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2018 Acura RLX

HybridGas
Midsize Cars
2 EPA-rated configurations
Data refreshed 2026-09-11
A
Safety Signal
92 / 100 from the NHTSA recall record
RecallsNHTSA campaigns1
Complaintsowner reports to NHTSA9
Crash ratingNHTSA overall5★
Fuel economybest combined, EPA28 mpg
20202019201820172016

The 2018 Acura RLX is sold in the U.S. as a hybrid and gas midsize car with 2 EPA-rated configurations. The most efficient version, the RLX Hybrid, is EPA-rated at 28 mpg combined. NHTSA lists 1 recall campaign for this model year, which gives it a Safety Signal grade of A. Owners have filed 9 complaints, most often about the engine. NHTSA crash-tested it at 5 stars overall.

Specs & fuel economy

Source: EPA fueleconomy.gov
ConfigurationPowertrainDriveEngine / motorCityHwyCombAnnual fuel*
RLX HybridHybridAWD3.5L 6-cyl + 259V Li-Ion282928$2,750
RLXGasFWD3.5L 6-cyl202923$3,350

*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 39714, 39713.

Factory warranty running out?

The 2018 Acura RLX is in the years where transmission, electronics and drivetrain repairs land on the owner. Compare extended-coverage quotes in about two minutes.

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Recalls (1)

Source: NHTSA recall database
▲high

Fuel System, Gasoline

KGC, KGD
2,490,460 vehicles
ProblemHonda (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.RiskFuel pump failure can cause an engine stall while driving, increasing the risk of a crash.FixDealers 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 23V858000reported Dec 18, 2023Honda (American Honda Motor Co.)

NHTSA defect investigations

Electrical System:Propulsion System — Pedestrian alert sounds closed

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matt

Opened Jan 27, 2023 · closed Aug 7, 2023 · action DP22005

Air Bags: Air Bag/Restraint Control Module — Electrical overstress closed

The Office of Defects Investigation (ODI) opened this investigation to determine if the failure of airbags to deploy during severe crashes, in certain vehicles, was the result of a safety related defect.  During the investigation a complex failure was studied that can result in non-deployment of subject vehicle air bags and other restraint system devices in severe crash events. The subject vehicles may be equipped with an airbag control unit (ACU) for the supplemental restraint system (SRS) Electronic Control Unit (ECU) manufactured by ZF-TRW.  The ECU receives signals from crash sensors mounted in the vehicle and deploys the vehicle air bags and seat belt pretensioners in accordance with

Opened Apr 19, 2019 · closed Sep 19, 2024 · action EA19001

Owner complaints

Source: NHTSA complaint database
9complaints filed

0 involved a crash · 0 a fire · 0 injuries · 0 deaths reported

Filed per year: 2018: 1 · 2024: 3 · 2025: 2 · 2026: 3

Most-cited components

Engine3
Engine And Engine Cooling2
Electrical System2
Power Train1
Fuel/Propulsion System1
Fuel System, Gasoline1

What owners describe

“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 o…”Jun 2, 2026 · Engine · NHTSA owner report
“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 w…”May 18, 2026 · Engine And Engine Cooling · NHTSA owner report
“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 stat…”Mar 6, 2026 · Electrical System · NHTSA owner report

Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.

Crash ratings

Source: NHTSA NCAP
ConfigurationOverallFrontalSideRolloverRollover risk
4 DR FWD★★★★★★★★★★★★★★★★★★★★10%

NHTSA New Car Assessment Program. Standard driver-assist: forward collision warning, lane departure warning.

Other RLX model years

A

2020 Acura RLX

1 recalls · 2 complaints

C

2019 Acura RLX

3 recalls · 0 complaints

A

2017 Acura RLX

0 recalls · 3 complaints

A

2016 Acura RLX

0 recalls · 7 complaints

Sources & method

Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). Floor 35. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Complaint counts and NHTSA crash ratings are shown separately and are not blended into the grade.

EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed weekly.

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