2018 Acura RLX problems
Light NHTSA footprint — 6 owner complaints. Either a clean record or thin data; we'll show what's there.
The 2018 Acura RLX has 6 NHTSA owner complaints on file (U.S. federal records, as of July 2026). The most-reported system is engine at 3 complaints, typically surfacing around 92,000 miles (~$3,100 to repair). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2015 RLX | 11 | 1 |
| 2016 RLX | 4 | 0 |
| 2017 RLX | 3 | 0 |
| 2018 RLX (this page) | 6 | 0 |
| 2020 RLX | 2 | 0 |
Limited NHTSA data — only 6 complaints on file. The score reflects what's reported, but a small sample skews easily.
Only 6 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data.
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.
Top trouble spots 1 category with 3+ complaints
What owners are saying recent NHTSA-filed complaints · verbatim
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…
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…
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…
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…
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Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Common questions
Is the 2018 Acura RLX reliable?
Limited NHTSA data. Only 6 owner complaints have been filed for the 2018 Acura RLX, which is not enough for a meaningful reliability score. Active recalls (if any) are listed on this page and remain authoritative — those are verified defects regardless of complaint volume. For a confident reliability read we look for at least 10 owner complaints in the federal database.
Should you avoid the 2018 Acura RLX?
Only 6 NHTSA complaints on file — too few for a confident reliability call. Could be a clean record or just thin data. We don't issue a buy/avoid verdict on the 2018 Acura RLX without a meaningful complaint sample — doing so off a handful of filings would be guesswork.
What should I check before buying a used 2018 Acura RLX?
There isn't enough NHTSA complaint data on the 2018 Acura RLX to flag a standout failure pattern. Run the VIN for open recalls — those are free to fix regardless of warranty — get a standard pre-purchase inspection, and ask the seller for service records.
Is the 2018 Acura RLX a good used car to buy?
Hard to say from federal data alone — only 6 owner complaints have been filed. Lean on the recall list above, a pre-purchase inspection, and a vehicle-history report on the specific VIN. Our data tells you what the model is known for; a history report tells you what that exact car has been through.
What's the most common problem on the 2018 Acura RLX?
Based on NHTSA records, the most-reported issue is engine, with 3 complaints filed. Typical failure occurs around 92,000 miles. Average repair cost runs about $3,100 at an independent shop.
What's the most expensive thing that goes wrong?
The engine is one of the costlier repair items. Average repair cost runs about $3,100 at an independent shop. Typical failure occurs around 92,000 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Acura RLX has open recalls?
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.
Is an extended warranty worth it on a 2018 Acura RLX?
Hard to say from NHTSA data alone with only 6 complaints on file. A quality service contract runs $1,800–3,500 over 3 years. The decision comes down to your specific situation: vehicle cost, miles on it, how long you plan to keep it, and whether you can absorb a $3K–$8K repair without straining cashflow. With limited public data on this vehicle, lean on the recall list above and check owner forums before committing.