2001 model year · 0+ owner reports · Updated April 2026
According to Au7o's analysis of 0+ owner reports, the 2001 Hyundai XG350 has 2 documented known issues, with 1 rated critical. The most serious is Timing Belt Tensioner Failure (3.5L Sigma V6) ($500-$1,200 repair). Across all issues, repair costs range from $150 to $1,200. DIY maintenance guides at au7o.io.
On the 2001-2005 Hyundai XG350 3.5L Sigma V6, the 3.5L Sigma V6 engine in the XG350 uses a timing belt with a hydraulic tensioner that can fail, allowing the belt to lose tension. The tensioner bearing can seize or the hydraulic damper can leak, both leading to belt slack and potential timing jump. The Sigma V6 is an interference engine, so a timing belt failure or jump causes catastrophic engine damage. Hyundai recommends timing belt replacement at 60,000-mile intervals, but many XG350 owners defer this service due to cost.
Parts and tips from 0+ owners who fixed this issue
On the 2001-2005 Hyundai XG350, the XG350 power steering system develops leaks from the high-pressure hose, pump shaft seal, and steering rack seals. The rubber power steering hoses deteriorate from heat and age, developing leaks at crimped fittings. The power steering pump shaft seal is another common leak point. A leaking system causes whining on turns, heavy steering effort, and potential pump damage from low fluid. Regular fluid checks and timely hose replacement prevent expensive pump and rack failures.
Parts and tips from 0+ owners who fixed this issue
SUSPENSION
HYUNDAI IS RECALLING 188,282 MY 2001-2004 SONATA AND MY 2001-2004 XG300 AND XG350 VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSACHUSETTS, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WEST VIRGINIA, WISCONSIN, AND THE DISTRICT OF COLUMBIA. ROAD SALT APPLIED IN THESE JURISDICTIONS DURING THE WINTER MONTHS MAY RESULT IN PROGRESSIVE, INTERNAL CORROSION OF THE FRONT SUB-FRAME ON THE VEHICLES, AND MAY RESULT IN THINNING OR PERFORATION OF THE SUB-FRAME STEEL. THE CORROSION IS FREQUENTLY VISIBLE AND OFTEN DISCOVERED DURING INSPECTION OR ROUTINE MAINTENANCE, AND OWNERS MAY ALSO HEAR NOISES OR NOTICE TIRE MISALIGNMENT AND STEERING PULL. IF THESE SIGNALS ARE UNDETECTED OR UNHEEDED, THE CORROSION MAY PROGRESS AND THE FORWARD MOUNTING OF THE LOWER CONTROL ARM MAY DETACH FROM THE SUB-FRAME.
FUEL SYSTEM, GASOLINE:STORAGE
CERTAIN PASSENGER VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 301, "FUEL SYSTEM INTEGRITY" A VALVE ON THE FUEL TANK ASSEMBLY MAY NOT CLOSE PROPERLY. IF A VEHICLE ROLLS OVER AND THE FUEL TANK ASSEMBLY VALVE IS NOT PROPERLY CLOSED, FUEL SPILLAGE MAY OCCUR.
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
SOME PASSENGER VEHICLES CONTAIN A FUEL TANK ASSEMBLY VALVE THAT MAY NOT CLOSE PROPERLY. IF A VEHICLE WITH A FUEL TANK ASSEMBLY VALVE THAT IS NOT PROPERLY CLOSED WERE TO ROLL OVER, FUEL SPILLAGE MAY OCCUR.
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According to Au7o's analysis of 0+ owner reports, the 2001-2001 Hyundai XG350 has 2 documented issues. The most frequently reported are: Timing Belt Tensioner Failure (3.5L Sigma V6), Power Steering System Leak. Of these, 1 is rated critical and should be addressed promptly.
The 2001-2001 Hyundai XG350 has 2 known issues documented across 0+ owner reports. 1 issue is rated critical: Timing Belt Tensioner Failure (3.5L Sigma V6). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Hyundai XG350 issues range from $150 to $1,200, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Timing Belt Tensioner Failure (3.5L Sigma V6), typically costs $500-$1,200 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The 3.5L Sigma V6 engine in the XG350 uses a timing belt with a hydraulic tensioner that can fail, allowing the belt to lose tension. The tensioner bearing can seize or the hydraulic damper can leak, both leading to belt slack and potential timing jump. The Sigma V6 is an interfe… Repairs typically run $500-$1,200. Severity: high.
The XG350 power steering system develops leaks from the high-pressure hose, pump shaft seal, and steering rack seals. The rubber power steering hoses deteriorate from heat and age, developing leaks at crimped fittings. The power steering pump shaft seal is another common leak poi… Repairs typically run $150-$800. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
