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The 2021 RX Hybrid is more reliable than other cars from the same model year.
The Reliability score is based on our latest subscriber survey of 2021 Lexus RX Hybrid owners. The owner comments describe problems respondents experienced with this vehicle.
Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, USB ports, alarm or security system, remote engine start, heated or cooled seats, heated steering wheel, headlights, automatic headlights, automatic wipers, wireless charging pad.
Muffler, pipes, catalytic converter, exhaust manifold, heat shields, leaks.
"Rear wiper motor. Cost was exorbitant to replace or trouble shoot"
Anonymous, NC (2021 Lexus RX Hybrid 450h 3.5-L V6 hybrid)Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control.
"Bad front wheel bearing"
Anonymous, FL (2021 Lexus RX Hybrid 450h 3.5-L V6 hybrid)Infotainment system (audio, GPS, phone), rear entertainment system, backup or other camera/sensors, head-up display.
"We are unable to get Apple Car play to work with the iPhone navigation apps."
Anonymous, NC (2021 Lexus RX Hybrid 450h 3.5-L V6 hybrid)Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.
"When test driving the vehicle in February of 2025, I felt a suspension knocking in the front drivers side. I informed the sales person who had a dealership mechanic check. It was determined the strut was bad. The strut was replaced at no cost before I purchased the vehicle."
Anonymous, WI (2021 Lexus RX Hybrid 450h 3.5-L V6 hybrid)Alternator, starter, hybrid battery replacement, hybrid battery related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, spark plugs and wires failure, auto stop/start.
Sensors (O₂, or oxygen, sensor), emission-control devices (includes EGR), fuel-injection system, fuel gauge/sender, fuel pump, problems filling up the tank.
Electric drive failure, replacement or malfunction.
Premature pad/rotor wear, pulsation or vibration, antilock system, parking brake, master cylinder, calipers, squeaking, brake failure, regenerative braking.
AC compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
Electric/hybrid battery pack failure, replacement or malfunction, or cooling.
Transmission rebuild or replacement, torque converter, premature clutch replacement.
Engine rebuild or replacement, cylinder head, head gasket, turbocharger or supercharger, timing chain or belt.
Squeaks, rattles, wind noises, seals and/or weather stripping, air and water leaks.
Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, fuel leaks, oil leaks.
Paint (fading, chalking, peeling, or cracking), loose interior or exterior trim or moldings, rust.
Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (power or manual), seat belts, sunroof, convertible top, glass defect.
Gear selector and linkage, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission, leaks.
"On several occasions the car failed to start, sometimes after being turned off for 10 minutes, sometimes for 2 days of non-use."
Anonymous A., ON (2021 Lexus RX Hybrid 450h 3.5-L V6 hybrid)