Diagsheet

Fourth generation (NX4, LWB, US, spec)

2021 Hyundai Tucson

  • 78owner complaints
  • 1recalls
  • 2involved a crash
  • 36,300median miles at failure

Newest report Aug 29, 2026 · checked Sep 9, 2026

miles

2021 Hyundai Tucson
Photo: HJUdall, Wikimedia Commons, CC0

When each problem shows up

Each bar covers the middle half of the mileages owners reported for that problem. A quarter saw it earlier, a quarter later. The tick is the median. Most reported: engine failure, knocking or rod bearing, 22 complaints.

0k25k50k75k100k125k150kyou
Engine failure, knocking or rod bearing22 reports

middle half of reports, median tick. Darker bars have 75 or more reports.

Behind you

    Around your mileage

      Ahead of you

        How this compares

        2021 Hyundai Tucson78
        Median 2021 model here (35 vehicles)286
        Median 2021 SUV here (20)332

        78 complaints is 3.7 times fewer than the median 2021 model on this site and 4.3 times fewer than the median 2021 SUV. Among the 13 Tucson model years here it ranks 12th for complaints. Counts follow sales volume as much as reliability, so a truck that sells 700,000 a year draws more reports than a sedan that sells 200,000.

        Complaints filed by year

        1621
        322
        823
        824
        1725
        2626

        26 complaints came in 2026. Owners file in waves when a problem gets press or an investigation, so a spike measures attention as much as failures.

        NHTSA investigations

        AQ23-002opened Nov 17, 2023
        Service Brakes, Hydraulic · model years 2010 to 2021

        Hyundai and kia abs module fires. Open.

        NHTSA summary
        The Office of Defects Investigation (ODI) has received eight Hyundai Motor America (Hyundai) and eight Kia America, Inc. (Kia) Part 573 Recall Reports between 2016 and 2023. The combined 16 safety recalls all involve the antilock braking system (ABS) modules or Hydraulic Electronic Control Units (HECU) manufactured by the equipment supplier Mando. The Part 573 Recall Reports contain varying defect descriptions and differing remedy descriptions for the same or similar equipment supplied by Mando. Safety recalls included in this Audit Query (AQ) review include: Hyundai recalls 20V-520, 20V-543, 21V-161, 21V-160, 21V-303, 22V-056, 22V-810, and 23V-651. Kia recalls 16V-815, 20V-518, 20V-519, 21V-137, 21V-331, 22V-051, 22V-800, and 23V-652 The purpose of this AQ is to evaluate the timeliness and scoping of Hyundai and Kia’s defect decision making and adherence with reporting requirements; and understand the varying defect descriptions and remedies between these recalls.

        Recalls that include the 2021 Hyundai Tucson

        Whether your car is included depends on its VIN. Check yours at nhtsa.gov/recalls.

        20V-543Sep 4, 2020
        Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip:Control Unit/Module

        Hyundai Motor America (Hyundai) recalled certain 2019-2021 Tucson vehicles on September 4, 2020. On December 30, 2020, Hyundai expanded the recall population, and added certain 2016-2018 Tucson vehicles. The Anti-lock Brake Hydraulic Electronic Control Unit (HECU) could corrode internally and cause an electrical short, possibly resulting in an engine compartment fire.

        Risk and remedy
        Risk: An engine compartment fire can increase the risk of injury or crash.
        Remedy: Hyundai will notify owners, and dealers will replace the HECU fuse. For 2019-2021 model years, the Electronic Stability Control (ESC) software will also be updated. Recall repairs will be performed free of charge. Owners are advised to park outside and away from structures as a precaution until the recall repair is complete. The recall began November 2, 2020. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 195.

        Other model years

        201419420152262016161620171084201839420193772020176202178202238020231312024942025278202659