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The 2021 Acura RDX has 105 NHTSA owner complaints and 1 active recall campaign on file. Here's the breakdown — what's serious, what's noise, and what a working mechanic would actually do about it.
The 2021 Acura RDX has 105 NHTSA owner complaints and 1 recall on file (U.S. federal records, as of July 2026). The most-reported system is visibility at 14 complaints, typically surfacing around 51,308 miles (~$350 to repair). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2018 RDX | 76 | 0 |
| 2019 RDX | 431 | 0 |
| 2020 RDX | 339 | 0 |
| 2021 RDX (this page) | 105 | 1 |
| 2022 RDX | 30 | 0 |
| 2023 RDX | 20 | 0 |
| 2024 RDX | 11 | 0 |
Solid reliability overall. Common issues are concentrated in a few systems.
Buyable on the data — keep up the usual maintenance and inspect normally.
Our read of the federal NHTSA complaint and recall record for this exact year and model — not a substitute for a pre-purchase inspection. How we score.
Driver-assist features on the tested model: Electronic stability control: Standard · Forward collision warning: Standard · Lane departure warning: Standard
Source: NHTSA New Car Assessment Program — tested configuration: 2021 Acura RDX SUV FWD. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
Here's what this model is known to do — so you can inspect for it, price it in, or make the seller fix it before you sign.
⚠ The one to take seriously: brakes is flagged severe on this model . Inspect it closely on a test drive.
Run the VIN from the listing — 1 active recall on this model. Recall repairs are always free.
Verdict for buyers: 7.6/10 model. The priciest documented failure is engine (~$3,100) — get the seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report tells you what this exact car has been through. Smart buyers get both.
See the full pre-purchase inspection checklist →A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in this vehicle's actual NHTSA record, not generic advice.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
On 12/22/22, I was driving in a 2021 RDX SH-AWD with my pregnant wife and 2 year old son from Media PA to Pittsburgh PA . It was rainy and 35-40 degrees F the whole drive. Approximately 4 hours into the drive we stopped at a rest stop on the PA turnpike to get gas. While…
The contact owns a 2021 Acura RDX. The contact stated while the vehicle was stationary in the driveway, he noticed that the rear windshield had shattered. Upon inspection, the contact stated he did not see any near objects that would have caused the windshield to shatter. The…
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…
Tl* the contact owns a 2021 Acura rdx. The contact stated that while driving, she heard a clunking and rattling sound coming from the front passenger's side wheel well area. During acceleration and stopping, the contact heard a popping sound coming from the rear wheels. The…
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
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.
Mostly yes. With a reliability score of 7.6 out of 10 based on 105 owner complaints filed with NHTSA, the 2021 Acura RDX is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
On the NHTSA data, the 2021 Acura RDX does not need avoiding. Buyable on the data — keep up the usual maintenance and inspect normally. The record behind that call: No systemic severe-failure pattern in the complaint record; Reliability score 7.6/10 — above the segment average; 1 recall campaign on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
Inspect the visibility first — it's the most-reported issue on this model, with 14 owner complaints filed. Typical failure occurs around 51,308 miles. Average repair cost runs about $350 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
It scores 7.6 out of 10 on our NHTSA-based read of 105 owner complaints. The main thing to watch is visibility. Typical failure occurs around 51,308 miles. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
Based on NHTSA records, the most-reported issue is visibility, with 14 complaints filed. Typical failure occurs around 51,308 miles. Average repair cost runs about $350 at an independent shop.
The visibility is one of the costlier repair items. Average repair cost runs about $350 at an independent shop. Typical failure occurs around 51,308 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 105 complaints on file and the costliest repair averaging $350, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.