2018 Acura RLX: complaints, problems and recalls
Explore the records behind recurring owner reports.
Key facts
6 owner complaints analyzed
1 distinct recall campaigns
92,000 mi median reported failure mileage
Scope: 2018 model year. Data snapshot: . 3 complaints include usable failure mileage.
This selection has limited data. It remains available for lookup but is excluded from search indexing.
Most common problems
Engine is the most frequently named component, appearing in 2 of 6 complaints (33.3%). A complaint can name multiple components.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Engine | 2 |
| Electrical System | 1 |
| Electrical System:Starter Assembly | 1 |
| Engine And Engine Cooling | 1 |
| Engine And Engine Cooling:Engine:Crank/Camshaft Position Sensor | 1 |
| Fuel System, Gasoline | 1 |
Engine: 2; Electrical System: 1; Electrical System:Starter Assembly: 1; Engine And Engine Cooling: 1; Engine And Engine Cooling:Engine:Crank/Camshaft Position Sensor: 1; Fuel System, Gasoline: 1
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 0 |
| 25,000 to 49,999 | 0 |
| 50,000 to 74,999 | 1 |
| 75,000 to 99,999 | 1 |
| 100,000 to 149,999 | 1 |
| 150,000 and above | 0 |
Under 25,000: 0; 25,000 to 49,999: 0; 50,000 to 74,999: 1; 75,000 to 99,999: 1; 100,000 to 149,999: 1; 150,000 and above: 0
50,000 to 74,999 miles has the most reports with usable mileage (1). 3 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 3 |
2024: 2; 2025: 1; 2026: 3
Pattern summary
Engine leads the component reports. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Examples from the source records
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11624761 · 2024-11-12 (November 12, 2024)
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
Owner-reported narrative. Look up ODI 11624761 at NHTSA ↗
Owner report 11628568 · 2024-12-03 (December 3, 2024)
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.
Owner-reported narrative. Look up ODI 11628568 at NHTSA ↗
Owner report 11642306 · 2025-02-12 (February 12, 2025)
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 cont…
Owner-reported narrative. 92,000 miles reported. Look up ODI 11642306 at NHTSA ↗
Owner report 11722582 · 2026-03-06 (March 6, 2026)
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.
Owner-reported narrative. 110,785 miles reported. Look up ODI 11722582 at NHTSA ↗
Owner report 11738529 · 2026-05-18 (May 18, 2026)
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.
Owner-reported narrative. 51,000 miles reported. Look up ODI 11738529 at NHTSA ↗
Owner report 11741672 · 2026-06-02 (June 2, 2026)
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 ro…
Owner-reported narrative. Look up ODI 11741672 at NHTSA ↗
Recall history
1 distinct campaigns affect this selection. Announcement dates below are different from vehicle model years. A campaign may cover multiple years.
23V858000 · Fuel System, Gasoline:Delivery:Fuel Pump
Reported: 2023-12-18 (December 18, 2023)
Honda (American Honda Motor Co.) is recalling certain 2013-2023 Honda Accord, Civic Coupe, Civic Sedan, Civic Hatchback, Civic Type R, CR-V, HR-V, Ridgeline, Odyssey, Acura ILX, MDX, MDX Hybrid, RDX, RLX, TLX, 2019-2022 Honda Insight, Passport, 2020 Honda CR-V Hybrid, 2018-2019 Honda Clarity PHEV, Fit, and 2015-2020 Honda Accord Hybrid, Pilot, Acura NSX vehicles. The fuel pump inside the fuel tank may fail.
Consequence: Fuel pump failure can cause an engine stall while driving, increasing the risk of a crash.
Remedy: Dealers will replace the fuel pump module, free of charge. Owner letters were mailed September 6, 2024. Owners may contact Honda customer service at 1-888-234-2138. Honda's numbers for this recall are KGC and KGD. This recall is an expansion of NHTSA recall numbers 21V-215 and 20V-314.
NHTSA campaign record ↗