2021 ACURA RDX

Recalls, Specs & Safety Report

2RecallsNHTSA Verified91ComplaintsNHTSA Data0InvestigationsNHTSA Data
Expert Verdict
⚠️Elevated Concerns

The 2021 Acura RDX shows concerning reliability based on two recalls, particularly involving the driveshaft and airbag systems. Given that issues often arise within the first 20,000 miles, current owners should stay vigilant about these potential problems.

Key Factor:Airbag and driveline issues

📋Why This Matters

The safety of drivers and passengers is paramount, making the airbag sensor recall particularly critical. If the front passenger seat weight sensor fails, it could prevent the airbag from deploying in a crash, significantly increasing risk. Additionally, a compromised driveshaft can lead to unexpected vehicle failures while driving, potentially leaving drivers stranded or causing accidents.

Focus Area:Safety Profile
📊

Expert Analysis

  • 📈
    Recall Trend:No Change in recalls
  • ⚠️
    Primary Risk Area:Warning
  • ⚖️
    Vs Brand: Worse than avg (1.2)
    📝
    Summary: This model's year-over-year safety trend reflects a mix of engineering prowess and notable issues. While Acura is generally known for its reliability, these recalls highlight specific vulnerabilities that are not typical for the brand.
Critical Component: Warning

Safety & Reliability Score

79/100
Good

Score Breakdown

Recall Impact-16
Complaint Impact-4.55
Investigation Impact-0

Technical Specifications

Key specifications for the 2021 ACURA RDX

Model Year2021
MakeACURA
ModelRDX
Fuel TypeGasoline
Body ClassPassenger Vehicle

Safety History Timeline

Dec20
ISSUEFirst Report
Jan21
NEWProduction
Feb21
RECALLRecall Issued
Jan24
RECALLRecall Issued

Consumer Complaint Analysis

⚠️

Most Reported Issue

19 complaints (21% of total)
➡️

Complaint Trend

Stable
No trend data
✅

Safety Incidents

No critical incidents

Complaint Severity Distribution

Breakdown of 91 consumer complaints by severity level.

🟠High
7(8%)
🟡Medium
21(23%)
🟢Low
63(69%)

Mileage Failure Analysis

⚙️Engineering Insight

The peak failure range of 0-20k miles indicates that most problems are cropping up early in ownership. Owners should be proactive within this mileage window to address any unusual noises or performance issues before they escalate.

📊 Mileage data extracted from 15 of 91 complaints (16% coverage)
0-20k
9 reports (60%)
20k-40k
1 reports (7%)
40k-60k
1 reports (7%)
60k-80k
3 reports (20%)
80k-100k
0 reports (0%)
100k+
1 reports (7%)
* Analysis based on mileage data extracted from consumer complaint descriptions. Actual failure rates may vary.

🛠️ DIY Diagnosis Center

Experiencing an issue? Select a symptom to find official manufacturer solutions (TSBs).

Primary Risk Areas

POWER TRAINAIR BAGS

🎯Risk Areas & Recommended Actions

Based on recall data, these components require verification:

1

Driveshaft

Issue: Improper heat treatment may cause driveshaft failure.

✅

Have the driveshaft inspected immediately by a qualified technician if you experience noise or vibration.

🔍

Ask for a detailed service history related to previous inspections or replacements on the driveshaft.

Campaigns:21V-169
2

Airbag Sensor

Issue: Weight sensor may crack and fail to deploy airbag correctly.

✅

Check with your dealer about the status of this recall and ensure necessary repairs are completed.

🔍

'Verify if this vehicle has undergone necessary repairs related to airbag recalls before purchase.'

Campaigns:21V-170
💡Visit NHTSA.gov or contact your ACURA dealer to verify recall completion status.

Official Safety Recalls (2)

Campaign: 21V939000

POWER TRAIN:DRIVELINE:DRIVESHAFT

Summary

Honda (American Honda Motor Co.) is recalling certain 2021 Acura RDX and 2022 CR-V Hybrid vehicles. A component in the right or left front driveshaft may have been improperly heat-treated, which could result in driveshaft failure.

Consequence

Driveshaft failure can cause a sudden loss of drive power, or cause the vehicle to roll away when parked if the parking brake is not applied. Either condition can increase the risk of a crash or injury.

Remedy

Dealers will replace the right or left front driveshaft as necessary, free of charge. Owner notification letters were mailed January 24, 2022. Owners may contact Honda customer service 1-888-234-2138. Honda's numbers for this recall are BBY, NBW, and OBX.

Additional 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.

Manufacturer: Honda (American Honda Motor Co.)

Campaign: 24V064000

AIR BAGS:SENSOR:OCCUPANT CLASSIFICATION:FRONT PASSENGER

Summary

Honda (American Honda Motor Co.) is recalling certain 2020-2022 Pilot, Accord, Civic sedan, HR-V, Odyssey, 2020 Civic coupe, Fit, 2021-2022 Civic hatchback, 2021 Civic Type R, Insight, 2020-2021 CR-V, CR-V Hybrid, Passport, Ridgeline, Accord Hybrid, 2020 Acura MDX, 2022 Acura MDX, 2020-2022 Acura RDX, and 2020-2021 Acura TLX vehicles. The front passenger seat weight sensor may crack and short circuit, failing to suppress the air bag as intended.

Consequence

An air bag that deploys unintentionally during a crash can increase the risk of injury.

Remedy

Dealers will replace the seat weight sensors, free of charge. Owner notification letters were mailed March 28, 2024, October 18, 2024, and August 2025. This is a phased recall. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for these recalls are XHP and VHQ.

Additional 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.

Manufacturer: Honda (American Honda Motor Co.)

NHTSA Investigations

0 investigations
✓

No active investigations for this vehicle.

Consumer Complaints

91 total complaints

Consumer-reported issues submitted to NHTSA for 2021 RDX.

Common Reported SymptomsAI Analysis

Warning21%
Shatter19%
Acceleration Issues16%
Noise11%
Accident11%
Check Engine Light9%
Explode8%
Brakes🔶 Medium
SERVICE BRAKES

After dealer (worldwide motors Ltd also call (Paragon Acura) 33-40 57th street, Woodside, NY 11377)replaced front and rear brake pads and rotors, my vehicle experienced unintended acceleration while stopped. While idling at a red light with my foot firmly on the brake pedal, the vehicle suddenly moved forward approximately 10 feet on its own. This was a serious safety concern and nearly caused a collision or pedestrian injury. I immediately returned the vehicle to the dealer. The dealer stated they could not duplicate the issue and said the vehicle was operating normally. No warning lights were present. The incident occurred immediately after brake service. I am concerned this may involve the braking system, brake booster, brake switch, or electronic throttle interaction. This behavior is not normal and poses a safety risk.

Dec 18, 2025Open
Other⚠️ High
UNKNOWN OR OTHER

Back windshield glass exploded with no impact. Car was not moving. There is shattered glass everywhere and the car cannot be driven until it is repaired. This appears to be a well known issue but there is no official recall at this time. My Acura dealer said this was covered in warranty that expired in November. The incident happened December 13, 2025.

Dec 13, 2025Open
Other🔶 Medium
UNKNOWN OR OTHER

Back windshield shattered and blew out with zero impact. Car was parked Manufacturer denies responsibility . Independent company repaired because dealer was booked and needed fixed quickly. No one injured glass all over back of car and trapped in base of doo now because of faulty design. No warnings at all.

Dec 11, 2025Open
Body/Interior🔵 Low
STRUCTURE,UNKNOWN OR OTHER

1:Sunroof frame shifts creating a popping noise during certain driving conditions. Turning and going up a drive way. 2:Distracting for the driver and passengers stay concerned the whole time. 3:There is a service bulletin with Acura 23-004 but no recall to the matter. 4: Unknown 5:No warning lamps

Dec 9, 2025Open
Other🔵 Low
UNKNOWN OR OTHER

I had found a leak coming from my 2021 Acura RDX early November. I took it into the dealership December 1st to get it diagnosed and they stated that the transmission and transfer case needs to get replaced. du The problem has been confirmed by the Bloomington Acura dealership on December 1st 2025. After doing research online it looks like this has happened to multiple people with different Acura Models, including newer models of RDX, TLX and MDX. No warning lamps, messages or failures appeared. Just oil leaking beneath the vehicle. It looks like Acura is aware of the issue. The metal shavings from the splines between the transmission and transfer case is destroying the seal. Causing the oil leak hence a new transmission and transfer case.

Dec 8, 2025Open
Visibility⚠️ High
VISIBILITY/WIPER

I closed my driver door and the back window just shattered. The glass just exploded.

Dec 3, 2025Open
Visibility🔵 Low
VISIBILITY/WIPER

My car was parked in my driveway. After starting it up and closing my driver’s side door, the entire rear windshield spontaneously shattered without warning or any external manipulation/force. There was no way of knowing of whether or not this would happen. I fear that if I had my dogs in the car (or a child) someone could have been seriously hurt. Shards of glass went everywhere - in the trunk, all over the cargo area, and all over my driveway. I am now stuck without a car while I try to get this repair figured out. Acura/Honda needs to place a recall on this ASAP after seeing how common of an issue it is for many RDX (and other models) owners.

Dec 3, 2025Open
Engine/Powertrain🔵 Low
POWER TRAIN

The transfer case began leaking between the transmission and transfer case. Upon taking it to a mechanic I’ve been told the entire transfer case needs replacement because it has prematurely failed. The repair cost is $5533.00. Through research I’ve seen there are many failing transfer cases on acuras with the SH all wheel drive systems. I believe Acura has a design flaw in the system and should be responsible for the repair.

✨ AI Insight

This complaint matches keywords from official recalls:

Recall #21V939000

*correlation estimated by AI, not an official NHTSA link.

Nov 6, 2025Open
Visibility🔵 Low
VISIBILITY/WIPER

Rear window spontaneously shattered

Oct 28, 2025Open
Other🔵 Low
UNKNOWN OR OTHER

Complaint Summary I am filing this complaint regarding American Honda Motor Corp’s handling of a warranty claim on my 2021 Acura RDX. Despite being within the 4-year/50,000-mile warranty, I was denied full coverage for a well-documented defect: condensation/moisture in both headlight housings with no external damage. •Dealer (Rick Case Acura, Sunrise FL) confirmed the condition. •Technician Francisco documented internal moisture, no external damage. •Service Manager Wade Bell submitted goodwill request [XXX], which was approved at 70% only. •My out-of-pocket responsibility was ~$1,400. •I requested full coverage from American Honda, consistent with Acura’s warranty obligations and known issues with these headlight assemblies. On a recorded call, American Honda repeatedly stated my request was denied, refused to provide a written denial, and declined to issue a case reference number directly. Only after reviewing an email did I locate the case number ([XXX]). This refusal to document their denial is highly concerning. ________________________________________ Timeline of Events •[XXX]: Moisture first observed after rain; confirmed by dealer technician. •Dealer Request: Goodwill [XXX] approved at 70%. •Repairs Completed: Both headlights replaced; repair order available. •Sep 2025: American Honda denied my appeal verbally on recorded call; refused written denial. ________________________________________ Manufacturer Guidance Ignored Importantly: American Honda’s own dealer service bulletin (2023) regarding 2019–2021 Acura RDX headlamps explicitly instructs dealers to: •“Create an iN case number (via AcuraLink/Dealer iN) when moisture or condensation is observed inside RDX headlamp housings with no external damage present.” •“Submit for goodwill/warranty replacement of the affected headlamp assemblies.” This vehicle falls squarely within that guidance: a 2021 RDX, <4 years old, <50k miles, with moisture documented by the dealer. Despite this, A INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Sep 22, 2025Under Review

Frequently Asked Questions

'What are common problems reported with the 2021 Acura RDX?'

'Common problems include concerns regarding the driveshaft and front passenger airbag sensor. Owners have reported noises indicating potential driveshaft failure as well as issues surrounding airbag deployment due to sensor malfunction.'

'How does recall history impact my decision on buying a used Acura RDX?'

'A recall history is vital when considering a used vehicle; especially with concerns over safety features like airbags and critical components such as drivetrains. Always check if repairs were done per recall notices before finalizing your purchase.'

📊Year-over-Year Context

📈Improving Trend

Compared to earlier years, the 2021 model shows improving reliability trends, largely due to manufacturing refinements addressing 2020 issues. Recall frequency decreased 50%.

🧭What This Means for You

Both current owners and prospective buyers benefit from reviewing this safety analysis before making decisions.

If you're unsure, we recommend starting with a VIN check or consulting a certified mechanic.

🔑

If You Own This Vehicle

  • Immediate Action: If any recalls are listed as 'incomplete', contact a certified ACURA service center—repairs are performed at no cost to you.
  • Unaddressed recalls pose real-world risks. Prioritize scheduling any pending repairs to maintain vehicle integrity.
  • Proactive tip: Enroll in ACURA's owner notification program for real-time safety updates.
🛒

If You're Buying Used

  • Obtain proof of recall completion for all 2 campaigns before purchase.
  • Account for potential service downtime when calculating your initial ownership budget.
⚖️

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Data sourced from the National Highway Traffic Safety Administration (NHTSA). Last updated: February 23, 2026.