InfinitiQX802018Overview/infiniti/qx80/2018/base/

2018 Infiniti QX80

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 QX80.

Body SUVTransmission Automatic (S7)

The 2018 Infiniti QX80 is a full‑size SUV built on Infiniti’s body‑on‑frame platform and equipped with an automatic S7 transmission, delivering EPA ratings of 14 mpg city, 20 mpg highway and a combined 16 mpg. While its overall owner‑complaint count sits at just eight, the most frequent issue reported is an electrical‑system fault and the model carries a single recall. Compared with the broader 2014‑2026 QX80 record—peaking at 20 complaints in 2014 and dropping to a low of one in 2022—the 2018 year occupies a middle ground, indicating a relatively stable but not flawless point in the model’s reliability trajectory.

Model year202620252024202320222021202020192018

Quick specs

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

Lug nut torque98 ft-lbsOEM · verified
EPA fuel economy14/20/16 mpgEPA · verified

Fitment & sizes

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

From the factory this vehicle uses OE oil filter 152089E01A. 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.

Tail / brake / turnBACKUPOEM · verified
Tire size275/60R20OEM · verified
Wheel / rim8.0 inOEM · verified

OE service part numbers OEM · verified

Engine oil filter152089E01A
Engine air filter165461LA0A
Spark plug224011LA1C
Front wiper blades288901LB1B alt 288901LB0D
Serpentine belt117201LA0B
Thermostat110625ZM0A alt 21250EZ31A
Cabin air filterB72771CA1B alt 27277VX01A

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S7)

Dimensions & weight NHTSA vPIC

Overall length210.2 in
Overall width79.9 in
Overall height76 in
Wheelbase121.3 in
Curb weight5889 lb
Track (front / rear)67.7 / 68.1 in
Weight distribution (front / rear)52/48

Ratings & economy EPA / vPIC

EPA city / highway / combined14 / 20 / 16 mpg
DrivetrainRear-Wheel Drive
Recommended fuelPremium Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

Independent road tests for the QX80 of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.

5.9–6.3 sec0–60 mph (tested)quickest 5.90 sec — 2018 5.6
YearTrim / engine0–60¼ mileHPDrivetrain
20185.6 5.6L V85.90 sec14.90 sec400 hpAWD
20185.6 5.6L V86.30 sec14.90 sec400 hpAWD
2016Limited 5.6L V86.20 sec15.10 sec400 hpAWD
2016Limited 5.6L V86.70 sec15.10 sec400 hpAWD
2015Limited 5.6L V86.30 sec14.90 sec400 hpAWD
2021Premium Select 5.6L V85.90 sec14.60 sec400 hpAWD
2021Sensory 5.6L V86.30 sec14.80 sec400 hpAWD

Service quick specs OEM factory data

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

Torque lug nuts to 98 ft-lbs. The firing order is 1-8-7-6-5-4-2. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Engine torques

Crankshaft Position (CKP) Sensor Bolt(s)5.1 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)5.1 ft-lbs
Camshaft Sprocket and/or Gear Bolt(s)76.0 ft-lbs
Engine Coolant Temperature (ECT) Sensor Bolt(s)5.1 ft-lbs
Oxygen (O2S) Sensor Bolt(s)22.0 ft-lbs
Engine Flywheel Bolts65.0 ft-lbs
Intake Manifold to Engine Bolts8 ft. lb.s
Exhaust Manifold to Cylinder Head Bolts21 ft-lbs

Chassis torques

Lug Nuts98 ft-lbs

Ignition

Cylinder Firing Order1-8-7-6-5-4-2
Spark Plug ManufacturerInfiniti
Spark Plug Gap.043-.049 in
Spark Plug Torque14 ft-lbs

Battery & A/C

RefrigerantR134a
Refrigerant Capacity2.32 lbs.
Oil GroupPAG
Oil Type46
Oil Capacity7.10 oz

Service checks

Fuel Pump Pressure Minimum65.0 psi
Regulated Fuel System Pressure (Without Vacuum)65.0 psi
RPM65.0 @ Idle rpm
Regulated Fuel System Pressure (Without Vacuum)65.0 psi
RPM65.0 @ Idle rpm
Engine Compression178-242 PSI. 14 Maximum variation PSI

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 53; Rear: 20
Brake Caliper Carrier to Hub Bolt TorqueFront: 122; Rear: 116
Vented Rotor Minimum Thickness after RefinishFront: 1.122; Rear: .709
Variation from Parallelism Thickness Variation.0006
Maximum Rotor RunoutFront: .0021; Rear: .0020

Multi-step torque procedures OEM · verified

Camshaft Bearing/Carrier Cap Bolts or Studs — tightening sequence 2 stages
112.0 inch lbs.; Step 2; 48.0 inch lbs.12 in
396.0 inch lbs.96 in
Connecting Rod (Large End) Bearings — tightening sequence 4 stages
122.0 ft. lbs.22 ft. lbs
2Back off 360.0 degrees360 degrees
315.0 ft. lbs.15 ft. lbs
490.0
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
1116.0 ft. lbs., Step 2: 90116 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
1151.0 ft. lbs., Step 2: 90151 ft. lbs
Cylinder Head — tightening sequence 6 stages
130 ft. lbs.30 ft. lbs
2Turn 75 degrees75 degrees
3Loosen all bolts in reverse order.
430 ft. lbs.30 ft. lbs
5Turn 90 degrees90 degrees
6Turn 90
Main Bearings — tightening sequence 4 stages
1Bolts 1-1029 ft. lbs
2Bolts 1-1040 degrees
3Bolts 11-2022 ft. lbs
430.0
Engine Valve Cover Bolts — tightening sequence 1 stages
11.5 ft. lbs., Step 2: 6.11.5 ft. lbs

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 5,000 mi; spark plugs at 105,000 mi; coolant at 105,000 mi. The big-interval services (at 105,000 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.

Every 5,000 miEngine Oil (drain & refill) · Engine Oil Filter (replace) · Tire & Wheel Assembly (rotate)
Every 10,000 miBrake Line (inspect) · Brake Linings (inspect) · Brake Rotor (inspect) · CV Joint Boot (inspect) · Differential (inspect fluid level) · Driveshaft (inspect)
Every 15,000 miCabin Air Filter (replace) · Keyless Entry Remote Battery (replace)
Every 20,000 miBrake Hydraulic System (drain, refill & bleed) · Drive Axle Assembly (inspect) · Exhaust System (Complete) (inspect) · Fuel Evaporative Emission Control System Lines (inspect) · Fuel Line (inspect) · Steering Gear Box Assembly (inspect)
Every 30,000 miEngine Air Filter Element (replace)
Every 40,000 miAccessory Drive Belt (inspect)
At 105,000 miEngine Coolant System (drain, flush & refill) · Spark Plugs (replace)
At 180,000 miEngine Coolant System (drain, flush & refill)

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 Infiniti QX80 sits at a favorable point in the generation’s reliability arc, with just 8 complaints—a sharp drop from the 14–20 range seen in 2014–2017 and well below the 19 recorded for 2019. Recalls remain moderate at 2, consistent with the generation’s typical 1–3, while TSBs continue a steady decline from a peak of 167 in 2015 to 123 in 2018, indicating that many early issues had been identified and addressed. The top complaint areas for 2018 are concentrated in the electrical system, though the data does not specify root causes. Overall, the 2018 model year represents a low-complaint, mid-cycle year with a maturing technical record, making it a relatively sound choice within this generation.

1
Open recalls
NHTSA campaigns
123
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
8
Owner complaints
1 involved a crash · 0 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Side★★★★★
Rollover★★★★★
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 8 complaints on record, top 7 components.

Electrical System2
Electrical System,Exterior Lighting1
Steering1
Unknown Or Other1
Electrical System,Communication1
Air Bags1
Air Bags,Seat Belts1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

19V654000Back Over Prevention: Sensing System: CameraReported 12/09/2019

Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel, Versa Note and… Remedy: Nissan will notify owners in phases, having dealers update the back-up camera settings software, free of charge. The recall began November 11, 2019 and all affected VINs should be…

Technical service bulletins NHTSA · verified

Showing 5 of 123 bulletins on record with NHTSA.

BulletinDateComponentSummary
ITB09-063C2026-04-13StructureCERTIFICATION LABEL AND VIN PLATE REPLACEMENT SERVICE INFORMATION Because of collision…
ITB12-011R2026-03-30Electrical SystemTELEMATICS SERVICE INFORMATION See ITB19-029 for models built after those listed above…
ITB23-023A2025-02-20Electrical SystemAEB WARNING LIGHT IS ON WITH WARNING MESSAGES DISPLAYED ON COMBINATION METER APPLIED…
ITB10-029C2024-05-20Electrical SystemCAN COMMUNICATION CODES – DIAGNOSTIC TIPS AND GUIDELINES This bulletin has been amended…
ITB13-052E2024-05-20Electrical SystemINTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended. See…

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 QX80. 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

Does the 2018 QX80 have open recalls?

NHTSA lists 1 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the QX80 get?

EPA figures are 14 city / 20 highway / 16 combined mpg.