LexusNX300H2018Overview/lexus/nx300h/2018/base/

2018 Lexus NX300H

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 NX300H.

Body SUVTransmission Automatic (AV-S6)

The 2018 Lexus NX300H is a mid‑sized luxury crossover built on Lexus’s well‑known SUV platform, powered by a hybrid powertrain that combines a gasoline engine with electric assistance to deliver EPA‑rated 33/30/31 mpg and an automatic AV‑S6 transmission; it requires a 5.2‑quart charge of 0W‑20 engine oil. In the 20152020 reliability window the NX series saw its peak of 26 complaints in 2015, falling to a low of six in 2020, and the 2018 model itself logged only 19 owner complaints—primarily in the fuel/propulsion area—with no recalls, indicating a solid, dependable entry in the hybrid SUV segment.

Model year2021202020192018201720162015

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity5.2 qtOEM · verified
Engine oil type0W-20OEM · verified
Lug nut torque76 ft-lbsOEM · verified
EPA fuel economy33/30/31 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 47 · 460 CCA battery, OE oil filter 9672335028. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 47 · 460 CCAOEM · verified
Tail / brake / turnCLTSOEM · verified
Tire sizeP225/65R17, P225/60R18OEM · verified
Wheel / rim7, 7.5 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter9672335028 alt 9030179006
Engine air filter1780137021
Spark plug9091901259
Battery2880036133
Front wiper blades8521278011 alt 8522278012
Serpentine belt9091602721
Thermostat163250T030
Cabin air filter8713950100

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (AV-S6)

Dimensions & weight NHTSA vPIC

Overall length182.3 in
Overall width72.8 in
Overall height65 in
Wheelbase104.7 in
Curb weight4045 lb
Track (front / rear)62.2 / 62.2 in
Weight distribution (front / rear)56/44

Ratings & economy EPA / vPIC

EPA city / highway / combined33 / 30 / 31 mpg
DrivetrainAll-Wheel Drive
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 5.2 qt of 0W-20 engine oil, 75W-85 · GL-5 in the differential, DOT 3 brake fluid. Torque lug nuts to 76 ft-lbs. The firing order is 1-3-4-2.

Lubricants & capacities

Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity3.0
Brake FluidDOT 3
Differential Gear Oil75W-85 · GL-5
Differential Gear Oil Capacity1.0 qt
Engine CoolantHOAT
Engine Oil0W-20
Engine Oil Capacity5.2 qt

Engine torques

Crankshaft Pulley and/or Damper Bolts192.0 ft-lbs
Engine Flywheel Bolts96.0 ft-lbs

Chassis torques

Lug Nuts76 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Curb Idle Speed (No Load)1000 rpm
Curb Idle Speed Variance (No Load)50 rpm
Spark Plug ManufacturerLexus
Spark Plug Gap.028
Spark Plug Torque18 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity0.99-1.21 lbs
Oil TypeND 11 Oil
Oil Capacity3.70-4.80 oz
Standard BCI Group Number47
Standard BCI Cranking Performance460 cca

Service checks

RPM44.0-50.0 @ Idle rpm
Residual Pressure21.0.
Engine Compression116

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 25; Rear: 25 replace
Brake Caliper Carrier to Hub Bolt TorqueFront: 79; Rear: 77
Vented Rotor Minimum Thickness for ReplacementFront: .984; Rear: .413
Maximum Rotor RunoutFront: .002; Rear: .0059

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 2 stages
130.0 ft. lbs.30 ft. lbs
290.0
Main Bearings — tightening sequence 3 stages
115.0 ft. lbs.15 ft. lbs
230.0 ft. lbs.30 ft. lbs
390.0

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 10,000 mi; spark plugs at 120,000 mi; coolant every 50,000 mi. The big-interval services (every 50,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

At 5,000 miFloor Mat (inspect)
Every 5,000 miBrake System (inspect) · Floor Mat (inspect) · Tire & Wheel Assembly (rotate) · Universal Vehicle Operation (inspect all fluid levels) · Windshield Wiper Blade (inspect)
Every 10,000 miCabin Air Filter (replace) · Engine Oil (drain & refill) · Engine Oil Filter (replace)
Every 15,000 miAccessory Drive Belt (inspect) · Brake Line (inspect) · CV Joint Boot (inspect) · Engine Coolant System (inspect fluid level) · Engine Oil Cooler (inspect) · Exhaust System (Complete) (inspect)
Every 30,000 miBrake Hydraulic System (drain, refill & bleed) · Brake Rotor (inspect) · Differential (inspect fluid level) · Engine Air Filter Element (replace) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect)
Every 50,000 miEngine Coolant System (drain, flush & refill)
At 60,000 miAccessory Drive Belt (inspect)
At 100,000 miEngine Coolant System (drain, flush & refill)
At 120,000 miSpark Plugs (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2018 Lexus NX300H occupies a transitional point in this generation's federal record, arriving after a steady three-year decline in complaints from 26 (2015) to 11 (2017) but reversing that trend with an uptick to 19 complaints — still well below the generation's opening-year high but notably above the surrounding 2017 and 2019 figures. Recalls remain at zero for 2018, consistent with 2017 and 2020, while TSBs hold at a relatively moderate 138, down significantly from the 213 logged in 2015 and suggesting most early-generation technical issues had been addressed by this point. The top complaint areas — Fuel/Propulsion System (5), Service Brakes (3), and Electrical System (2) — are concentrated rather than broadly scattered, and the data does not specify root causes for any of these categories. Two crash-related complaints appear for 2018, the only year in the dataset with crash complaints recorded, though fire complaints remain at zero. Taken in context, the 2018 model represents a mid-pack year: not as clean as 2017 or 2019-2020, but far from the problem-plagued launch years, and the absence of recalls is reassuring. For a buyer, this is an acceptable but not standout year — if price and condition are favorable it's reasonable to proceed, but a 2017 or 2019 model offers a statistically cleaner federal record at likely similar cost.

0
Open recalls
NHTSA campaigns
138
Service bulletins
Manufacturer communications
1
ODI investigations
Office of Defects Investigation
19
Owner complaints
2 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★★
Frontal★★★★
Side★★★★★
Rollover★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 19 complaints on record, top 8 components.

Fuel/Propulsion System5
Service Brakes3
Electrical System2
Fuel System, Gasoline,Engine1
Steering,Vehicle Speed Control,Fuel/Propulsion System1
Visibility/Wiper1
Unknown Or Other,Engine,Fuel/Propulsion System1
Steering1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.

Technical service bulletins NHTSA · verified

Showing 5 of 138 bulletins on record with NHTSA.

BulletinDateComponentSummary
L-SB-0057-22 Rev22026-02-02Electrical SystemOBSOLETE NOTICE February 2, 2026: This bulletin is now obsolete. Please see L-SB-0004-26.
L-SB-0004-262026-01-23Electrical SystemSome 2018 – 2025 model year Lexus vehicles equipped with the Enform™ 2.0 Navigation…
L-SB-0030-24 Rev22025-12-15StructureSome 2005 – 2026 Lexus vehicles that have undergone water intrusion may exhibit a…
L-TT-0326-23 Rev22025-08-19Electrical SystemSome customers may experience operational difficulties with some telematics features…
L-SB-0043-23 Rev12025-06-13Electrical SystemThe air conditioning dye injection tool kit has been developed to aid in identifying the…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific NX300H. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2018 NX300H take?

5.2 qt of 0W-20 STARBURST, per the factory manual.

Does the 2018 NX300H have open recalls?

NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the NX300H get?

EPA figures are 33 city / 30 highway / 31 combined mpg.