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FIAT 500X (2016–2026) — Technical Guide, Fault Codes & Maintenance
Built 2016–2026 · all production years covered on this single page
1.4L I4 Turbo • Gasoline
2026
© Wikimedia Commons CC BY-SA
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An independent value score for the Fiat 500X (2016–2026) — reliability, safety, cost, parts, upkeep and documentation. Owing nothing to the manufacturer.
Scorecard · each voice 0–10
Reliabilityn/a
Safety & recallsn/a
Repair costn/a
Parts & repairability8.1
Maintenance & durabilityn/a
Documentation & supportn/a
Independent · Verified · Never for sale
Every figure on this Fiat 500X (2016–2026) page is aggregated and cross-checked against more than 6.6 million real workshop operations, NHTSA records and OEM technical sources — and updated continuously. No invented estimates.
The Fiat 500X (2016–2026) is powered by a 1.4L I4 Turbo engine. Its OEM tyre size is 215/55 R16. Use the sections below for verified fluids, battery, OEM tyres, the maintenance schedule, recommended parts and the most commonly reported OBD2 fault codes for this vehicle.
Common problems
Common repairs
Fluids & lubricants
Battery
Fault codes (OBD2)
Dashboard lights
Parts comparator
Accessories & tools
Tyres
Recalls & TSB
Complaints
Workshops nearby
COMMON PROBLEMS
Transmission fault signal (TCM)MODERATE
The transmission module detected a fault — check separate transmission codes.
Related codes: P0700
Misfire / Loss of cylinderMODERATE
Rough running, idle vibration, power loss.
Related codes: P0300
Thermostat: coolant temperature lowLOW
Thermostat stuck open — engine does not reach operating temperature.
Related codes: P0128
Battery/system voltage lowLOW
System voltage below 10V — check alternator, battery or wiring.
Related codes: P0562
P0011LOW
Check with an OBD2 scanner.
Related codes: P0011
AVERAGE INDICATIVE COSTS
Prices may vary by area and workshop.
Full service
€ 120 – € 200
Full brake service
€ 180 – € 300
Spark plug replacement
€ 80 – € 140
Electronic diagnosis
€ 40 – € 70
WORKSHOP LABOUR RATES BY COUNTRY
Average independent-workshop hourly labour rates, to estimate repair costs in your country.
🇩🇪Germany€95/h
🇪🇸Spain€55/h
🇫🇷France€75/h
🇮🇹Italy€45/h
🇬🇧UK£80/h
🇺🇸USA$120/h
Reference rate
€45/h
Source: Eurostat 2024
💧 FLUIDS & LUBRICANTS
📋 RECALLS & TSB (15)
NHTSA R/2020/273
The Rear Right Brake Calliper Could Display Micro Cracks
Date: 20-11-2020
The rear right brake calliper could display micro-cracks
NHTSA 19V909000
Service Brakes, Hydraulic › Foundation Components › Disc › Caliper
Date: 19/12/2019
Chrysler (FCA US LLC) is recalling certain 2020 Jeep Renegade and Fiat 500X vehicles. The right rear brake caliper could have been fractured during the casting process.
NHTSA R/2019/161
Non-Conformity In The Air Bag Control Module Software
Date: 14-06-2019
Non-conformity in the airbag control module software
NHTSA 16V529000
Power Train › Automatic Transmission
Date: 12/07/2016
Chrysler (FCA US LLC) is recalling certain model year 2014-2015 Jeep Cherokee and 2015 Chrysler 200, Jeep Renegade, RAM ProMaster, and 2016 Fiat 500X vehicles equipped with 9-speed automatic transmissions. The transmission sensor clusters may have insufficient crimps in the tran…
NHTSA 19V287000
Air Bags › Air Bag/Restraint Control Module
Date: 10/04/2019
Chrysler (FCA US LLC) is recalling certain 2019 Jeep Renegade and Fiat 500X vehicles. Incorrect software may cause the occupant restraint controller (ORC) module to disable certain passive safety features.
NHTSA 18V524000
Electrical System › Wiring › Front Underhood
Date: 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 Wrangler, Dodge Grand Caravan and Chrysler Town and Country vehi…
NHTSA 17V146000
Tires › Pressure Monitoring And Regulating Systems
Date: 07/03/2017
Chrysler (FCA US LLC) is recalling certain 2017 Fiat 500X vehicles. When the vehicle has a tire with low tire pressure, the tire pressure monitoring system (TPMS) warning light may not illuminate. As such, these vehicles fail to comply with the requirements of Federal Motor Veh…
NHTSA R/2018/216
If Rear Seat Belts Are Not Fastened And Pretensioners Are Deployed The Latch Could Be Released
Date: 07-09-2018
In case of an accident if the rear seat belts are not fastened i.e. if the rear seat is not occupied by a passenger or is occupied by a child restraint system coupled only to the Isofix anchors and the pretensioners are deployed the rear seat latch could be released. The contents…
NHTSA R/2023/168
Date: 06-07-2023
Affected vehicles may have been fitted with a faulty 48-volt battery. This may lead to a loss of the functionality of the battery. This may result in a risk of thermal run away in the case of water infiltration.
NHTSA 24V510000
Air Bags › Frontal
Date: 03/07/2024
Chrysler (FCA US, LLC) is recalling certain 2017-2024 Alfa Romeo Giulia, 2018-2025 Alfa Romeo Stelvio, 2019-2023 Fiat 500X, Jeep Renegade, and 2024 Fiat 500E vehicles. A seat belt buckle switch sensor may be improperly connected, preventing the front seat air bag from deploying …
NHTSA 24V510000
Air Bags › Frontal
Date: 03/07/2024
Chrysler (FCA US, LLC) is recalling certain 2017-2024 Alfa Romeo Giulia, 2018-2025 Alfa Romeo Stelvio, 2019-2023 Fiat 500X, Jeep Renegade, and 2024 Fiat 500E vehicles. A seat belt buckle switch sensor may be improperly connected, preventing the front seat air bag from deploying …
NHTSA 24V510000
Air Bags › Frontal
Date: 03/07/2024
Chrysler (FCA US, LLC) is recalling certain 2017-2024 Alfa Romeo Giulia, 2018-2025 Alfa Romeo Stelvio, 2019-2023 Fiat 500X, Jeep Renegade, and 2024 Fiat 500E vehicles. A seat belt buckle switch sensor may be improperly connected, preventing the front seat air bag from deploying …
NHTSA 24V510000
Air Bags › Frontal
Date: 03/07/2024
Chrysler (FCA US, LLC) is recalling certain 2017-2024 Alfa Romeo Giulia, 2018-2025 Alfa Romeo Stelvio, 2019-2023 Fiat 500X, Jeep Renegade, and 2024 Fiat 500E vehicles. A seat belt buckle switch sensor may be improperly connected, preventing the front seat air bag from deploying …
NHTSA 24V510000
Air Bags › Frontal
Date: 03/07/2024
Chrysler (FCA US, LLC) is recalling certain 2017-2024 Alfa Romeo Giulia, 2018-2025 Alfa Romeo Stelvio, 2019-2023 Fiat 500X, Jeep Renegade, and 2024 Fiat 500E vehicles. A seat belt buckle switch sensor may be improperly connected, preventing the front seat air bag from deploying …
NHTSA R/2017/046
Loss Of Drive
Date: 03-03-2017
The transmission could unexpectedly switch to the N position due to a nonconformity in the transmission wiring assembly process.
COMMON OBD2 CODES TO CHECK
P0420
P0420
Powertrain
P0171
P0171
Powertrain
P0300
P0300
Powertrain
P0128
P0128
Powertrain
P0455
P0455
Powertrain
P0700
P0700
Transmission
P0442
P0442
Powertrain
P0172
P0172
Powertrain
P0401
P0401
Powertrain
All documented fault codes for this vehicle
The most documented diagnostic codes for this model, by system and severity. Tap a code for the full guide.
P0455
powertrain
LOW⏱ 0.62h avgP0442
powertrain
LOW⏱ 0.62h avgP0440
powertrain
LOW⏱ 0.78h avgP0420
powertrain
MEDIUM⏱ 1.24h avgP0300
powertrain
HIGH⏱ 1.22h avgP0172
powertrain
MEDIUM⏱ 1.13h avgP0171
powertrain
MEDIUM⏱ 0.95h avgP0730
transmission
MEDIUM⏱ 1.25h avgP0700
transmission
HIGH⏱ 1.25h avgP0401
powertrain
MEDIUM⏱ 1.25h avgP0011
powertrain
MEDIUM⏱ 5.4h avgU0100
network
HIGHP0562
electrical
MEDIUM⏱ 0.58h avgP0128
powertrain
MEDIUM⏱ 0.88h avg
DASHBOARD WARNING LIGHTS — UNIVERSAL GUIDE
56 warning lights classified by urgency. Appears on your vehicle? Check the urgency level.
Show all dashboard warning lights
🔴 IMMEDIATE STOP — pull over
Oil Pressure WarningEngine
Engine Temperature WarningCooling
Brake System WarningBrakes
Immobilizer / Key FaultSecurity
🟠 WARNING — check soon
Malfunction Indicator Light (MIL) / Check EngineEngine
Diesel Particulate Filter (DPF)Emissions
Battery / Charging SystemElectrical
Low Fuel WarningFuel
ABS WarningBrakes
Brake Pad Wear IndicatorBrakes
Electronic Parking Brake (EPB)Brakes
Power Steering WarningSteering
ESC / Stability Control FaultChassis
Tire Pressure Warning (TPMS)Chassis
Transmission Temperature WarningTransmission
Transmission / Gearbox FaultTransmission
Airbag / SRS WarningActive safety
EGR / Exhaust Gas Recirculation FaultEmissions
Catalytic Converter / Emissions FaultEmissions
AdBlue / DEF Level LowEmissions
Coolant Level LowCooling
Hybrid / EV System WarningHybrid
EV Charge System FaultHybrid
12V Battery (Hybrid/EV Auxiliary)Hybrid
Suspension Fault / Air SuspensionSuspension
CAN Bus / Network Communication FaultNetwork
Water in Fuel FilterFuel
Diesel Injector FaultFuel
Steering Angle Sensor FaultSteering
Turbo / Boost Pressure FaultEngine
Regenerative Braking Fault (Hybrid/EV)Hybrid
DPF Clogged (Fiat)Emissions
🟡 MONITOR
Fuel Cap / Evap SystemEmissions
4WD / AWD SystemDrivetrain
Bulb Failure WarningLighting
Headlight Range / Leveling FaultLighting
Service / Maintenance DueMaintenance
A/C System FaultHvac
Clutch Wear WarningTransmission
Cruise Control / ACC FaultADAS
🔵 INFORMATION
Engine Temperature Low (Blue)Cooling
Glow Plug / Diesel PreheatEngine
Traction Control / ESC OffChassis
Seatbelt ReminderActive safety
Rear Fog Light IndicatorLighting
Lane Departure / LDWS WarningADAS
Forward Collision Warning (FCW/AEB)ADAS
Blind Spot Monitor FaultADAS
Rear Parking Sensor / Camera FaultADAS
Windshield Washer Fluid LowMaintenance
Door Open WarningBody
Hood / Trunk Open WarningBody
Gear Shift Indicator (Manual)Transmission
Sport / Performance Mode ActiveTransmission
City Steering (Fiat)Chassis
Sport Mode (Fiat)Engine
REPORTED COMPLAINTS & PROBLEMS (NHTSA)
93 owner complaints filed with the U.S. National Highway Traffic Safety Administration (NHTSA) for the Fiat 500X across model years 2016–2026. These are real, verified reports submitted by vehicle owners.
3 crash reports 1 injury
Complaints by model year (most reported first)
Model year 201660
Model year 201715
Model year 201811
Model year 20193
Model year 20222
Model year 20202
Most reported components (all years)
Engine30
Electrical System28
Power Train26
Unknown Or Other21
Vehicle Speed Control6
Fuel/Propulsion System6
Sample reports
I purchased my 2018 Fiat 500X POP used in April 2023 with only 22k miles. This past weekend 12/16 when I would first start my car up and get ready to leave in the mornings after having been parked for the night, my car would start up no… (MY 2018)
For 2-3 days prior to incident, upon shifting up a gear and disengaging clutch, RPMs were higher than expected (noticeable revving sound when hitting gas pedal). Wednesday 12/08/21, the vehicle was not maintaining speed on the highway a… (MY 2016)
While driving, the vehicle will randomly shift to Neutral with a message appearing about shifting gears. When this happens I cannot accelerate or brake, and cannot shift gears. The only way to get the car to operate properly again is to… (MY 2016)
The contact owns a 2016 Fiat 500X. The contact stated that on two separate occasions, the vehicle stalled without warning. Upon investigation, the contact discovered NHTSA Campaign Number: 16V529000 (Power Train) which she linked to the… (MY 2016)
Source: NHTSA complaints database (U.S. data.gov). Figures cover production years 2016–2026.
Frequently Asked Questions
Does the Fiat 500x have any safety recalls?
Yes — 15 official NHTSA recall campaign(s) affect this model, mainly: AIR BAGS:FRONTAL, SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER. Check the recalls section for your exact year/VIN.
What does fault code P0300 mean on the Fiat 500x?
Random/Multiple Cylinder Misfire Detected This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0128 mean on the Fiat 500x?
Coolant temperature below thermostat regulating temperature — thermostat stuck open or faulty This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
What does fault code P0011 mean on the Fiat 500x?
A Camshaft Position Timing Over-Advanced or System Performance (Bank 1) This code is among the most documented for this model — tap it in the OBD2 section for the full step-by-step guide.
Are transmission problems common on the Fiat 500x?
Yes — 31 of 88 real owner reports filed with NHTSA mention the transmission. One owner reported: “I was driving vehicle and it all of a sudden get stuck in gear in either park gear or some other gear that wont allow me to turn engine off. Sometimes it just slow down to a stop and will not go into …” See the owner-reported complaints section below for more.
Are engine problems common on the Fiat 500x?
Yes — 32 of 88 real owner reports filed with NHTSA mention the engine. One owner reported: “I was driving vehicle and it all of a sudden get stuck in gear in either park gear or some other gear that wont allow me to turn engine off. Sometimes it just slow down to a stop and will not go into …” See the owner-reported complaints section below for more.
Are electrical problems common on the Fiat 500x?
Yes — 40 of 88 real owner reports filed with NHTSA mention the electrical. One owner reported: “The contact owns a 2016 Fiat 500X. The contact stated that while driving at an undisclosed speed, the transmission unintendedly shifted from drive(D) to neutral(N). The RPM became elevated; however, t…” See the owner-reported complaints section below for more.
What tyres does the Fiat 500X (2016–2026) use?
The original OEM tyre size for the Fiat 500X (2016–2026) is 215/55 R16. Compatible alternative sizes: ["225/45R18", "245/45R19", "215/60R16", "215/55R17"]. See the Tyres section on this page to compare offers from the main suppliers.
Which OBD2 fault codes are commonly documented for the Fiat 500X (2016–2026)?
Commonly documented OBD2 codes across many vehicles include: P0420, P0300, P0171. Find the full description, likely causes and estimated repair costs in the OBD2 Codes section on this page.
How often should the Fiat 500X (2016–2026) be serviced?
Routine maintenance for the Fiat 500X (2016–2026) typically includes an oil change every 6,000–9,000 miles (10,000–15,000 km), an air filter every 12,000–18,000 miles (20,000–30,000 km) and a brake inspection every 12,000 miles (20,000 km). Check the full plan with specific intervals in the Scheduled Maintenance section on this page.
Have a specific fault code on your Fiat 500X (2016–2026)? Search the code in the OBD2 section of this page or use the full TroubleAtlas DTC database. Need tyres? Compare prices and compatible sizes in the TroubleAtlas comparator.