There are 4 stored owner reports matching the engine leading-label group for the 2021 Acura RDX in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)during acceleration on highway to pass a vehicle the Acura RDX lost power and decelerated. Check engine light came on....engine lost power to accelerate/maintain highway speed almost causing an accident.
Incident happened on, 22 July 2021- Rainy day, accelerated vehicle to pass, vehicle went limb unresponsive, check engine blinking, needed to stop in Highway 4. Almost got rear-ended by semi trailer, fortunately made maneuver for emergency stop. Turned vehicle off for a few minutes, while my heart settled and turned vehicle back on check engine was no longer blinking and vehicle was once more responsive. 24 July 2021, I am currently in Acura Autonation Dealer in Sanford for maintenance appointment and informed them of issue. I am waiting for their system to come up since they are currently having issues, hopefully I will receive further info on malfunction of vehicle.
I was driving in the rain, accelerated to pass a vehicle and the engine lost power. The check engine light came on and the car went into "limp" mode. The car would barely go 40 mph on a highway and the speed seemed to be continuing to decrease. Luckily I was able to pull over and shut the car off. Restarted, the problem appeared to go away. This is a very dangerous situation and I have read other people reporting similar incidents.
2021 RDX A-spec 7322 miles northbound Hwy 95 Nevada to Oregon, raining. Attempted to pass semi, car behind me also passing semi, sudden loss of power, almost hit from behind, risk of on-coming traffic, able to move to right behind semi. Feeble response to any attempt to accelerate, barely limping along, moved to right shoulder and then to pullout, blinking check engine light, no other warning indicators. Idled engine for several minutes, continued to run rough, would not rev, check engine light cycled off, then back on (blinking), then off over period of several minutes. Turned engine off, waited 10 min or so, restarted ok, finished rest of 600 mile journey scared to pass lawnmower. Life-threatening event for my wife and I, several moments of sheer panic. First time this has happened.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.