Model year guide

2021 Lexus NX 300H

Recalls, most-reported problems, crash-test ratings, fuel economy and what a 2021 Lexus NX 300H is worth — from official NHTSA and EPA data. 112 on record.

2021 Lexus NX 300H — representative photo
Representative photo

2021 Lexus NX 300H at a glance

Safety recallsNone
Owner complaints17
Overall safety5 / 5 ★
Combined31 mpg

Included: that car's specs and build sheet, model-year recall campaigns and a fair price.

2021 Lexus NX 300H recalls 0

No NHTSA safety-recall campaigns are on record for the 2021 Lexus NX 300H.

Source: U.S. NHTSA, checked 4 Nov 2026. A campaign covers the model year; to see whether a particular car still needs the repair, check its VIN on NHTSA.gov or ask a franchised dealer.

2021 Lexus NX 300H common problems

The most-reported problem areas across all 17 owner complaints filed with NHTSA — and what to check before you buy.

Engine
Listen for knocks or ticking, check for leaks and blue/white exhaust smoke, and make sure it doesn't overheat. No check-engine light should be on.
Visibility
Test wipers, washers, defrosters and all mirrors. Check the windshield for cracks and any camera/sensor for fogging or faults.
Fuel/propulsion System
Check for fuel or battery warnings, hard starts and stalling. On a hybrid/EV, confirm charging and range behave normally.
Electrical System
Test every electrical feature: windows, locks, infotainment, charging and all lights. Watch for flickering, dead accessories or warning lights.
Service Brakes
Brakes should feel firm and quiet — no grinding, pulsing or pulling. Check for an ABS light and uneven pad/rotor wear.
Tires
Check tread depth, the DOT age date, and that all four tires match with even wear. Look for bulges or cracks.

2021 Lexus NX 300H safety ratings

Overall★★★★★
Frontal crash★★★★★
Side crash★★★★★
Rollover★★★★★
Frontal — driver★★★★★
Frontal — passenger★★★★★
Side — front seat★★★★★
Side — rear seat★★★★★
Side pole★★★★★

Rollover risk: 16.0% — NHTSA's estimated chance of rollover in a single-vehicle crash (dynamic test: no tip).

Source: NHTSA 5-Star Safety Ratings (NCAP), tested as the 2021 Lexus NX 300h SUV AWD. Ratings can differ by body style and drivetrain.

2021 Lexus NX 300H MPG & running costs

Combined31 mpg
City33 mpg
Highway30 mpg
Est. annual fuel cost$2,150
EPA size classSmall Sport Utility Vehicle 4WD
TransmissionAutomatic (AV-S6)
Engine start-stopYes
5-yr fuel cost vs average new car$1,250 less

Source: U.S. EPA / DOE fueleconomy.gov.

Estimated 5-year cost to own

A rough guide to what running a 2021 Lexus NX 300H costs over five years and 75,000 miles.

Fuel (5 yrs)$10,750
Fuel only$10,750
Per mile$0.14

How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.

Investigations & service bulletins

NHTSA defect investigations 1

Pedestrian alert sounds Closed

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that…

NHTSA #DP22005 · Electrical System · opened Jan 2023 · closed Aug 2023

An investigation means NHTSA is examining a possible defect — it is not a recall, and many close without one.

Manufacturer service bulletins 95

Technical notes the manufacturer sent to dealers about known issues and fixes. Useful to mention to a mechanic — they are not recalls and repairs may not be covered. Showing the 10 most recent of 95.

OBSOLETE NOTICE February 2, 2026: This bulletin is now obsolete. Please see L-SB-0004-26.

Bulletin L-SB-0057-22 Rev2 · Electrical System · Feb 2026

Some 2018 – 2025 model year Lexus vehicles equipped with the Enform™ 2.0 Navigation System, require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software.

Bulletin L-SB-0004-26 · Electrical System · Jan 2026

Some 2005 – 2026 Lexus vehicles that have undergone water intrusion may exhibit a condition in which a musty odor is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The purpose of this Service Bulletin is to pr…

Bulletin L-SB-0030-24 Rev2 · Structure · Dec 2025

Some customers may experience operational difficulties with some telematics features which they cannot resolve on their own. These resources, in conjunction with the Repair Manual, are for dealership personnel to assist those customers with user issues, user e…

Bulletin L-TT-0326-23 Rev2 · Electrical System · Aug 2025

The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. The procedures outlined in this Service Bulletin aid in locating, inspecting, and repairing refrigerant leaks.

Bulletin L-SB-0043-23 Rev1 · Electrical System · Jun 2025

To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested b…

Bulletin L-TT-0341-25 · Electrical System · Apr 2025

To assist with the early detection and early resolution of audio related concerns you may be asked to recover MMR data from the head unit. The following steps are instructions on how to retrieve the data from the system and are only to be used when requested b…

Bulletin L-TT-0341-25 · Electrical System · Apr 2025

Some 2010 – 2026 model year Lexus vehicles may exhibit paint stains after the removal of Rapgard™. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard™. The wrinkles may trap water and cause the paint to stain f…

Bulletin L-SB-0017-19 Rev1 · Structure · Feb 2025

Some 2010 – 2026 model year Lexus vehicles may exhibit paint stains after the removal of Rapgard™. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard™. The wrinkles may trap water and cause the paint to stain f…

Bulletin L-SB-0017-19 Rev1 · Structure · Feb 2025

Although the Brake Booster and Brake Booster Pump Assembly are covered by Lexus’s New Vehicle Limited Warranty for 4 years or 50,000 miles (whichever comes first), we at Lexus care about the guests’ ownership experience. Lexus is providing coverage for repairs…

Bulletin 24LE03 · Service Brakes · Jan 2025

Source: NHTSA Office of Defects Investigation, listed for the NX 300H AWD. Model-year data, not specific to one car.

2021 Lexus NX 300H vehicles on record

Other Lexus NX 300H model years

2021 Lexus NX 300H — frequently asked questions

Does the 2021 Lexus NX 300H have any safety recalls?

NHTSA lists no safety-recall campaigns for the 2021 Lexus NX 300H. Whether an individual car still needs a recall repair depends on its VIN — check it on NHTSA.gov or ask a franchised dealer. Recall repairs are done at no charge.

What are the most common problems with the 2021 Lexus NX 300H?

Across all 17 owner complaints filed with NHTSA, the most-reported problem areas are engine, visibility, fuel/propulsion system.

What is the 2021 Lexus NX 300H safety rating?

NHTSA gives the 2021 Lexus NX 300H an overall crash-test rating of 5 out of 5 stars (frontal 4★, side 5★, rollover 4★).

What gas mileage does the 2021 Lexus NX 300H get?

The 2021 Lexus NX 300H has a U.S. EPA estimate of 31 mpg combined (33 city / 30 highway).

Sources: NHTSA (recalls, complaints, crash tests), U.S. EPA (fuel economy). Vehicle data only — CarLogs never shows owner information.