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EnginePart report

2014 Acura RLX Engine Problems

Complaints
7about this part
Share
8%of 84 total for the year
Median mileage
44,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the engine of the 2014 Acura RLX, 8% of the 84 complaints for this model year. Where a mileage was given, the median is 44,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“The last month or so, I have had issues with the rear end fishtailing for a few seconds that would correct itself. Today after I pulled out of work, the car fishtailed when I was entering the highway. All the warning lights started flashing-paws, brake assist,power steering, hill,lane departure,etc. The power to engine was cut, steering wheel alignment off. Very scary on a 65 MPH highway. I got to my garage and they checked it out. The error codes showed rear wheel steering but nothing further. They had no idea what caused and how to fix. The code did not help. …”

NHTSA complaint #11338028, filed 2020-07, 111,000 miles

“Vehicle will not shift into 3rd gear at random times - this can be when under moderate load to light load. This will limit the car to a speed to approx. 50mph, the transmission will not shift until the vehicle has slowed down 10+MPH and sometimes will require you to come to a dead stop to function correctly. This has caused a handful of safety risk as you cannot force the vehicle to come to a complete stop in some instances - like merging on a highway or a highway without a shoulder. …”

NHTSA complaint #10551628, filed 2013-11, 1,500 miles

“2014 Acura RLX Advance suffered an Engine Failure from internal bearing defect. The vehicle was meticulously maintained by Acura dealerships, and had extensive service records. While driving, the engine produced a knocking sound, then abruptly shook and died. The Engine has seized, and exactly has the same problem with Honda/Acura 3.5l V6s recalls. Diagnostics after Engine failure included inspecting Engine Turning over, Timing Belt (which was pristine) to rule out any other causes.”

NHTSA complaint #11732004, filed 2026-04

“The contact owns a 2014 Acura RLX. The contact stated while driving 35 MPH and making a left turn, the steering wheel became firm. The contact stated that the vehicle started to fishtail, and the brakes, WU-TWC, ABS and several other unknown warning lights were illuminated. The vehicle was taken to a dealer where it was diagnosed that the rear toe control actuator had failed. The vehicle was not repaired due to the dealer informing the contact that issue was not safety related. The manufacturer was made aware of the failure and informed the contact that the issue was not a safety concern. …”

NHTSA complaint #11536934, filed 2023-08, 40,000 miles

“The contact owns a 2014 Acura RLX. The contact stated that while driving approximately 60 MPH, the vehicle loss motive power. The contact stated the failure continued to occur periodically. The vehicle was able to restart. The lane control, forward control collision, slip differential and hill assist warning lights were illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The contact was concerned about driving the vehicle. The contact stated that the failure was related to NHTSA Campaign Number: 15V301000 (Forward Collision Avoidance). …”

NHTSA complaint #11434102, filed 2021-09, 89,000 miles

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2018233%
201519%
201478%

Other parts of the 2014 Acura RLX

Steering
49 complaints
Suspension
17 complaints
Electronic stability control
12 complaints
Electrical system
10 complaints
Forward collision avoidance
6 complaints
Lane departure
5 complaints
Other or unknown
5 complaints
Wheels
5 complaints
Brakes
3 complaints
Transmission and drivetrain
3 complaints
Vehicle speed control
3 complaints
Air bags
2 complaints

← All problems reported for the 2014 Acura RLX

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology