ToyotaiA2018Overview/toyota/ia/2018/base/

2018 Toyota iA

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

Body PASSENGER CARTransmission Automatic (S6)

The 2018 Toyota iA is an efficient passenger car that pairs a six-speed automatic transmission with an EPA-rated fuel economy of 32/40/35 mpg. Its powertrain is designed for low-friction operation, requiring 4.1 quarts of 0W-20 viscosity engine oil for routine maintenance. From a reliability standpoint, this model year sits at a high point in the vehicle's history, showing zero recalls and only seven total owner complaints, with tires being the top noted issue. This exceptionally clean track record means the 2018 iA stands as a remarkably dependable and trouble-free entry in the compact segment.

Model year20182017

Quick specs

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

Engine oil capacity4.1 qtOEM · verified
Engine oil type0W-20OEM · verified
Lug nut torque108 ft-lbsOEM · verified
EPA fuel economy32/40/35 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 90118WBA40. 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 sizeP185/65R15, P185/60R16OEM · verified

OE service part numbers OEM · verified

Engine oil filter90118WBA40
Engine air filter17801WB001
Fuel filter77024WB001 alt 23217WB001
Spark plug90118WBC16
Front wiper blades85212WB001 alt 85212WB002
Serpentine belt90118WB464 alt 90118WBA55
Thermostat90118WB459
Cabin air filter87139WB001

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic (S6)

Dimensions & weight NHTSA vPIC

Overall length205.1 in
Overall width79.9 in
Overall height77.2 in
Wheelbase122 in
Curb weight5968 lb
Track (front / rear)68.1 / 69.3 in
Weight distribution (front / rear)51/49

Ratings & economy EPA / vPIC

EPA city / highway / combined32 / 40 / 35 mpg
DrivetrainFront-Wheel Drive
Passenger volume86 cu ft
Cargo volume13 cu ft
Recommended fuelRegular Gasoline

Service quick specs OEM factory data

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

This engine holds 4.1 qt of 0W-20 engine oil, DOT 3 brake fluid. Torque lug nuts to 108 ft-lbs. The firing order is 1-3-4-2.

Lubricants & capacities

Automatic Transmission FluidATF
Automatic Transmission Fluid Capacity3.2
Brake FluidDOT 3
Clutch FluidDOT 3
Engine CoolantToyota FL22 coolant
Engine Coolant Capacity5.7-5.9
Engine Oil0W-20
Engine Oil Capacity4.1 qt

Engine torques

Crankshaft Pulley and/or Damper Bolts95.0 ft-lbs
Intake Manifold to Engine Bolts22 ft-lbs
Exhaust Manifold to Cylinder Head Bolts20 ft-lbs

Chassis torques

Lug Nuts108 ft-lbs
Front Wheel Hub160.0 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Curb Idle Speed (No Load)700 rpm
Curb Idle Speed Variance (No Load)50 rpm
Curb Idle Speed (No Load)700 rpm
Curb Idle Speed Variance (No Load)50 rpm
Curb Idle Speed (No Load)600 rpm
Curb Idle Speed Variance (No Load)50 rpm
Spark Plug ManufacturerTOYOTA

Battery & A/C

RefrigerantR134a
Refrigerant Capacity0.87-0.98 lbs
Oil GroupPAG
Oil Type100
Oil Capacity3.72 oz

Service checks

Fuel Pump Pressure Minimum44.0 psi
Fuel Pump Pressure Maximum50.0 psi
RPM44.0-50.0 @ Idle rpm
Residual Pressure21.0.
Engine Compression145

Brakes

Brake Caliper Bolt to Carrier TorqueFront: 20
Brake Caliper Carrier to Hub Bolt TorqueFront: 67
Vented Rotor Minimum Thickness for ReplacementFront: .787
Vented Rotor Minimum Thickness after RefinishFront: .819
Variation from Parallelism Thickness Variation.0006
Maximum Rotor RunoutFront: .002
Maximum Drum DiameterParking Brake: 7.933

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 75,000 mi; coolant at 120,000 mi. The big-interval services (at 120,000 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 7,500 miBrake System (inspect) · Engine Oil (drain & refill) · Engine Oil Filter (replace) · Floor Mat (inspect) · Tire & Wheel Assembly (rotate) · Universal Vehicle Operation (inspect all fluid levels)
At 15,000 miCabin Air Filter (inspect)
Every 15,000 miAir Conditioning Condenser (inspect) · Brake Drum Assembly (inspect) · Brake Linings (inspect) · Brake Rotor (inspect) · Engine Coolant System (inspect fluid level) · Exhaust System (Complete) (inspect)
Every 30,000 miBody Fasteners (torque) · Brake Line (inspect) · CV Joint Boot (inspect) · Cabin Air Filter (inspect) · Cabin Air Filter (replace) · Fuel Evaporative Emission Control System Lines (inspect)
Every 37,500 miAccessory Drive Belt (inspect) · Engine Air Filter Element (replace)
Every 60,000 miEmission Control System (inspect)
At 75,000 miAccessory Drive Belt (inspect)
Every 75,000 miSpark Plugs (replace)
At 120,000 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.

Owner complaints about the 2018 Toyota iA lead in one area — the tires, 2 of 7 reports (29%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 1 of the reports describe a crash and 1 a fire — a small share of the total, but worth weighing against the tires pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.

0
Open recalls
NHTSA campaigns
34
Service bulletins
Manufacturer communications
0
ODI investigations
Office of Defects Investigation
7
Owner complaints
1 involved a crash · 1 a fire
NHTSA crash-test rating federal NCAP · out of 5 stars
Overall★★★★★
Frontal★★★★★
Side★★★★★
Rollover★★★★

Owner complaints filed with NHTSA, by component

All 7 complaints on record, top 6 components.

Tires2
Unknown Or Other1
Electrical System,Engine1
Service Brakes1
Air Bags,Seat Belts,Unknown Or Other1
Vehicle Speed Control1

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 34 bulletins on record with NHTSA.

BulletinDateComponentSummary
T-PANT-2024-004-2024-03-04Engine And Engine CoolingThis is to advise of various price adjustments that will affect Toyota Genuine Motor Oil…
TSB0058232023-08-21VisibilityTSB: The air conditioning dye injection tool kit has been developed to aid in identifying…
TTT0737232023-08-17Unknown Or OtherTT: A very small percentage of customers experience operational difficulties with some…
TSB0032202023-08-17Air BagsTSB: Replacement certification labels (the vinyl label installed on the driver door or…
T-SB-0057-182023-05-30EquipmentTSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new…

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 iA. 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 iA take?

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

Does the 2018 iA have open recalls?

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

What gas mileage does the iA get?

EPA figures are 32 city / 40 highway / 35 combined mpg.