Looking for Lexus NX300 repair in Phoenix? We work on Lexus vehicles every day and cover the NX300 across model years 2018 to 2020, with honest diagnostics and quotes you approve before work begins.
To help NX300 owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 85 owner complaints on file for the NX300 and 1 safety recall campaign. The most-reported problem areas are fuel/propulsion system (25), engine (13), service brakes (8).
Most-Reported Lexus NX300 Problems
These problem areas come up most often in NHTSA owner complaints for the NX300 (all model years combined). Complaint counts reflect reports filed, not the share of vehicles affected, so popular and older models naturally have more.
| Problem area (NHTSA component) | Complaints | Share | |
|---|---|---|---|
| Fuel/Propulsion System | 25 | 29% | |
| Engine | 13 | 15% | |
| Fuel System, Gasoline | 12 | 14% | |
| Service Brakes | 8 | 9% | |
| Vehicle Speed Control | 7 | 8% | |
| Visibility/Wiper | 6 | 7% | |
| Structure | 5 | 5% | |
| Power Train | 4 | 4% |
Fuel/Propulsion System
25 of the 85 complaints (29%) mention the fuel system. Fuel system problems can cause stalling, hard starts and poor mileage. We test fuel delivery and related sensors to find the real cause. See our no-start diagnostics and check engine light diagnostics pages.
Engine
13 of the 85 complaints (15%) mention the engine and cooling system. Engine and cooling complaints are best caught early in Phoenix, where heat pushes cooling systems and engine oil to their limits. We diagnose warning lights and check coolant, hoses and oil condition. See our check engine light diagnostics and oil change & maintenance pages.
Service Brakes
8 of the 85 complaints (9%) mention brakes. Brake complaints turn up on nearly every vehicle, and Phoenix stop-and-go traffic wears brake parts quickly. We measure pads and rotors, check calipers and fluid, and replace only what is worn. See our brake repair page.
Lexus NX300 Complaints by Model Year
The NX300 model years with the most NHTSA complaints on file are 2019, 2020, 2018. Older model years have had more time to collect reports, so use this table as a guide for what to inspect, not as a verdict on any one vehicle.
| Model year | Complaints on file | |
|---|---|---|
| 2018 | 22 | |
| 2019 | 36 | |
| 2020 | 27 |
Lexus NX300 Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the NX300, so we do not have a model-specific ranking to show. These are the check engine codes we see most often on vehicles in Phoenix heat, and any of them can show up on a Lexus.
| Code | What it means |
|---|---|
| P0420 | Catalyst efficiency below threshold (bank 1) Often a worn catalytic converter, but failing oxygen sensors or exhaust leaks can set it too. Can cause an emissions test failure. |
| P0300 | Random or multiple cylinder misfire Worn spark plugs, failing ignition coils, fuel or vacuum problems. Do not ignore a flashing check engine light. |
| P0171 | System too lean (bank 1) Often a vacuum leak, dirty MAF sensor, weak fuel delivery or a failing oxygen sensor. |
| P0455 | EVAP system large leak Missing or loose gas cap, or a disconnected or cracked vapor hose. |
| P0128 | Coolant temperature below thermostat regulating temperature Usually a thermostat stuck open. Fix it to restore efficiency and cabin heat. |
| P0442 | EVAP system small leak Loose or worn gas cap, cracked hose or purge or vent valve. |
| P0301 | Cylinder 1 misfire Commonly a bad spark plug or ignition coil on that cylinder. |
| P0401 | EGR flow insufficient Clogged EGR passages or a stuck EGR valve. |
Got a check engine light on your NX300? A code is a clue, not a diagnosis, so we scan it and test the system before replacing anything. See our check engine light diagnostics.
Lexus NX300 Safety Recalls
NHTSA lists 1 recall campaign for the NX300 in these model years, most often involving fuel system, gasoline. Recalls are repaired by the manufacturer at no charge to you, but each applies only to certain vehicles. Look up your VIN at nhtsa.gov/recalls.
- 2020 recall, Fuel System, Gasoline (campaign 20V682000): Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry, 2020 Corolla, 2018-2019 Land Cruiser, 2017-2020 Tacoma, 2019-2020...
Serious Incident Reports
Of the NHTSA complaints on file for the NX300, 5 involved a crash, 2 involved a fire, 6 reported injuries. These numbers are drawn from self-reported complaints and are not verified findings. If your vehicle has an open recall, get it repaired promptly.
Keeping a Lexus NX300 Reliable in Phoenix
Arizona heat is the hardest test a Lexus will face. Batteries, belts, hoses, tires and engine oil all wear faster here, and a NX300 that spends its life in stop-and-go Valley traffic needs maintenance earlier than the owner's manual's normal schedule suggests.
Our recommendation for NX300 owners: follow the severe-service schedule, test the battery before every summer, inspect brakes and tires twice a year, and have any warning light diagnosed instead of ignored. If you are shopping for a used Lexus NX300, a pre-purchase inspection shows what the paperwork does not.
Lexus NX300 Services at EZ Swap LLC
Get the details on our Phoenix Lexus NX300 repair service, or choose a service below.
Lexus NX300 FAQ
What are the most common problems with the Lexus NX300?
Based on NHTSA owner complaints, the most-reported problem areas for the Lexus NX300 are fuel/propulsion system (25), engine (13), service brakes (8). Complaint counts reflect reports filed, not the share of vehicles affected.
Which NX300 model years have the most complaints?
The NX300 model years with the most NHTSA complaints on file are 2019, 2020, 2018. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Lexus NX300?
NHTSA complaints rarely cite specific codes for the Lexus NX300. On Phoenix vehicles in general, we see P0420, P0300 misfires, P0171 lean conditions and EVAP leaks such as P0455 and P0442 most often. Bring yours in and we will scan and test it.
Does the Lexus NX300 have any safety recalls?
NHTSA lists 1 recall campaign for the Lexus NX300 across model years 2018 to 2020. Each recall applies only to certain vehicles, so enter your VIN at nhtsa.gov/recalls to see if yours is affected.
Do you repair the Lexus NX300 in Phoenix?
Yes. EZ Swap LLC repairs and maintains Lexus vehicles including the NX300, at 9050 N 9th St in Phoenix. Call or text (602) 246-9063 for an appointment.
Is a pre-purchase inspection worth it for a used Lexus NX300?
Yes. An inspection checks the engine, transmission, brakes, suspension, A/C and electrical system, and scans for stored codes, so you know the real condition before you buy.
How often should I service my Lexus NX300 in Phoenix?
Follow the severe-service schedule in your owner's manual, since heat and stop-and-go driving count as severe use. Test the battery before summer and inspect brakes and tires regularly.
More Lexus Models We Service
Source: public complaint and recall records from the National Highway Traffic Safety Administration (nhtsa.gov). Counts reflect reports filed and do not predict the condition of any individual vehicle.