Fiat500X20181.4L/fiat/500x/2018/1-4l/
FB platform

2018 Fiat 500X — 1.4L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2018 500X 1.4L.

Body SUVEngine 1.4LTransmission Manual 6-spd

The 2018 Fiat 500X is a compact SUV built on the FB platform and powered by a 1.4‑liter engine paired with a six‑speed manual transmission. It returns EPA‑rated fuel economy of 25/33/28 mpg and, according to owner data, logged only 11 total complaints with the most frequent issues concerning structure and a single recall. Placed within the 2016‑2023 complaint timeline, the 2018 model’s figure sits well below the 2016 peak of 154 complaints and close to the 2020 low of just two, indicating a markedly improved reliability stage for the nameplate.

Model year201820172016

Quick specs

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

Lug nut torque89 ft-lbsOEM · verified
EPA fuel economy25/33/28 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

TransmissionManual 6-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 / combined25 / 33 / 28 mpg
DrivetrainFront-Wheel Drive
Recommended fuelPremium 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. 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
Crankshaft Pulley and/or Damper Bolts19.0 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

Chassis torques

Lug Nuts89 ft-lbs

Ignition

Spark Plug ManufacturerFiat
Spark Plug Gap.026 in
Spark Plug Torque13 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: 1.020-; 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
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) · Timing Belt (replace)

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 model recorded 11 complaints, which is lower than the 15 complaints logged in 2017 but higher than the 3 complaints recorded in 2019. Recalls remained steady at one in 2018, matching the 2017 figure and aligning with the one‑or‑two‑recall pattern seen from 2020 through 2023. The overall trend across the generation shows a steep decline in complaint volume, falling from 154 in 2016 to single‑digit levels by 2019 and remaining near zero thereafter. The 2018 complaint categories each appeared only once, and no crash or fire complaints were reported for that year. Because the complaint count is low, investigations are absent, and fire or crash complaints are absent, the data suggests that 2018 is a relatively safe year to consider, though a thorough service history check is advisable.

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 1.4L get?

EPA figures are 25 city / 33 highway / 28 combined mpg.