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NHTSA Federal Consumer Defect Registry

2014 Lexus IS Owner Complaints (12)

Analysis of 12 verified consumer complaints submitted to the National Highway Traffic Safety Administration (NHTSA). Filtered and clustered by vehicle subsystem to identify genuine recurring mechanical and electrical flaws.

Total Complaints
12
Defect Clusters
4 Categories
Avg Failure Range
122k mi
Est. Repair Cost
$280 – $850
Defects & ProblemsSafety Recalls0Owner Complaints12
Switch IS Model Year Complaints
20250 reports20240 reports20230 reports20220 reports20212 reports20204 reports20192 reports20183 reports20179 reports20162 reports20159 reports201412 reports
NHTSA Defect Subsystem Breakdown

2014 IS Failure Distribution by Vehicle Subsystem

100% Normalized Telemetry
38%26%16%12%
Engine & Powertrain:38%
Electrical & Sensors:26%
Steering & Suspension:16%
Brakes & ABS Hydraulics:12%
Airbags & Body Structure:8%
Clustered Telemetry

Top Defect Complaint Groups (4)

Ranked by NHTSA Frequency
ELECTRICAL SYSTEM & BATTERY5 Verified Complaints

Electrical Parasitic Drain, Infotainment & Harness Reports

Medium Severity

Reported Symptoms: Unexplained battery drain after sitting overnight, Infotainment display / instrument cluster blackouts, Accessory malfunction / alternator fault warnings

Median Failure Mileage121,651 milesIQR: 111,976 – 131,325 mi
Estimated Repair Cost$280 – $850 (Source: MazicBay Repair Intelligence Model)
Associated Fault Codes
ENGINE & COOLING3 Verified Complaints

Engine Stalling, Oil Consumption & Cooling Defect Reports

Low Severity

Reported Symptoms: Engine sudden stall / hesitation while driving, Abnormal oil burning / consumption, Check Engine Light (MIL) flashing, Engine overheating / coolant loss

Median Failure Mileage55,000 milesIQR: 35,000 – 75,000 mi
Estimated Repair Cost$950 – $3,200 (Source: MazicBay Repair Intelligence Model)
Associated Fault Codes
FUEL SYSTEM & INJECTION1 Verified Complaints

Fuel Pump Pressure Loss & Fuel Delivery Defect Reports

Low Severity

Reported Symptoms: Sudden loss of propulsion power at highway speeds, Extended engine cranking / failure to restart, Fuel odor near fuel tank / engine bay

Median Failure Mileage55,000 milesIQR: 35,000 – 75,000 mi
Estimated Repair Cost$650 – $1,250 (Source: MazicBay Repair Intelligence Model)
Associated Fault Codes
AIRBAGS & SAFETY RESTRAINTS1 Verified Complaints

Airbag Occupant Detection & Inflator Defect Reports

Critical Severity

Reported Symptoms: SRS Airbag warning lamp illuminated, Passenger occupant classification sensor failure, Seat belt retractor lockup

Median Failure Mileage55,000 milesIQR: 35,000 – 75,000 mi
Estimated Repair Cost$400 – $1,200 (Source: MazicBay Repair Intelligence Model)
Associated Fault Codes
Full Reliability Report2014 IS Common ProblemsFederal Safety Recalls2014 IS Recalls (0)All Generation YearsIS Multi-Year Hub