2018 ACURA RLX Problems

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Complaints Reported

Complaints by Component

ENGINE

2 complaints

The first time I heard the engine noise was on [XXX]. I brought the vehicle to the Schaumburg Muller Acura dealership and dropped it off on May 20. On May 21, the dealership performed an initial inspection and informed me that they needed authorization to further disassemble the engine in order to determine the cause of the problem. I provided that authorization, and by May 22 the engine had been torn down to the point where the failure could be identified. On May 22, I spoke with my service advisor, Ken, who informed me that the connecting rod bearings were worn and that the engine would need to be replaced. I was sent photographs, a video, and an estimate for the repair totaling $12,943.83. While I was shocked by the cost, Ken advised me that the dealership would be contacting Acura to request goodwill assistance on my behalf. Because this occurred immediately before the Memorial Day weekend, several days passed before I received an update. On May 30, a different service advisor informed me that Acura had approved $8,000 in goodwill assistance. During that conversation, he asked me, “The original estimate was around $16,000, right?” I knew that was incorrect, as the estimate I had received was $12,943.83. Concerned by the discrepancy, I contacted Acura Customer Relations on June 1 and opened a case for review. Later that same day, I spoke with Ken and provided him with the case number. During that conversation, he informed me that the original estimate had been incorrect because certain parts and/or labor had allegedly been omitted. I was then told that the actual repair cost would be approximately $18,000 to $19,000 plus tax. While I can understand minor adjustments to an estimate, a difference of several hundred dollars or even $1,000 might be reasonable. However, an increase of approximately $6,000 from the original estimate is extremely concerning and raises serious questions about the accuracy of the repair assessment and cost estimate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Jun 02, 2026

My vehicle has the same 3.5 liter naturally aspirated V6 that comes in the Acrua MDX which is currently on recall for connecting rod bearings on vehicles with 3.5-liter V6 engines can fail, leading to complete engine failure. my car has the excact same engin with the exact same problem. i have the full diagnosis and estimate from Acura ENGINE REPLACEMENT

Nov 12, 2024

ELECTRICAL SYSTEM,ENGINE AND ENGINE COOLING

1 complaint

The contact owns a 2018 Acura RLX. The contact stated while driving her vehicle at an undisclosed speed, stated that the vehicle would not start up, and noticed every single waring light illuminated up on her dash. The vehicle was taken to a dealer twice, first time it was diagnosed to have a crank sensor failure, it was replaced. Two days after, the issues reoccurred, where it was diagnosed to be the engine starter. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 51,000.

May 18, 2026

ELECTRICAL SYSTEM

1 complaint

The contact owns a 2018 Acura RLX. The contact stated that while attempting to start the vehicle, the headlight failure message was displayed. A dealer was contacted. The vehicle was taken to the dealer, where it was diagnosed that the A/C compressor needed to be replaced. The vehicle was not repaired. The contact stated that the failure started occurring in 2023. The manufacturer was notified of the failure and informed the contact that, because she was not the first owner, assistance was denied. The approximate failure mileage was 110,785.

Mar 06, 2026

ENGINE AND ENGINE COOLING

1 complaint

The contact owns a 2018 Acura RLX. The contact stated while driving 30 MPH, the oil change and tire rotation messages were displayed. The contact stated that a dealer was contacted. The contact stated that an oil change and tire rotation were performed, and the contact was informed that the engine was knocking. The contact received a call notification from the dealer two days after the vehicle was repaired regarding the connecting rod bearing. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that the VIN was not included in NHTSA Campaign Number: 23V751000 (ENGINE AND ENGINE COOLING). The manufacturer was notified of the failure and stated that the issue would be escalated to a higher department. The failure mileage was 92,000.

Feb 12, 2025

FUEL SYSTEM, GASOLINE

1 complaint

The contact owns a 2018 Acura RLX. The contact received notification of NHTSA Campaign Number: 23V858000 (Fuel System, Gasoline); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Dec 03, 2024

4.4/5.0

55 reviews

ACURA RLX VIN Decoder — Free VIN Check Video Guide

Watch our quick ACURA RLX VIN decoder walkthrough. Learn how to decode any ACURA RLX VIN number to get full vehicle history, recall alerts, specifications, fuel economy (MPG), safety ratings, and known problems — completely free on ForCar.org.

Where to Find VIN for Problems Check

To check for problems and complaints on your 2018 ACURA RLX, you'll need the VIN number. Find your VIN in one of these 4 common locations.

Where to Find VIN Number on 2018 ACURA RLX for Problems Lookup - Dashboard, Door Jamb, Engine Bay, Documents

Understanding VIN Structure for Problem Reports

Each character in your 2018 ACURA RLX 17-digit VIN helps identify specific complaints and problems affecting your vehicle model.

2018 ACURA RLX VIN Structure for Complaint Verification - WMI, VDS, Check Digit, Model Year, Plant Code

How to Check 2018 ACURA RLX Problems in 3 Steps

Locate Your VIN

Find the 17-character VIN on your 2018 ACURA RLX dashboard (visible through windshield), door jamb, engine bay, or vehicle documents.

Review by Component

Browse owner-reported complaints organized by vehicle component (engine, transmission, brakes, electrical) to identify common issues and problem patterns for this model year.

Check Safety Issues

Review crash and fire incidents for each component to assess safety concerns. Contact your ACURA dealer or report problems to NHTSA at SaferCar.gov.

Frequently Asked Questions

How many problems does the 2018 ACURA RLX have?

The 2018 ACURA RLX currently has 6 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2018 ACURA RLX?

The most common problems reported for the 2018 ACURA RLX are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2018 ACURA RLX problem data come from?

All problem and complaint data for the 2018 ACURA RLX comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.

How do I report problems with my 2018 ACURA RLX?

You can report safety problems with your 2018 ACURA RLX directly to NHTSA at SaferCar.gov or call 1-888-327-4236. Your complaint helps identify patterns and may lead to recalls or investigations.

Where can I find my VIN to check problems?

Your 2018 ACURA RLX VIN is located in 4 places: (1) Dashboard near windshield on driver's side, (2) Driver's door jamb sticker, (3) Engine bay, (4) Vehicle registration and insurance documents.

Is the 2018 ACURA RLX reliable?

Reliability can be assessed by reviewing the number and severity of owner complaints for the 2018 ACURA RLX. Check complaints by component, crash reports, and fire incidents above to evaluate potential issues and problem patterns.