Fiat500X20182.4L/fiat/500x/2018/2-4l/
FB platform

2018 Fiat 500X — 2.4L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 500X 2.4L. Covers both the standard and High Output 2.4L.

Body SUVEngine 2.4LTransmission Automatic 9-spd

The 2018 Fiat 500X is a small SUV built on the FB platform, powered by a 2.4L engine paired with an automatic 9-speed transmission and EPA-rated at 22/30/25 mpg city/highway/combined. In reliability terms, the 2018 model accumulated 11 owner complaints and one recall, with structure emerging as the top complaint area. Within the 2016–2023 model run, that complaint total sits well below the 2016 peak of 154 and closer to the quieter later years, marking the 2018 500X as one of the more settled entries in the lineup.

Model year2018201720162015

Quick specs

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

Lug nut torque89 ft-lbsOEM · verified
EPA fuel economy22/30/25 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 04892339BE. 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.

Tire size215/55R17OEM · verified
Wheel / rimNS inOEM · verified

OE service part numbers OEM · verified

Engine oil filter04892339BE alt 68098254AA
Engine air filter68247339AA
Spark plug68070507AC alt SP148183AC
BatteryBB0H6600AA
Front wiper blades68628200AA alt 68628203AA
Serpentine belt68201163AA alt 04861997AA
Thermostat5047264AB alt 5047861AD
Cabin air filter68535620AA alt 68212070AA

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 9-spd

Dimensions & weight NHTSA vPIC

Overall length167.7 in
Overall width70.9 in
Overall height63.4 in
Wheelbase101.2 in
Curb weight3278 lb
Track (front / rear)60.6 / 60.6 in
Weight distribution (front / rear)61/39

Ratings & economy EPA / vPIC

EPA city / highway / combined22 / 30 / 25 mpg
DrivetrainFront-Wheel Drive
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

Torque lug nuts to 89 ft-lbs, the oil drain plug to 20.0 ft-lbs. 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)4.4 ft-lbs
Camshaft Position (CMP) Sensor Bolt(s)6.6 ft-lbs
Camshaft Bearing/Carrier Cap Bolts or Studs15 ft-lbs
Engine Coolant Temperature (ECT) Sensor Bolt(s)15.0 ft-lbs
Oxygen (O2S) Sensor Bolt(s)33.0 ft-lbs
Knock Sense (KS) Bolt(s)18.0 ft-lbs
Intake Manifold to Engine Bolts11 ft-lbs
Engine Oil Pan Drain Plug20.0 ft-lbs

Chassis torques

Lug Nuts89 ft-lbs

Ignition

Spark Plug ManufacturerFiat
Spark Plug Gap.047 in
Spark Plug Torque20 ft-lbs

Battery & A/C

RefrigerantR1234yf
Refrigerant Capacity1.00 lbs.
Oil Capacity4.40 oz

Service checks

Engine Compression100 PSI.

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 20; Rear: 26
Brake Caliper Carrier to Hub Bolt TorqueFront: 122; Rear: 42
Vented Rotor Minimum Thickness for ReplacementFront: 1.098-; Rear: .469-
Maximum Rotor Runout.001

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
115 ft. lbs., Step 2: 4015 ft. lbs
Crankshaft Pulley and/or Damper Bolts — tightening sequence 1 stages
137.0 ft. lbs., Step 2: 6837 ft. lbs
Cylinder Head — tightening sequence 4 stages
115 ft. lbs.15 ft. lbs
222 ft. lbs.22 ft. lbs
3Turn 90 degrees do not use torque wrench90 degrees
4Turn 90 degrees do not use torque wrench.90 degrees
Exhaust Manifold to Cylinder Head Bolts — tightening sequence 2 stages
111 ft. lbs.11 ft. lbs
2Tighten an additional 30
Main Bearings — tightening sequence 5 stages

Prep Tighten according to the following torque values:

11 through 10 to 15 ft. lbs.15 ft. lbs
211 through 20 to 11 ft. lbs.11 ft. lbs
31 through 10 again to 15 ft. lbs.15 ft. lbs
41 through 10, 80 degrees Turn Do not use a torque wrench for this step.80 degrees
511 through 20 to 27 ft. lbs.27 ft. lbs
Oil Pan to Block Bolts — tightening sequence 1 stages
13.0 ft. lbs., Step 2: 6.63 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 10,000 mi; spark plugs every 100,000 mi; coolant every 10,000 mi. The big-interval services (every 10,000 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 10,000 miBody Latches, Locks & Hinges (lubricate) · Windshield Washer System (inspect) · Windshield Wiper Blade (inspect)
Every 10,000 miBattery (inspect) · Brake System (inspect) · Cabin Air Filter (replace) · Engine Coolant System (inspect fluid level) · Engine Coolant System Hoses (inspect) · Engine Oil (drain & refill)
Every 20,000 miAccessory Drive Belt (inspect) · Body Latches, Locks & Hinges (lubricate) · CV Joint Boot (inspect) · Parking Brake System (inspect) · Suspension System (inspect) · Tie Rod (inspect)
Every 30,000 miEngine Air Filter Element (replace)
Every 40,000 miDifferential (inspect fluid level) · Transfer Case Assembly (inspect fluid level)
Every 100,000 miPCV Valve (inspect) · Spark Plugs (replace)
At 150,000 miDrive Belt Tensioner (inspect) · Engine Coolant System (drain, flush & refill)

Owner how-tos

Condensed service procedures for routine maintenance. Procedures that require dealer diagnostic equipment are identified and summarized only.

Common procedures

Key fob — remote (RKE) programming programming new fob buttons Dealer tool OEM · verified
Tool requiredDRBIII scan tool (dealer / locksmith)
WhyTransmitter codes are written into the receiver in the passenger door module
Anti-theft (SKIS) — module initialization after immobilizer module replacement Dealer tool OEM · verified
When neededAfter Sentry Key Immobilizer Module (SKIM) replacement
Tool requiredDRBIII scan tool
Also requiredThe vehicle's four-digit PIN code

Reliability & federal safety record

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

In 2018 the Fiat 500X recorded 11 complaints, 1 recall, 0 investigations and 105 technical service bulletins, a marked drop from the 154 complaints and 229 TSBs in 2016 and the 15 complaints and 122 TSBs in 2017. The recall count remained steady at one from 2016 through 2018, while investigations stayed at zero across the entire period. Following 2018, complaints continued to decline to three in 2019, two in 2020, and zero in 2021 and 2023, with recalls fluctuating between one and two per year. TSBs fell consistently each year, from 229 in 2016 to 105 in 2018 and further down to 13 by 2023. Given its low complaint level and recall frequency comparable to surrounding years, the 2018 model year presents a relatively reliable option for a used purchase.

1
Open recalls
NHTSA campaigns
105
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
11
Owner complaints
0 involved a crash · 0 a fire
Owner complaints by model year NHTSA · this generation & adjacent

Owner complaints filed with NHTSA, by component

All 11 complaints on record, top 8 components.

Structure1
Power Train,Electrical System1
Power Train,Engine1
Power Train,Engine,Fuel/Propulsion System1
Engine1
Electrical System,Service Brakes,Engine1
Engine,Fuel/Propulsion System1
Electrical System,Engine1

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 1 of 1 campaigns on record for this vehicle.

18V524000Electrical System:Wiring:Front UnderhoodReported 09/08/2018

Chrysler (FCA US LLC) is recalling certain 2018 Jeep Renegade, Compass and Grand Cherokee, RAM 1500 and Promaster, Fiat 500x, Dodge Journey, Challenger, Charger and Durango and Chrysler 300x vehicles, 2017-2018 Jeep… Remedy: Chrysler will notify owners, and dealers will replace the powertrain control module, free of charge. The recall began October 2, 2018. Owners may contact Chrysler customer service…

Technical service bulletins NHTSA · verified

Showing 5 of 105 bulletins on record with NHTSA.

BulletinDateComponentSummary
S1408000384 REV.J2026-03-04Electrical SystemStart Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State…
S1408000384 REV.I2026-02-14Electrical SystemStart Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State…
21-040-252025-10-02Power Train948TE Transmission Reaction Shaft Service Bushing Kit Customers may experience a…
91006242025-07-08EngineVerify Reman part number availability. Order the "R" part number for all orders:
09-010-252025-04-30Engine"2.4L Excessive Oil Consumption XS1 Warranty Extension The customer may describe one or…

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 500X. 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 500X have open recalls?

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

What gas mileage does the 2.4L get?

EPA figures are 22 city / 30 highway / 25 combined mpg.