
Photo may show a different model year; you're viewing the 2020.
Overview
- Body
- Midsize CarsEPA, from EPA, last updated 6/11/2026
- Drivetrain
- All-Wheel DriveEPA, from EPA, last updated 6/11/2026
- Transmission
- Automatic (AM-S7)EPA, from EPA, last updated 6/11/2026
- Powertrain
- HybridEPA, from EPA, last updated 6/11/2026
- Fuel
- PremiumEPA, from EPA, last updated 6/11/2026
Engine & performance
- Cyl
- 6EPA, from EPA, last updated 6/11/2026
- Aspiration
- Naturally aspiratedEPA, from EPA, last updated 6/11/2026
- Start-stop system
- YesEPA, from EPA, last updated 6/11/2026
Efficiency
- MPG Hwy
- 29 mpgEPA, from EPA, last updated 6/11/2026
- MPG City
- 28 mpgEPA, from EPA, last updated 6/11/2026
- MPG Comb
- 28 mpgEPA, from EPA, last updated 6/11/2026
- Fuel $/yr
- $2,750EPA, from EPA, last updated 6/11/2026
- CO₂
- 316 g/miEPA, from EPA, last updated 6/11/2026
- Eco Score
- 6/10EPA, from EPA, last updated 6/11/2026
- Smog score
- 7/10
- Elec. Range
- 0 miEPA, from EPA, last updated 6/11/2026
- SmartWay certified
- No
Dimensions & capacity
- Length
- 198 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
- Width
- 75 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
- Height
- 57 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
- Wheelbase
- 112 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
- Curb Weight
- 4,394 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
- Pass. Vol
- 102 ft³EPA, from EPA, last updated 6/11/2026
- Cargo Vol
- 15 ft³EPA, from EPA, last updated 6/11/2026
Safety NHTSA, model year
- Overall crash rating
- ★★★★★
- Rollover rating
- ★★★★★
- Stability control (ESC)
- Standard
- Forward-collision warning
- Standard
- Lane-departure warning
- Standard
- Recalls
- 1
- Owner complaints
- 2
Reported problems NHTSA owner complaints, model year
- STEERING50%
- VEHICLE SPEED CONTROL50%
Source: NHTSA owner complaints, 2 total.
Acura RLX: best and worst yearsFederal investigations NHTSA defect investigations, model year
DP22005opened Jan 27, 2023ELECTRICAL SYSTEM:PROPULSION SYSTEM
Pedestrian alert sounds
Known issues manufacturer service bulletins, model year
11 service bulletins filed with NHTSA for this model year
May 1, 2024ENGINEB24040A
Service News - Due to On-Board Diagnostic (OBD) regulation change starting with 2019 vehicles, American Honda’s Variable Valve Timing and Lift Electronic Control (VTEC) On-Board Diagnostic monitors are now included in the EGR/VVT OBD Monitor Readiness status group. Due to some customer’s driving patterns, they may not drive in the fashion needed to operate the VTEC (EGR/VVT) that only operates above 5,350 rpm to run the OBD monitoring. Therefore, the EGR/VVT OBD monitor group readiness status is
Aug 25, 2022FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLYONLA8E20220830
Owner notification - Our records indicate that a Emissions Recall has not been completed on this vehicle. When the powertrain control module (PCM) detects a malfunction in one of the odd number transmission gears, it will set one of four diagnostic trouble codes (DTCs). Due to inappropriate calibration of the PCM, the On Board Diagnostic (OBD) system cannot properly clear the transmission permanent DTC as required.
May 10, 2022ENGINE AND ENGINE COOLINGBTI&05102022901
American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RLXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) stored. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
Nov 11, 2021AIR BAGSB21100A
ServiceNews Article - There are several possible causes for the SRS DTC U3000-49 (Internal Failure of the SRS Unit) to be stored. If you can duplicate the DTC, the troubleshooting will take you through the step-by-step process in isolating the faulty component. In most situations, the SRS Unit should be last on the list of components to replace. Here is a quick tip for troubleshooting a faulty seat weight sensor.
Nov 2, 2020POWER TRAINONLA8E11022020
Owner Notification Letter - When the powertrain control module (PCM) detects a malfunction in one of the odd number transmission gears, it will set one of four diagnostic trouble codes (DTCs). Due to inappropriate calibration of the PCM, the On Board Diagnostic (OBD) system cannot properly clear the transmission permanent DTC as required.
Sep 15, 2020ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROLBBOM09152020
Dealer Message - Today, September 15, 2020, Acura is announcing a stop sale and emissions recall for certain 2017-2020 MDX Sport Hybrid and 2014, 2016-2020 RLX Sport Hybrid vehicles that may not properly clear specific diagnostic trouble codes (DTC). Presence of these codes may prevent the vehicle from passing a smog test. Refer to your eResponsibility report or do an iN VIN status inquiry to determine which units in your inventory are affected.
Sep 15, 2020ELECTRICAL SYSTEM:SOFTWAREB20-040
"Service Bulletin - When the PCM detects a malfunction in one of the odd number transmission gears, it will set one of the following DTCs: -P073F (unable to engage gear 1) -P074B (unable to engage gear 3) -P074D (unable to engage gear 5) -P074F (unable to engage gear 7) Due to inappropriate calibration of the PCM, the OBD system cannot properly clear the transmission permanent DTC as required."
Apr 17, 2020FUEL SYSTEM, GASOLINEB19-068
"Service bulletin - The malfunction indicator lamp (MIL) comes on with DTC P0460 (fuel level sensor [fuel gauge sending unit] out of range). Under certain conditions, the PCM software may misinterpret normal fuel level sensor inputs as a malfunction and set DTC P0460 (fuel level sensor [fuel gauge sending unit] is out of range)."
- and 3 more
Source: NHTSA manufacturer communications (technical service bulletins).
Warranty manufacturer terms, by make
- Basic
- 4 yr / 50k mi
- Powertrain
- 6 yr / 70k mi
- Roadside assistance
- 4 yr / 50k mi
- EV battery
- 8 yr / 100k mi
Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.