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2018 Acura

RDX AWD

Auto (S6), 6 cyl, 3.5 L

Acura RDX: best and worst years
2018 Acura RDX AWD

Closest available photo (2019 model year); you're viewing the 2018.

2019 photoKevautoCC BY-SA 4.0Wikimedia Commons

Overview

Body
Small Sport Utility Vehicle 4WDEPA, from EPA, last updated 6/11/2026
Drivetrain
All-Wheel DriveEPA, from EPA, last updated 6/11/2026
Transmission
Automatic (S6)EPA, from EPA, last updated 6/11/2026
Powertrain
GasEPA, 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
NoEPA, from EPA, last updated 6/11/2026

Efficiency

MPG Hwy
27 mpgEPA, from EPA, last updated 6/11/2026
MPG City
19 mpgEPA, from EPA, last updated 6/11/2026
MPG Comb
22 mpgEPA, from EPA, last updated 6/11/2026
Fuel $/yr
$3,500EPA, from EPA, last updated 6/11/2026
CO₂
402 g/miEPA, from EPA, last updated 6/11/2026
Eco Score
4/10EPA, from EPA, last updated 6/11/2026
Smog score
3/10
Elec. Range
0 miEPA, from EPA, last updated 6/11/2026
Real-world MPG
21.5 mpg, reported by 1 driverabout 0.5 mpg below the EPA combined estimate
SmartWay certified
No

Dimensions & capacity

Length
183 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Width
74 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Height
67 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Wheelbase
106 inNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026
Curb Weight
3,856 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/4/2026

Safety NHTSA, model year

Overall crash rating
★★★★★
Rollover rating
★★★★
Stability control (ESC)
Standard
Forward-collision warning
Optional
Lane-departure warning
Optional
Recalls
1
Owner complaints
73
Reported injuries
3

Reported problems NHTSA owner complaints, model year

  • FUEL SYSTEM, GASOLINE18%
  • FUEL/PROPULSION SYSTEM16%
  • ENGINE10%
  • POWER TRAIN10%
  • ELECTRICAL SYSTEM7%
  • UNKNOWN OR OTHER7%

Source: NHTSA owner complaints, 97 total.

Acura RDX: best and worst years

Known issues manufacturer service bulletins, model year

50 service bulletins filed with NHTSA for this model year

  • Jun 4, 2025POWER TRAINONL6T806032025 Acura Form

    Owner Notification Letter - Under certain circumstances, the torque converter lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock-up piston. The reduced lock-up clutch capacity results in the transmission indicator flashing “D” and sets DTC P0741 Torque Converter Clutch Circuit Performance or Stuck Off.

  • Jun 3, 2025POWER TRAINONL6T806032025 Acura Lett

    Owner Notification Letter - Under certain circumstances, the torque converter lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock-up piston. The reduced lock-up clutch capacity results in the transmission indicator flashing “D” and sets DTC P0741 Torque Converter Clutch Circuit Performance or Stuck Off.

  • Apr 18, 2025ENGINEBEBM04182025901

    Dealer Message - Torque converters may not have been manufactured to proper specifications. As a result, the torque converter lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock-up piston. The reduced lock-up clutch capacity results in the MIL not illuminating. “D” flashes and “Transmission Overheat” message appears setting DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.

  • Apr 18, 2025ENGINEB23-029

    Service Bulletin - The lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock up piston. The reduced lock-up clutch capacity results in the transmission indicator flashing “D” and set DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.

  • Jan 10, 2024ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROLB23-035

    Service Bulletin - The MIL comes on during vehicle operation due to variations in the purge control solenoid valve spring, the valve wears unevenly and intermittently sticks. This may result in setting DTC P0441 (Evaporative Emission (EVAP) System Purge Flow Malfunction).

  • Aug 31, 2023POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTERBBOM08312023901

    Dealer Message - Torque converters may not have been manufactured to proper specifications. As a result, the torque converter lock-up clutch cannot provide adequate holding force due to pressure bleeding down through a crack in the lock-up piston. The reduced lock-up clutch capacity results in the MIL illuminating and set DTC P0741 Torque Converter Clutch Circuit Performance or Stuck OFF.

  • May 2, 2022EQUIPMENTBPO05022022901

    Dealer message - American Honda is investigating a potential quality concern with RDX Accessory Cross Bar kit. Due to this investigation, American Honda is requesting all dealers to return any uninstalled inventory to American Honda for investigation and validation by the supplier.

  • Apr 13, 2022ENGINE AND ENGINE COOLINGBTI&04132022901

    Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & 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.

  • and 42 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.