2021 Acura RDX problems and complaints
Owners have filed 118 complaints with NHTSA about the 2021 Acura RDX. The most-reported areas: Unknown Or Other (31), Engine (24), Service Brakes (16).
Key takeaways
- 118 owner complaints on file with NHTSA.
- 3 involve a crash, 0 a fire, 1 reported injury.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Unknown Or Other | 31 | 26% |
| Engine | 24 | 20% |
| Service Brakes | 16 | 14% |
| Power Train | 13 | 11% |
| Air Bags | 11 | 9% |
| Visibility/Wiper | 10 | 8% |
| Electrical System | 10 | 8% |
| Structure | 10 | 8% |
| Vehicle Speed Control | 7 | 6% |
| Forward Collision Avoidance | 6 | 5% |
| Seats | 6 | 5% |
| Seat Belts | 5 | 4% |
One complaint can name several components, so shares add up to more than 100%.
Parts for the 2021 Acura RDX
GarageDex's verified specs for this car. Each Buy button searches Amazon for that exact part.
- Battery
- Engine oil
- Engine air filter
- Cabin air filter
- Wiper blades
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| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2021 Acura RDX SUV FWD | 5/5 | 4/5 | 5/5 | 4/5 |
| 2021 Acura RDX SUV AWD | 5/5 | 4/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Engine - filed 2026-10-29
My 2021 Acura RDX A-Spec AWD had approximately 89,000 miles when this incident occurred on [October 23rd] on I-10 in Tempe Arizona]. My wife was driving when the vehicle displayed emissions and brake-system warnings, lost power and slowed unexpectedly. She was unable to restart it at that time. The unexpected loss of ...
Seat Belts - filed 2026-10-21
The contact owns a 2021 Acura RDX. The contact stated that the front passenger’s side seat belt retractor failed to retract as needed. The vehicle was taken to a dealer and was inspected and repaired. The failure mileage was 42,000
Visibility/Wiper - filed 2026-10-12
Rear window shattered spontaneously twice. 9/12/24 & 10/11/26
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More for the 2021 Acura RDX
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.