This page covers 1 recall, 67 owner complaints, NHTSA crash-test ratings and EPA fuel economy for the 2021 Hyundai Tucson.
23–25 mpg combined
9.4–10.2 L/100km
Small Sport Utility Vehicle 2WD
Fuel economy data from fueleconomy.gov (EPA / U.S. Dept. of Energy). Annual cost based on 15,000 mi/yr at 55% city driving and current fuel prices. MPG is U.S. gallons; L/100km converted. Ranges reflect the 4 tested variants for this model year.
5/5 Overall
NHTSA 5-Star Safety Rating
Engine complaints dominate what 2021 Tucson owners report, making up the bulk of the 67 filed. The most common pattern involves the knock sensor fault code P1326, which owners describe triggering limp mode and sudden power loss while driving, sometimes repeatedly across different mileage intervals on the same vehicle. A separate but notable cluster involves excessive oil consumption, where owners report oil dropping significantly between changes with no visible external leak, sometimes accompanied by smoke from the exhaust. A smaller share of complaints point to broader electrical issues: owners describe multiple warning lights illuminating together, intermittent key fob problems, and ABS or stability control system faults. Powertrain and brake complaints round out the picture at much lower volumes. The P1326/limp mode pattern is the clearest recurring theme, with several owners reporting the issue surfacing multiple times and requiring towing.
67
Total Complaints
2
Crash-Related
3
Fire-Related
6
With Injuries
By System
At a glance
What can fail
The Anti-lock Brake Hydraulic Electronic Control Unit can corrode internally, causing an electrical short that may start an engine compartment fire.
What the fix does
Dealers will replace the HECU fuse and update ESC software on 2019-2021 models at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
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Driver Assistance
Ratings from NHTSA's New Car Assessment Program (NCAP). Based on 2 tested variants; worst-case ratings shown.
Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
