2018 Acura RLX
The Verdict
Worst problem area
Engine
Engine leads by volume: 4 of 6 complaints (67%) mention it.
Complaints filed rose from 3 in 2017 to 6 in 2018.
Data last changed . Sources: NHTSA complaints and recalls, EPA fuel economy data. Methodology
Cost, Fuel Economy & Complaint History
| Category | 2016 | 2017 | 2018 | 2019 | 2020 | vs. 2018 Midsize Cars |
|---|---|---|---|---|---|---|
| Annual fuel cost ($) | 2,600–3,350 | 2,650–3,350 | 2,750–3,350 | 2,750–3,350 | 2,750–3,350 | |
| Combined MPG | 23–30 | 23–29 | 23–28 | 23–28 | 23–28 | |
| City / Highway MPG | 20–28 / 30–31 | 20–29 / 30 | 20–28 / 29 | 20–28 / 29 | 20–28 / 29 | |
| CO₂ tailpipe (g/mi) | 302–380 | 306–380 | 316–383 | 316–383 | 316–383 | |
| Complaints filed | 5 | 3 | 6 | 0 | 2 | |
| Recalls issued | 0 | 0 | 1 | 3 | 1 | |
| Crash-involved complaints | 1 | 0 | 0 | 0 | 0 | |
| Fire-involved complaints | 0 | 1 | 0 | 0 | 0 | |
| Injuries reported | 1 | 0 | 0 | 0 | 0 | |
| Deaths reported | 0 | 0 | 0 | 0 | 0 | |
| Configurations compared | 2 | 2 | 2 | 2 | 2 |
Not compared: this database has no vehicle sales or registration figures, so a raw count mostly reflects how many were sold, not how safe the vehicle is.
Common questions
How many recalls does the 2018 Acura RLX have?
1 NHTSA recall campaign as of Sep 16, 2026. Check your VIN with NHTSA to see whether one applies to your car.
What is the most common complaint about the 2018 Acura RLX?
Engine: 4 of 6 NHTSA complaints (67%) mention it.
What gas mileage does the 2018 Acura RLX get?
EPA rates it 23–28 MPG combined across 2 configurations.
How much does it cost to fuel a 2018 Acura RLX?
EPA estimates $2,750–$3,350 a year in fuel costs, using EPA's assumptions.
Similar Vehicles
EPA-Rated Configurations (2)
| Configuration | Transmission | Cylinders | Displacement | Drivetrain | Fuel Type | Vehicle Class | City | Highway | Combined | Annual Fuel Cost | CO₂ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Configuration 1 | Automatic (S10) | 6 | 3.5L | Front-Wheel Drive | Premium | Midsize Cars | 20 mpg (low) | 29 mpg | 23 mpg (low) | $3,350 (high) | 383 g/mi (high) |
| Configuration 2 | Automatic (AM-S7) | 6 | 3.5L | All-Wheel Drive | Premium | Midsize Cars | 28 mpg (high) | 29 mpg | 28 mpg (high) | $2,750 (low) | 316 g/mi (low) |
Complaints by Category
| Category | Complaints | Crash-Involved | Fire-Involved | Injuries | Deaths |
|---|---|---|---|---|---|
| Engine | 4 | 0 | 0 | 0 | 0 |
| Transmission & Drivetrain | 0 | 0 | 0 | 0 | 0 |
| Fuel System | 1 | 0 | 0 | 0 | 0 |
| Electrical | 2 | 0 | 0 | 0 | 0 |
| Brakes | 0 | 0 | 0 | 0 | 0 |
| Steering | 0 | 0 | 0 | 0 | 0 |
| Suspension, Wheels & Tires | 0 | 0 | 0 | 0 | 0 |
| Airbags & Restraints | 0 | 0 | 0 | 0 | 0 |
| Driver Assistance & Speed Control | 0 | 0 | 0 | 0 | 0 |
| Body, Seats & Latches | 0 | 0 | 0 | 0 | 0 |
| Visibility & Lighting | 0 | 0 | 0 | 0 | 0 |
| Other | 0 | 0 | 0 | 0 | 0 |
A complaint that names more than one category is counted in each, so the rows can add up to more than the total number of complaints.
Recalls (1)
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP · Campaign 23V858000 · Dec 19, 2023
Defect: 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.