Aire, Dutch Star and Mountain Aire motorhomes. The upper bolt connecting the steering column may not have been properly tightened, causing the nut to loosen off the bolt, potentially resulting in loss of steering control.
Consequence: Loss of steering control increases the risk of a crash.
Remedy: Dealers will inspect and tighten the upper and lower bolts as necessary, free of charge. Owner notification letters were mailed on May 16, 2022. Owners may contact Newmar's customer service at 1-800-731-8300.
NHTSA campaign record ↗Vehicle analysis explorer
Inspect model-year patterns, reported mileage, monthly activity and the evidence behind each signal.
Data completeness
0 unique complaints in this selection. Analysis snapshot: 2026-09-30.
Missing, zero and invalid mileage is excluded. Dates after the snapshot are excluded. Examples are limited selections, not a representative sample.
Problems by model year
Model-wide comparison of the eight most reported components across the model. Cells show counts and shares within each model year. Open a cell for source examples.
| Component | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Service Brakes, Hydraulic | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Engine | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 1100.0%ODI 11384396 · 25,000 miI PURCHASED THE UNIT WITH 25,000 MILES. THE DEF SYSTEM FAILED ENROUTE TO THE DEALER I PURCHASED IT FROM AND FAILED AGAIN AFTER APPROXIMATELY 3,000 MILES AFTER REPAIR. THE ENTIRE DEF HEADER WAS REPLACED. THIS IS AN EXTREMELY DANGEROUS SITUATION WHEN THE VEHICLE GOES IN TO DERATE. MY MOTORHOME IS 53,000 LBS AND 45'. ADD A TOW VEHICLE AND IT IS VERY DANGEROUS WHEN THIS HAPPENS. I WAS HEADING TO LAS VEGAS NV FROM QUARTZITE, AZ WHEN THIS HAPPEND ON A TWO LANE HIGHWAY. NO PLACE TO PULL OVER TO EVEN CHECK ANYTHING. THESE DEF SYSTEMS CONTINUE T… | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 1100.0%ODI 11423856These 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 creates a very dangerous situation for anyone driving a motorhome that experiences this problem. In extreme cases, it may stop the vehicle in traffic lanes. Spartan Chassis says replacement DEF control heads are in extremely short supply and they wi… | 125.0%ODI 11425599My motorhome is currently in a Freighliner shop to replace the 2nd defective DEF head in less than 19,000 miles since New. The defective DEF head causes a derate of power and total shut down and can leave you stranded on the highway or coming down a mountain pass with no power defeating the air compressor therefore no air brakes with a 45 foot, 58,000 GVW vehicle. In my case I was able to get off the highway before total shutdown only because I was aware of the built in shutdown design of the emissions system. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Equipment:Recreational Vehicle/Trailer | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Unknown Or Other | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 125.0%ODI 11383084 · 3,000 miTHE INSTRUMENT PANEL BRIGHTNESS CANNOT BE ADJUSTED, CAUSING GLARE WHEN DRIVING AT NIGHT IRRESPECTIVE OF WHETHER IT IS IN-MOTION OR STATIONARY. AS SUCH, THESE VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NUMBER 101, "CONTROL AND DISPLAYS." THE ONLY WAY I CAN DRIVE AT NIGHT IS TO COVER THE GLASS DISPLAY SO THAT I DO NOT GET THE GLARE REFLECTING FROM THE SIDE WINDOWS AND WINDSHIELD. WHEN THE GLASS DASH IS COVERED YOU LOSE CRITICAL INFORMATION INCLUDING VEHICLE SPEED. THE GLARE OBSCURES SEEING OUT THE WI… | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 150.0%ODI 11511401What component or system failed or malfunctioned, and is it available for inspection upon request? Tire pressurre monitoring system (TPMS) has not functioned properly since the day the vehicle was delivered. Drive and tag axle tire pressures and temps won't display reliably. The inner tire pressure on the driver's side of the drive axle has never displayed. Other drive and tag axle tire info displays intermittently in no obvious pattern-appears and disappears unpredictably. The TPMS can be inspected. How was your safety or the safety of… | 0UnavailableNo examples available for this selection. |
| Service Brakes | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 125.0%ODI 11339919 · 10,000 miON JUNE 4TH AT 11:16 AM, TRAVELING WEST BOUND ON I-40 AT 70 MPH MY BRAKES WERE SLAMMED ON MOMENTARILY AND ABILITY TO ACCELERATE WAS CANCELLED FOR A FEW SECONDS. THERE WAS NOTHING IN FRONT OF ME EXCEPT FOR THE OVER PASS FOR PETRIFIED FOREST NP. BIG RIG TRUCKER WAS JUST BEGINNING TO CHANGE LANES AND PASS ME WHEN THIS HAPPENED. TRUCKER WAS CHALLENGED IN HIS EFFORTS TO AVOID REAR ENDING ME AND HE WAS OBVIOUSLY FURIOUS WITH ME AS HE PASSED ME. THIS WAS THE 5TH TIME THE COACH HAS FALSE ALARMED IN ABOUT 7,000 MILES. ZF WABCO, ON GUARD CMS IS THE R… | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Structure:Frame And Members | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Visibility:Windshield | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. |
| Equipment | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. | 0UnavailableNo examples available for this selection. | 00.0%No examples available for this selection. | 0UnavailableNo examples available for this selection. |
Darker cells indicate a larger share of submitted complaints. Components overlap. This measures complaint composition, not failure probability.
Failure mileage by component
Median and middle 50% of usable owner-reported mileages. Ranges require at least five records.
| Component | Mileage range (25th–75th percentile) | Median | Usable records | Examples |
|---|---|---|---|---|
| No usable records for this analysis. | ||||
Complaint and recall timeline
Explore monthly filing activity alongside recall announcements. Up to ten years of monthly history is available.
Solid line: filed complaints. Dashed amber lines: recall announcement dates for this vehicle selection; markers include all recall components. The latest month is partial. Temporal proximity does not establish causation.
Monthly counts, recall campaigns and complaint examples
| Month | Complaints | Campaigns announced | Examples |
|---|---|---|---|
| 2024-10 | 0 | None | No examples available for this selection. |
| 2024-11 | 0 | None | No examples available for this selection. |
| 2024-12 | 0 | None | No examples available for this selection. |
| 2025-01 | 0 | None | No examples available for this selection. |
| 2025-02 | 0 | None | No examples available for this selection. |
| 2025-03 | 0 | None | No examples available for this selection. |
| 2025-04 | 0 | None | No examples available for this selection. |
| 2025-05 | 0 | None | No examples available for this selection. |
| 2025-06 | 0 | None | No examples available for this selection. |
| 2025-07 | 0 | None | No examples available for this selection. |
| 2025-08 | 0 | None | No examples available for this selection. |
| 2025-09 | 0 | None | No examples available for this selection. |
| 2025-10 | 0 | None | No examples available for this selection. |
| 2025-11 | 0 | None | No examples available for this selection. |
| 2025-12 | 0 | None | No examples available for this selection. |
| 2026-01 | 0 | None | No examples available for this selection. |
| 2026-02 | 0 | None | No examples available for this selection. |
| 2026-03 | 0 | None | No examples available for this selection. |
| 2026-04 | 0 | None | No examples available for this selection. |
| 2026-05 | 0 | None | No examples available for this selection. |
| 2026-06 | 0 | None | No examples available for this selection. |
| 2026-07 | 0 | None | No examples available for this selection. |
| 2026-08 | 0 | None | No examples available for this selection. |
| 2026-09 (partial) | 0 | None | No examples available for this selection. |
Emerging complaint spikes
Complete months in the latest six months with at least 10 complaints, at least twice the preceding 12-month average, and at least three square-root deviations above that average.
This is a descriptive screening rule, not a statistical defect finding. Publicity and reporting changes can increase submissions.
No complete months meet the spike thresholds for this selection.
Equal-age model-year comparison
Model-wide cumulative reports during the first three or five calendar years, starting with the model year (age 0). Only fully elapsed windows are compared.
2022: 2 complaints · 2023: 0 complaints
| Model year | Through age 0 | Through age 1 | Through age 2 |
|---|---|---|---|
| 2022 | 0 | 1 | 2 |
| 2023 | 0 | 0 | 0 |
Date coverage across each selected cohort
| Year | Incident dates used | Filing date fallbacks | Excluded dates |
|---|---|---|---|
| 2022 | 2 | 0 | 0 |
| 2023 | 0 | 0 | 0 |
Incident date is preferred when valid and no later than filing; otherwise filing date is used. Model year approximates age. Equal observation time does not adjust for sales, distance driven or reporting delays. One complaint linked to multiple model years can appear in each cohort.
Components reported together
Each cell counts unique complaints naming both components. Open a nonzero cell for examples.
| Component |
|---|
| No usable records for this analysis. |
Co-reporting does not establish that one component caused another concern.
Recurring narrative patterns
Specific keyword mentions beyond broad component labels. Matching includes negations and comparisons and does not confirm a diagnosis.
0 patterns with matching reports.
No narratives match the published patterns.